Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net (loss) income		$ (4,344)	$ (1,174)	$ 36,738	$ (6,410)
Other comprehensive (loss) income, net of tax:
Unrealized gain on available-for-sale securities		0	0	0	1
Foreign currency translation adjustment		(1,109)	(763)	10,122	(2,185)
Unrealized gain on derivative instruments, net		0	12	11	49
Other comprehensive income (loss), net of tax	[1]	(1,109)	(751)	10,133	(2,135)
Total comprehensive (loss) income		$ (5,453)	$ (1,925)	$ 46,871	$ (8,545)

[1] Tax impact was nominal for all periods.