Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Details 2)

v2.4.1.9
Stock-Based Compensation (Details 2) (USD $)
 12 Months Ended 1 Months Ended
Dec. 31, 2014
Oct. 31, 1995
Nov. 03, 2014
Dec. 31, 2013
Awards        
Stock Based Compensation        
Number of awards outstanding (in shares)     0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember 		 
2014 Plan | Awards        
Fair value assumptions        
Dividend rate 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member 		     
2014 Plan | Options        
Stock Based Compensation        
Distribution ratio considered to determine exercise price and number of shares (as a percent) 0.25%lbrda_ShareBasedCompensationArrangementByShareBasedPaymentAwardDividendRatioConsideredToDetermineExercisePriceAndNumberOfShares
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member 		     
2014 Plan | Restricted Stock        
Stock Based Compensation        
Fair value of shares vested 172,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member 		     
Number of awards outstanding unvested (in shares) 201,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member 		     
Weighted average grant date fair value awards outstanding unvested (in dollars per share) 28.61us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member 		     
2014 Plan | Minimum | Awards        
Stock Based Compensation        
Vesting period 4 years      
Term of awards 7 years      
Fair value assumptions        
Expected term 5 years 1 month 6 days      
Volatility rate 28.20%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember 		     
2014 Plan | Maximum | Awards        
Stock Based Compensation        
Vesting period 5 years      
Term of awards 10 years      
Fair value assumptions        
Expected term 7 years 3 months 18 days      
Volatility rate 28.50%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= lbrda_EmployeeStockOptionsAndStockAppreciationRightsSARSMember
/ us-gaap_PlanNameAxis
= lbrda_OmnibusIncentivePlan2014Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember 		     
LTIPs | PARs and PSUs | Level 2 | Other liabilities        
Stock Based Compensation        
Deferred compensation       2,200,000us-gaap_DeferredCompensationSharebasedArrangementsLiabilityClassifiedNoncurrent
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsAndPhantomStockUnitsMember
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember
LTIPs | TruePosition | PARs and PSUs        
Stock Based Compensation        
Distribution ratio considered to determine exercise price and number of shares (as a percent) 25.00%lbrda_ShareBasedCompensationArrangementByShareBasedPaymentAwardDividendRatioConsideredToDetermineExercisePriceAndNumberOfShares
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsAndPhantomStockUnitsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Fair value assumptions        
Volatility rate 30.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsAndPhantomStockUnitsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Dividend rate 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsAndPhantomStockUnitsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Risk free interest rate, minimum 0.10%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsAndPhantomStockUnitsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Risk free interest rate, maximum 2.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsAndPhantomStockUnitsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
LTIPs | TruePosition | PARs        
PAR and PSU activity        
Outstanding, beginning balance (in shares) 1,311,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Grants (in shares) 553,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Exercises (in shares) (325,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Forfeitures (in shares) (463,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Outstanding, ending balance (in shares) 1,076,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Weighted average remaining vesting period 2 years 8 months 12 days      
LTIPs | TruePosition | Tandem PARs        
PAR and PSU activity        
Outstanding, beginning balance (in shares) 253,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsTandemMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Exercises (in shares) (122,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsTandemMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Forfeitures (in shares) (80,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsTandemMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Outstanding, ending balance (in shares) 51,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsTandemMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
LTIPs | TruePosition | Tandem PSUs        
PAR and PSU activity        
Outstanding, beginning balance (in shares) 69,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockUnitsTandemMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Exercises (in shares) (33,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockUnitsTandemMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Forfeitures (in shares) (21,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockUnitsTandemMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Outstanding, ending balance (in shares) 15,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockUnitsTandemMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Fair value of outstanding grants 203,000lbrda_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingTotalFairValue
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockUnitsTandemMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Vested fair value 203,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockUnitsTandemMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
LTIPs | TruePosition | PSUs        
PAR and PSU activity        
Outstanding, beginning balance (in shares) 218,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockUnitsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Grants (in shares) 44,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockUnitsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Exercises (in shares) (8,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockUnitsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Forfeitures (in shares) (93,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockUnitsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Outstanding, ending balance (in shares) 161,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockUnitsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Fair value of outstanding grants 2,135,000lbrda_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingTotalFairValue
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockUnitsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Vested fair value 945,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockUnitsMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Weighted average remaining vesting period 2 years 10 months 24 days      
LTIPs | TruePosition | Minimum | PARs and PSUs        
Stock Based Compensation        
Vesting period 4 years      
Fair value assumptions        
Expected term 6 months      
LTIPs | TruePosition | Maximum | PARs and PSUs        
Stock Based Compensation        
Vesting period 5 years      
Fair value assumptions        
Expected term 7 years 6 months      
LTIPs | Skyhook | PARs        
PAR and PSU activity        
Grants (in shares) 6,260,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsMember
/ dei_LegalEntityAxis
= lbrda_SkyhookWirelessIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Forfeitures (in shares) (2,272,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsMember
/ dei_LegalEntityAxis
= lbrda_SkyhookWirelessIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Outstanding, ending balance (in shares) 3,988,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsMember
/ dei_LegalEntityAxis
= lbrda_SkyhookWirelessIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Fair value of outstanding grants 67,000lbrda_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingTotalFairValue
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsMember
/ dei_LegalEntityAxis
= lbrda_SkyhookWirelessIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Vested fair value 10,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
/ us-gaap_AwardTypeAxis
= lbrda_PhantomStockAppreciationRightsMember
/ dei_LegalEntityAxis
= lbrda_SkyhookWirelessIncMember
/ us-gaap_PlanNameAxis
= lbrda_LongTermIncentivePlansMember 		     
Weighted average remaining vesting period 3 years 4 months 24 days      
SIP | TruePosition | Options        
Stock Based Compensation        
Term of awards   10 years    
Number of awards outstanding (in shares) 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_StockIncentivePlanMember 		    0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
/ dei_LegalEntityAxis
= lbrda_TruePositionIncMember
/ us-gaap_PlanNameAxis
= lbrda_StockIncentivePlanMember
SIP | TruePosition | Minimum | Options        
Stock Based Compensation        
Vesting period   4 years    
SIP | TruePosition | Maximum | Options        
Stock Based Compensation        
Vesting period   5 years