Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ (242)
Other comprehensive income (loss) before reclassifications, net of tax	$ (103)	$ 122	(99)	$ 185
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax	(49)	(11)	(320)	13
Other comprehensive (loss) income	(152)	111	(419)	198
Ending Balance	(661)		(661)
Unrealized Gains and (Losses) on Securities Available-for-Sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(107)	(231)
Other comprehensive income (loss) before reclassifications, net of tax			(99)	185
Amounts reclassified from accumulated other comprehensive income			0	0
Other comprehensive (loss) income			(99)	185
Ending Balance	(206)	(46)	(206)	(46)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(135)	81
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax			(320)	13
Amounts reclassified from accumulated other comprehensive income			0	0
Other comprehensive (loss) income			(320)	13
Ending Balance	$ (455)	$ 94	$ (455)	$ 94