Other Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Other Income and Expenses [Abstract]
Foreign currency gains (losses)	$ 47	$ (359)	$ 89	$ (287)
Tax indemnification income	802	687	1,604	1,528
Interest income	276	8	559	15
Other	187	0	247	0
Total other income	$ 1,312	$ 336	$ 2,499	$ 1,256