Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of the total amounts of unrecognized tax benefits (Detail)

v2.4.1.9
Income Taxes - Reconciliation of the total amounts of unrecognized tax benefits (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Income Tax Disclosure [Abstract]  
Unrecognized tax benefits, beginning of year $ 10,894us-gaap_UnrecognizedTaxBenefits
Gross increases in tax positions in current period 280us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Unrecognized tax benefits, end of year $ 11,174us-gaap_UnrecognizedTaxBenefits