Investments and Fair Value Measurements - Recurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Assets, Fair Value Disclosure [Abstract]
Investments, amortized cost	$ 12,231	$ 12,231	$ 14,995
Fair Value, Transfers Between Level 1 and Level 2, Description and Policy [Abstract]
Transfer from Level 1 to Level 2 , assets	0	0
Transfer from Level 2 to Level 1 , assets	0	0
Transfers into Level 3, assets		0
Transfer out of Level 3, assets	0	0
Recurring
Assets, Fair Value Disclosure [Abstract]
Cash and cash equivalents, fair value disclosure	6,059	6,059
Total	12,231	12,231	14,995
Recurring | Certificates of deposit.
Assets, Fair Value Disclosure [Abstract]
Cash and cash equivalents, fair value disclosure			6,661
Recurring | Corporate bonds
Assets, Fair Value Disclosure [Abstract]
Investments, amortized cost	6,172	6,172	8,334
Recurring | Significant Other Observable Inputs (Level 2)
Assets, Fair Value Disclosure [Abstract]
Cash and cash equivalents, fair value disclosure	6,059	6,059
Total	12,231	12,231	14,995
Recurring | Significant Other Observable Inputs (Level 2) | Certificates of deposit.
Assets, Fair Value Disclosure [Abstract]
Cash and cash equivalents, fair value disclosure			6,661
Recurring | Significant Other Observable Inputs (Level 2) | Corporate bonds
Assets, Fair Value Disclosure [Abstract]
Investments, amortized cost	$ 6,172	$ 6,172	$ 8,334