Other Financial Information - Accrued and Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Other Financial Information [Abstract]
Accrued payroll and related expenses	$ 3,353		$ 4,048
Accrued interest	136		139
Accrued purchases of goods and services	1,227		510
Accrued royalties	69		180
Accrued clinical study activity	165		254
Finance lease obligations, current portion	730		587
Refund liability	445		0
Other accrued liabilities	529		1,108
Accrued and other current liabilities	$ 6,654	$ 5,970	$ 6,826