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Investments and Fair Value Measurements - Components of Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Cost Basis	$ 87,354	$ 105,546
Unrealized Gains (Losses)	(22)	(22)
Market Value	87,332	105,524
Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Market Value	39,469	38,301
Short-term Investments and Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Market Value	47,863	55,179
Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Market Value		12,044
Level 1 | Money market fund
Debt Securities, Available-for-sale [Line Items]
Cost Basis	39,469	38,301
Unrealized Gains (Losses)	0	0
Market Value	39,469	38,301
Level 1 | Money market fund | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Market Value	39,469	38,301
Level 1 | Money market fund | Short-term Investments and Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Market Value	0	0
Level 1 | Money market fund | Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Market Value		0
Level 1 | U.S. Treasury bonds
Debt Securities, Available-for-sale [Line Items]
Cost Basis	9,396	8,171
Unrealized Gains (Losses)	(13)	0
Market Value	9,383	8,171
Level 1 | U.S. Treasury bonds | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Market Value	0	0
Level 1 | U.S. Treasury bonds | Short-term Investments and Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Market Value	9,383	8,171
Level 1 | U.S. Treasury bonds | Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Market Value		0
Level 2 | Commercial paper
Debt Securities, Available-for-sale [Line Items]
Cost Basis	26,704	23,312
Unrealized Gains (Losses)	0	0
Market Value	26,704	23,312
Level 2 | Commercial paper | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Market Value	0	0
Level 2 | Commercial paper | Short-term Investments and Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Market Value	26,704	23,312
Level 2 | Commercial paper | Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Market Value		0
Level 2 | Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Cost Basis	9,353	20,107
Unrealized Gains (Losses)	(12)	(14)
Market Value	9,341	20,093
Level 2 | Corporate bonds | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Market Value	0	0
Level 2 | Corporate bonds | Short-term Investments and Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Market Value	9,341	8,049
Level 2 | Corporate bonds | Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Market Value		12,044
Level 2 | Agency bonds
Debt Securities, Available-for-sale [Line Items]
Cost Basis	2,432
Unrealized Gains (Losses)	3
Market Value	2,435
Level 2 | Agency bonds | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Market Value
Level 2 | Agency bonds | Short-term Investments and Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Market Value	$ 2,435
Level 2 | Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Cost Basis		15,655
Unrealized Gains (Losses)		(8)
Market Value		15,647
Level 2 | Asset-backed securities | Cash and Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Market Value		0
Level 2 | Asset-backed securities | Short-term Investments and Marketable Securities
Debt Securities, Available-for-sale [Line Items]
Market Value		15,647
Level 2 | Asset-backed securities | Long-term Investments
Debt Securities, Available-for-sale [Line Items]
Market Value		$ 0

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- Definition

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-Publisher FASB
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