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Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (loss) Pre-Tax and After-Tax (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]
Net unrealized gains (losses) on investments available for sale arising during the year, Pre-tax	$ 685
Amounts reclassified from accumulated other comprehensive income (loss), Pre-tax	(1,297)
Net current period other comprehensive income (loss), Pre-tax	(612)
Net unrealized gains (losses) on investments available for sale arising during the year, Tax	264
Amounts reclassified from accumulated other comprehensive income (loss), Tax	(500)
Net current period other comprehensive income (loss), Tax	(236)
Net unrealized gains (losses) on investments available for sale arising during the year, After-tax	421
Amounts reclassified from accumulated other comprehensive income (loss), After-tax	(797)
Net current period other comprehensive income (loss), After-tax	$ (376)

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