Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 89,116	$ 94,916	$ 90,596	$ 182,596
Current period other comprehensive income (loss) before reclassifications	217	(177)	195	(86)
Amounts reclassified from accumulated other comprehensive loss				(108)
Net other comprehensive income (loss) during period	217	(177)	195	(194)
Ending balance	123,446	86,307	123,446	86,307
Unrealized (Loss) Gain on Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0	0	0	(6)
Current period other comprehensive income (loss) before reclassifications	0	0	0	19
Amounts reclassified from accumulated other comprehensive loss				(13)
Net other comprehensive income (loss) during period	0	0	0	6
Ending balance	0	0	0	0
Gain (Loss) on Derivative Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0	0	0	223
Current period other comprehensive income (loss) before reclassifications	0	0	0	(128)
Amounts reclassified from accumulated other comprehensive loss				(95)
Net other comprehensive income (loss) during period	0	0	0	(223)
Ending balance	0	0	0	0
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(959)	(926)	(937)	(1,126)
Current period other comprehensive income (loss) before reclassifications	217	(177)	195	23
Amounts reclassified from accumulated other comprehensive loss				0
Net other comprehensive income (loss) during period	217	(177)	195	23
Ending balance	(742)	(1,103)	(742)	(1,103)
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(959)	(926)	(937)	(909)
Ending balance	$ (742)	$ (1,103)	$ (742)	$ (1,103)