Comprehensive Loss and Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 456,710	$ 385,083	$ 483,756	$ 412,394
Ending Balance	450,308	488,469	450,308	488,469
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(4,344)	(87)	(948)	312
Ending Balance	(5,295)	(213)	(5,295)	(213)
Unrealized Gains (Losses) on Investments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(3,675)	(109)	(887)	54
Other comprehensive loss before reclassifications	(691)	(14)	(3,407)	(177)
Amounts reclassified from accumulated other comprehensive loss to other income (expense)	0	0	(72)	0
Ending Balance	(4,366)	(123)	(4,366)	(123)
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(669)	22	(61)	258
Other comprehensive loss before reclassifications	(721)	(293)	(1,508)	(555)
Amounts reclassified from accumulated other comprehensive loss to other income (expense)	461	181	640	207
Ending Balance	$ (929)	$ (90)	$ (929)	$ (90)

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details