Comprehensive Loss and Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 462,422	$ 456,710	$ 456,754	$ 483,756
Ending Balance	462,833	450,308	462,833	450,308
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(2,609)	(4,344)	(4,096)	(948)
Ending Balance	(2,184)	(5,295)	(2,184)	(5,295)
Unrealized Gains (Losses) on Investments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(2,230)	(3,675)	(3,698)	(887)
Other comprehensive income (loss) before reclassifications	701	(691)	2,169	(3,407)
Amounts reclassified to other income (expense)	0	0	0	(72)
Ending Balance	(1,529)	(4,366)	(1,529)	(4,366)
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(379)	(669)	(398)	(61)
Other comprehensive income (loss) before reclassifications	(286)	(721)	(133)	(1,508)
Amounts reclassified to other income (expense)	10	461	(124)	640
Ending Balance	$ (655)	$ (929)	$ (655)	$ (929)