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Other Comprehensive Income - Summary of Other Comprehensive Income (Loss) and Tax Impact (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Amounts Reclassified Out Of Accumulated Other Comprehensive Income Loss [Abstract] |  |  |  |
Unrealized (loss) gain on available for sale securities, income tax expenses (benefit) | $ (144) | $ (13) | $ (118) | $ 80
Unrealized gain (loss) on interest rate swaps, income tax expense (benefit) | $ 45 | $ (29) | $ 84 | $ (55)

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- Details
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- Definition Other comprehensive income unrealized gain loss on derivatives during period tax. + References No definition available. + Details
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- Definition Other comprehensive income unrealized holding gain loss on securities during period tax. + References No definition available. + Details
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