Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating Activities:
Net loss	$ (57,671)	$ (46,581)
Adjustments to reconcile net loss to net cash and cash equivalents used in operating activities:
Depreciation	2,481	2,416
Amortization of intangible assets	7,601	8,533
Amortization of discounts and premiums on investments, net	556	65
Stock-based compensation	6,361	6,589
Gain on extinguishment of debt	0	(2,847)
Deferred tax expense (benefit)	224	(4)
Change in inventory reserves	386	377
Bad debt expense	9	0
Property and equipment impairment	432	0
Loss on disposal of property and equipment	97	0
Change in fair value of warrant liabilities	(0)	1,981
Change in fair value of contingent consideration	(1,168)	1,013
Changes in operating assets and liabilities:
Accounts receivable	(1,735)	113
Inventories	(535)	(1,941)
Operating lease right-of-use assets	237	(3,174)
Prepaid expenses	(693)	1,220
Employee retention tax credit receivable	164	(1,311)
Other current and long-term assets	(2,123)	2,098
Accounts payable	449	1,376
Accrued expenses	236	(588)
Deferred revenue	(139)	(81)
Operating lease liabilities	(53)	3,259
Net cash and cash equivalents used in operating activities	(44,884)	(27,487)
Investing Activities:
Purchase of available-for-sale investments	(25,588)	(88,232)
Proceeds from maturities of available-for-sale investments	67,702	0
Purchase of property and equipment	(904)	(838)
Net cash and cash equivalents provided by (used in) investing activities	41,210	(89,070)
Financing Activities:
Proceeds from issuance of common stock, net of issuance costs	0	130,361
Taxes paid related to net share settlement of vesting of restricted stock units	(350)	(1,058)
Proceeds from exercise of stock options and warrants	18	30,838
Net cash and cash equivalents (used in) provided by financing activities	(332)	160,141
Effect of exchange rate changes on cash and cash equivalents	(300)	(181)
Net (decrease) increase in cash, cash equivalents and restricted cash	(4,306)	43,403
Cash, cash equivalents and restricted cash, beginning of period	19,283	17,529
Cash, cash equivalents and restricted cash, end of period	14,977	60,932
Supplemental Disclosure for Cash Flow Information
Cash paid for leases	729	781
Cash paid for taxes	79	63
Supplemental Schedule of Non-cash Investing and Financing Activities:
Transfer of inventories to property and equipment	1,293	2,156
Reclass of warrant liability to common stock and additional paid-in-capital	0	2,236
Lease liabilities arising from obtaining right-of-use assets	$ 316	$ 3,857