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Accumulated Other Comprehensive Income - Changes in Accumulated Other Comprehensive Income (Parenthetical) (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||
| Other comprehensive income (loss) before reclassifications, tax | $ 57 | $ 64 | $ 178 | $ 23 |
| Other comprehensive income (loss) before reclassifications, tax | 11 | 11 | ||
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Unrealized Gains and (Losses) on Securities Available-for-Sale [Member]
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| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||
| Other comprehensive income (loss) before reclassifications, tax | 178 | 23 | ||
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Unrealized Gains and (Losses) on Foreign Currency Translation [Member]
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| Accumulated Other Comprehensive Income (Loss) [Line Items] | ||||
| Other comprehensive income (loss) before reclassifications, tax | $ 11 | |||