Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v2.4.1.9
Income Taxes - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Income Tax Disclosure [Abstract]    
Income tax benefit (expense) $ 285us-gaap_IncomeTaxExpenseBenefit $ (349)us-gaap_IncomeTaxExpenseBenefit
Effective income tax rate 40.80%us-gaap_EffectiveIncomeTaxRateContinuingOperations 37.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations