Investments Securities and Fair Value Measurements - Fair Value Measurements (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale investment securities:	$ 114,458	$ 125,676
Corporate bonds
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale investment securities:	17,387	29,069
Agency securities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale investment securities:	17,023	19,726
Treasury securities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale investment securities:	80,048	76,881
Fair value, measurements, recurring
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total	157,718	131,781
Fair value, measurements, recurring | Corporate bonds
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale investment securities:	17,387	29,069
Fair value, measurements, recurring | Agency securities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale investment securities:	17,023	19,726
Fair value, measurements, recurring | US Treasury and Government
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale investment securities:	80,048	76,881
Fair value, measurements, recurring | Money market funds
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Cash equivalents:	41,973	6,105
Fair value, measurements, recurring | Treasury securities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Cash equivalents:	1,287
Fair value, measurements, recurring | Level 1
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total	123,308	82,986
Fair value, measurements, recurring | Level 1 | Corporate bonds
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale investment securities:	0	0
Fair value, measurements, recurring | Level 1 | Agency securities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale investment securities:	0	0
Fair value, measurements, recurring | Level 1 | US Treasury and Government
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale investment securities:	80,048	76,881
Fair value, measurements, recurring | Level 1 | Money market funds
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Cash equivalents:	41,973	6,105
Fair value, measurements, recurring | Level 1 | Treasury securities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Cash equivalents:	1,287
Fair value, measurements, recurring | Level 2
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total	34,410	48,795
Fair value, measurements, recurring | Level 2 | Corporate bonds
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale investment securities:	17,387	29,069
Fair value, measurements, recurring | Level 2 | Agency securities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale investment securities:	17,023	19,726
Fair value, measurements, recurring | Level 2 | US Treasury and Government
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Available-for-sale investment securities:	0	0
Fair value, measurements, recurring | Level 2 | Money market funds
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Cash equivalents:	0	$ 0
Fair value, measurements, recurring | Level 2 | Treasury securities
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Cash equivalents:	$ 0