The components of accumulated other comprehensive income (loss) are as follows (in thousands):

							Total
	Net Unrealized Gain			Cumulative			Accumulated
	(Loss) on Marketable			Translation			Other Comprehensive
	Investments			Adjustment			Income (Loss)
Balance at January 1, 2017	$	(83	)	$	(7,490	)	$	(7,573	)
Foreign currency translation		—			4,905			4,905
Unrealized gain on investments, net of tax of $29		47			—			47
Balance at September 30, 2017	$	(36	)	$	(2,585	)	$	(2,621	)

							Total
	Net Unrealized Gain			Cumulative			Accumulated
	(Loss) on Marketable			Translation			Other Comprehensive
	Investments			Adjustment			Income (Loss)
Balance at July 1, 2017	$	(59	)	$	(4,186	)	$	(4,245	)
Foreign currency translation		—			1,601			1,601
Unrealized gain on investments, net of tax of $14		23			—			23
Balance at September 30, 2017	$	(36	)	$	(2,585	)	$	(2,621	)

							Total
	Net Unrealized Gain			Cumulative			Accumulated
	(Loss) on Marketable			Translation			Other Comprehensive
	Investments			Adjustment			Income (Loss)
Balance at January 1, 2016	$	(100	)	$	(4,726	)	$	(4,826	)
Foreign currency translation		—			(68	)		(68	)
Unrealized gain on investments, net of tax of $46		72			—			72
Balance at September 30, 2016	$	(28	)	$	(4,794	)	$	(4,822	)

							Total
	Net Unrealized Gain			Cumulative			Accumulated
	(Loss) on Marketable			Translation			Other Comprehensive
	Investments			Adjustment			Income (Loss)
Balance at July 1, 2016	$	20		$	(4,674	)	$	(4,654	)
Foreign currency translation		—			(120	)		(120	)
Unrealized loss on investments, net of tax of $(33)		(48	)		—			(48	)
Balance at September 30, 2016	$	(28	)	$	(4,794	)	$	(4,822	)