Accumulated Other Comprehensive Income - Changes in Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (287)
Other comprehensive income (loss) before reclassifications, net of tax	56	(273)	294
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax	81
Other comprehensive income (loss)	137	(273)	294
Ending Balance	(150)	(287)
Unrealized Gains and (Losses) on Securities Available-for-Sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(287)	(14)
Other comprehensive income (loss) before reclassifications, net of tax	56	(273)
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax
Amounts reclassified from accumulated other comprehensive income
Other comprehensive income (loss)	56	(273)
Ending Balance	(231)	(287)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance
Other comprehensive income (loss) before reclassifications, net of tax
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax	81
Amounts reclassified from accumulated other comprehensive income
Other comprehensive income (loss)	81
Ending Balance	$ 81