Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Schedule of Components of Accumulated Other Comprehensive Loss

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

							Total
	Net Unrealized			Cumulative			Accumulated
	Loss on Marketable			Translation			Other Comprehensive
	Investments			Adjustment			Loss
Balance at January 1, 2018	$	(115	)	$	(1,897	)	$	(2,012	)
Reclassification of stranded tax effects from tax reform		(26	)		—			(26	)
Foreign currency translation		—			(1,691	)		(1,691	)
Unrealized loss on investments, net of tax of $(17)		(53	)		—			(53	)
Balance at June 30, 2018	$	(194	)	$	(3,588	)	$	(3,782	)

							Total
	Net Unrealized			Cumulative			Accumulated
	Loss on Marketable			Translation			Other Comprehensive
	Investments			Adjustment			Loss
Balance at January 1, 2017	$	(83	)	$	(7,490	)	$	(7,573	)
Foreign currency translation		—			3,304			3,304
Unrealized gain on investments, net of tax of $15		24			—			24
Balance at June 30, 2017	$	(59	)	$	(4,186	)	$	(4,245	)

							Total
	Net Unrealized			Cumulative			Accumulated
	Loss on Marketable			Translation			Other Comprehensive
	Investments			Adjustment			Loss
Balance at April 1, 2018	$	(256	)	$	(194	)	$	(450	)
Foreign currency translation		—			(3,394	)		(3,394	)
Unrealized gain on investments, net of tax of $21		62			—			62
Balance at June 30, 2018	$	(194	)	$	(3,588	)	$	(3,782	)

							Total
	Net Unrealized			Cumulative			Accumulated
	Loss on Marketable			Translation			Other Comprehensive
	Investments			Adjustment			Loss
Balance at April 1, 2017	$	(66	)	$	(6,700	)	$	(6,766	)
Foreign currency translation		—			2,514			2,514
Unrealized gain on investments, net of tax of $4		7			—			7
Balance at June 30, 2017	$	(59	)	$	(4,186	)	$	(4,245	)