Accumulated Other Comprehensive Income - Changes in Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ (150)
Other comprehensive income (loss) before reclassifications, net of tax	122	(94)	185	139
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax	(11)	(18)	13	(18)
Other comprehensive income (loss)	111	(112)	198	121
Ending Balance	48		48
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			185	139
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax			0	0
Amounts reclassified from accumulated other comprehensive income			0	0
Other comprehensive income (loss)			185	139
Ending Balance	(46)	(148)	(46)	(148)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			81	0
Other comprehensive income (loss) before reclassifications, net of tax			0	0
Other comprehensive income (loss) before reclassifications, foreign currency translation adjustments, net of tax			13	(18)
Amounts reclassified from accumulated other comprehensive income			0	0
Other comprehensive income (loss)			13	(18)
Ending Balance	$ 94	$ (18)	$ 94	$ (18)