Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

v2.4.1.9
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)
In Thousands, unless otherwise specified
Total
Class A Shares held in Treasury [Member]
Paid-in Capital [Member]
Retained Earnings [Member]
Noncontrolling Interest [Member]
Common Stock - Class A [Member]
Common Stock - Class B [Member]
Beginning balances, total stockholders' equity at Dec. 31, 2013 $ 457,354us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest $ (866)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
$ 26,880us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ 116,990us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ 300,210us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
$ 11,467us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 2,673us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 10,761us-gaap_ProfitLoss     1,140us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
9,621us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
   
Common stock repurchases and retirements (529)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue         (529)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
Shares issued under stock option plan 157us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised         157us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
Issuance of restricted stock awards 0us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures   (915)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
    915us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
Share-based compensation expense 1,772us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   1,772us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
       
Issuance of treasury shares related to deferred compensation payment 715us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued 617us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
98us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
       
Distribution to non-controlling interest (12,500)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders       (12,500)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
   
Other 100us-gaap_StockholdersEquityOther       100us-gaap_StockholdersEquityOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
2us-gaap_StockholdersEquityOther
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
(2)us-gaap_StockholdersEquityOther
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
Ending balances, total stockholders' equity at Mar. 31, 2014 457,830us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest (249)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
27,835us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
118,130us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
297,431us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
12,012us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
2,671us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
Beginning balances, total stockholders' equity at Dec. 31, 2014 467,222us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest (249)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
26,773us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
124,547us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
299,866us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
13,617us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
2,668us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income (18,725)us-gaap_ProfitLoss     (19,269)us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
544us-gaap_ProfitLoss
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
   
Common stock repurchases and retirements (16,993)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue     (115)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
  (16,878)us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
Shares issued under stock option plan 295us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised         295us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
Issuance of restricted stock awards     (2,965)us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
    2,965us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
 
Share-based compensation expense 2,749us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue   2,749us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
       
Investment by non-controlling interest 3,209gncma_NoncontrollingInterestIncreasefromInvestment       3,209gncma_NoncontrollingInterestIncreasefromInvestment
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
   
AWN non-controlling interest acquisition (303,831)us-gaap_MinorityInterestDecreaseFromRedemptions   (35,467)us-gaap_MinorityInterestDecreaseFromRedemptions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
  (268,364)us-gaap_MinorityInterestDecreaseFromRedemptions
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
   
Distribution to non-controlling interest (765)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders       (765)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
   
Other (230)us-gaap_StockholdersEquityOther   (230)us-gaap_StockholdersEquityOther
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
    1us-gaap_StockholdersEquityOther
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
(1)us-gaap_StockholdersEquityOther
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember
Ending balances, total stockholders' equity at Mar. 31, 2015 $ 132,931us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest $ (249)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_TreasuryStockMember
$ (9,140)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ 105,163us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
$ 34,490us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_NoncontrollingInterestMember
$ 0us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
$ 2,667us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassBMember