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Stockholders' Equity and Stock-Based Compensation - Summary of Restricted Stock Units Relating to 2013 Incentive Plan (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
0 Months Ended 6 Months Ended
Apr. 07, 2014
Jun. 30, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]    
Nonvested Restricted Stock Units, Beginning Balance   145,517
Nonvested Restricted Stock Units, Granted 217,839 217,839
Nonvested Restricted Stock Units, Vested   (51,598)
Nonvested Restricted Stock Units, Forfeited   (1,566)
Nonvested Restricted Stock Units, Ending Balance   310,192
Weighted Average Grant Date Fair Value, Beginning Balance   $ 17.68
Weighted Average Grant Date Fair Value, Granted $ 16.17 $ 16.17
Weighted Average Grant Date Fair Value, Vested   $ 17.81
Weighted Average Grant Date Fair Value, Forfeited   $ 18.30
Weighted Average Grant Date Fair Value, Ending Balance   $ 16.60
Aggregate Intrinsic Value, Beginning Balance   $ 2,900
Aggregate Intrinsic Value, Granted   3,424
Aggregate Intrinsic Value, Vested     
Aggregate Intrinsic Value, Forfeited   25
Aggregate Intrinsic Value, Ending Balance   $ 4,876