Accumulated Other Comprehensive Income - Changes in Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (150)
Other comprehensive income (loss) before reclassifications, net of tax	63	233
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax	24
Other comprehensive income	87	233
Ending Balance	(63)
Unrealized Gains and (Losses) on Securities Available-for-Sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(231)	(287)
Other comprehensive income (loss) before reclassifications, net of tax	63	233
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax	0
Amounts reclassified from accumulated other comprehensive income	0
Other comprehensive income	63	233
Ending Balance	(168)	(54)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	81
Other comprehensive income (loss) before reclassifications, net of tax	0
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax	24
Amounts reclassified from accumulated other comprehensive income	0
Other comprehensive income	24
Ending Balance	$ 105