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Available-for-Sale-Securities - Schedule of Available-for-Sale Securities Reconciliation (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Cost	$ 86,615	$ 91,522
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(196)	(70)
Estimated Fair Value	86,419	91,452
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Cost	62,770	53,135
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(162)	(65)
Estimated Fair Value	62,608	53,070
Money market funds
Debt Securities, Available-for-sale [Line Items]
Cost	6,578	18,124
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	6,578	18,124
Municipal debt securities
Debt Securities, Available-for-sale [Line Items]
Cost	17,267	20,263
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(34)	(5)
Estimated Fair Value	$ 17,233	$ 20,258

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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