v2.4.1.9
CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (USD $)
In Thousands, except Share data, unless otherwise specified
Total
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive (Loss) Income
Retained Earnings
Balance at Dec. 31, 2014 $ 947,285us-gaap_StockholdersEquity $ 76us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
$ 576,186us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
$ (28)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
$ 371,051us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
Balance (in shares) at Dec. 31, 2014   75,536,741us-gaap_SharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Increase (Decrease) in Stockholders' Equity          
Unrealized gain on investments available for sale, net of tax 10us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax     10us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
 
Stock-based compensation 1,062us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation   1,062us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Vesting of restricted common stock, net of restricted common stock used to fund employee income tax withholding due upon vesting (in shares)   135,346us-gaap_RestrictedStockSharesIssuedNetOfSharesForTaxWithholdings
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
     
Vesting of restricted common stock, net of restricted common stock used to fund employee income tax withholding due upon vesting (1,037)us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings 0us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
(1,037)us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
   
Balance at Mar. 31, 2015 953,849us-gaap_StockholdersEquity 76us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
576,211us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AdditionalPaidInCapitalMember
(18)us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_AccumulatedOtherComprehensiveIncomeMember
377,580us-gaap_StockholdersEquity
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
Net income at Mar. 31, 2015 $ 6,529us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic       $ 6,529us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_RetainedEarningsMember
Balance (in shares) at Mar. 31, 2015   75,672,087us-gaap_SharesIssued
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember