Annual report pursuant to Section 13 and 15(d)

Tax Effects allocated to Accumulated Other Comprehensive Income (Loss) Components (Detail)

v2.4.1.9
Tax Effects allocated to Accumulated Other Comprehensive Income (Loss) Components (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Schedule of Other Comprehensive Income (Loss) [Line Items]      
Before-tax amount $ (268)us-gaap_OtherComprehensiveIncomeLossBeforeTax $ (262)us-gaap_OtherComprehensiveIncomeLossBeforeTax $ 14us-gaap_OtherComprehensiveIncomeLossBeforeTax
Tax expense (benefit) (89)us-gaap_OtherComprehensiveIncomeLossTax (86)us-gaap_OtherComprehensiveIncomeLossTax 4us-gaap_OtherComprehensiveIncomeLossTax
Net-of-tax amount $ (179)us-gaap_OtherComprehensiveIncomeLossNetOfTax $ (176)us-gaap_OtherComprehensiveIncomeLossNetOfTax $ 10us-gaap_OtherComprehensiveIncomeLossNetOfTax