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Pre - Tax Income (Loss) (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Schedule of Income Before Income Tax [Line Items]      
Domestic $ 6,820us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ (20,863)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic $ 13,315us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Foreign 5,942us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 6,075us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 9,767us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
Income (Loss) Before Provision (Benefit) for Income Taxes $ 12,762us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments $ (14,788)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments $ 23,082us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments