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Investments- Fair Value of the Company's Investments by Type (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Marketable Securities [Line Items]
Amortized Cost	$ 145,165	$ 9,989
Accrued Interest	190	65
Gross Unrealized Gains	2	0
Gross Unrealized Losses	(445)	(13)
Estimated Fair Value	144,912	10,041
Obligations of U.S. Government and its agencies
Marketable Securities [Line Items]
Amortized Cost	137,222	4,043
Accrued Interest	135	17
Gross Unrealized Gains	2	0
Gross Unrealized Losses	(393)	(7)
Estimated Fair Value	136,966	4,053
Corporate debt securities
Marketable Securities [Line Items]
Amortized Cost	6,299	4,294
Accrued Interest	47	40
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(38)	(5)
Estimated Fair Value	6,308	4,329
Certificates of deposit
Marketable Securities [Line Items]
Amortized Cost	1,644	1,652
Accrued Interest	8	8
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(14)	(1)
Estimated Fair Value	$ 1,638	$ 1,659

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