Accumulated Other Comprehensive Income (Loss) - Component of Changes in Accumulated Other Comprehensive Income (Loss), Net of Tax (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning, balance			$ (59)
Other comprehensive income (loss) before reclassifications			(14)
Amounts reclassified from accumulated other comprehensive loss
Total other comprehensive (loss) income	(22)	31	(14)	10
Ending, balance	(73)		(73)
Unrealized Gains on Available for Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning, balance			(22)
Other comprehensive income (loss) before reclassifications			62
Amounts reclassified from accumulated other comprehensive loss
Total other comprehensive (loss) income			62
Ending, balance	40		40
Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning, balance			(37)
Other comprehensive income (loss) before reclassifications			(76)
Amounts reclassified from accumulated other comprehensive loss
Total other comprehensive (loss) income			(76)
Ending, balance	$ (113)		$ (113)