Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Details)

v3.6.0.2
Stock-Based Compensation (Details) - USD ($)
5 Months Ended 7 Months Ended 12 Months Ended 24 Months Ended
Dec. 31, 2016
Dec. 31, 2016
Jul. 29, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Nov. 03, 2014
Awards                
Stock Based Compensation                
Number of awards outstanding (in shares)               0
Restricted Stock                
Stock Based Compensation                
Fair value of shares vested       $ 674,000 $ 5,800,000 $ 172,000    
Number of awards outstanding unvested (in shares) 27,000 27,000   27,000        
Weighted average grant date fair value awards outstanding unvested (in dollars per share) $ 15.30 $ 15.30   $ 15.30        
2014 Plan | Awards                
Fair value assumptions                
Dividend rate             0.00%  
2014 Plan | Minimum | Awards                
Stock Based Compensation                
Vesting period       4 years        
Term of awards       7 years        
Fair value assumptions                
Expected term             4 years 7 months 6 days  
Volatility rate             26.20%  
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%  
LTIPs | PARs and PSUs | Significant other observable inputs (Level 2) | Other liabilities                
Stock Based Compensation                
Deferred compensation $ 1,700,000 $ 1,700,000   $ 1,700,000 $ 2,000,000   $ 2,000,000  
LTIPs | TruePosition | PARs                
PAR and PSU activity                
Outstanding, beginning balance (in shares)   705,000 894,000 894,000        
Grants (in shares)   4,147,000            
Exercises (in shares)   (56,000) (185,000)          
Forfeitures (in shares)   (154,000) (4,000)          
Conversions and adjustments (in shares)   6,070,000            
Outstanding, ending balance (in shares) 10,712,000 10,712,000 705,000 10,712,000 894,000   894,000  
Fair value of outstanding grants $ 911,000 $ 911,000   $ 911,000        
Vested fair value $ 415,000              
LTIPs | TruePosition | PSUs                
PAR and PSU activity                
Outstanding, beginning balance (in shares)   122,000 160,000 160,000        
Exercises (in shares)     (38,000)          
Conversions and adjustments (in shares)   413,000            
Outstanding, ending balance (in shares) 535,000 535,000 122,000 535,000 160,000   160,000  
Fair value of outstanding grants $ 1,588,000 $ 1,588,000   $ 1,588,000        
Vested fair value $ 1,084,000              
LTIPs | Skyhook | PARs and PSUs                
Stock Based Compensation                
Distribution ratio considered to determine exercise price and number of shares (as a percent)       25.00%        
Fair value assumptions                
Volatility rate         30.00%      
Dividend rate         0.00%      
Risk free interest rate, minimum         0.60%      
Risk free interest rate, maximum         2.30%      
LTIPs | Skyhook | PARs                
PAR and PSU activity                
Outstanding, beginning balance (in shares)   3,677,000 7,061,000 7,061,000        
Exercises (in shares)     (1,552,000)          
Forfeitures (in shares)     (1,832,000)          
Conversions and adjustments (in shares)   (3,677,000)            
Outstanding, ending balance (in shares)     3,677,000   7,061,000   7,061,000  
Weighted average remaining vesting period       2 years 6 months        
LTIPs | Skyhook | PSUs                
PAR and PSU activity                
Weighted average remaining vesting period       2 years 1 month 6 days        
LTIPs | Skyhook | Minimum | PARs and PSUs                
Stock Based Compensation                
Vesting period       4 years        
Fair value assumptions                
Expected term         6 months      
LTIPs | Skyhook | Maximum | PARs and PSUs                
Stock Based Compensation                
Vesting period       5 years        
Fair value assumptions                
Expected term         7 years 6 months