Balance Sheet Components (Accrued Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Balance Sheet Components [Abstract]
Accrued payroll and related expenses	$ 12,865	$ 13,898
Provision for sales returns	531	359
Accrued professional services	1,144	2,039
Operating lease liability	1,814	1,294
Accrued interest payable	504	14
Accrued royalty expense	911	687
Deferred revenue	298	157
Accrued travel expenses	785	590
Accrued clinical expenses	38	99
Accrued other expenses	731	665
Total	$ 19,621	$ 19,802