Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating activities:
Net loss	$ (15,496)	$ (8,428)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	3,902	5,481
Non-cash lease expense	673	618
Provision for doubtful accounts	0	(3)
Provision for excess and obsolete inventory	0	(97)
Stock based compensation	2,754	2,295
Changes in operating accounts:
Accounts receivable	(975)	3,640
Prepaid expenses and other assets	(527)	(225)
Accounts payable and accrued liabilities	(1,812)	(1,077)
Deferred revenue	(146)	(708)
Net cash (used in) provided by operating activities	(11,627)	1,496
Investing activities:
Acquisitions, net	0	(56,865)
Capital expenditures	(112)	(336)
Other investing activities	83	69
Net cash used in investing activities	(29)	(57,132)
Financing activities:
Proceeds from common stock offering, net of offering expenses	0	59,711
Proceeds from exercise of common stock warrants	0	40
Proceeds from financing arrangements	1,291	0
Repayments of financing arrangements	(391)	0
Other financing activities	35	67
Net cash provided by financing activities	935	59,818
Net (decrease) increase in cash and cash equivalents	(10,721)	4,182
Cash and cash equivalents, beginning of period	16,078	25,754
Cash and cash equivalents, end of period	5,357	29,936
Supplemental disclosures of cash flow information:
Cash paid for income taxes	174	63
Non-cash investing and financing activities:
Issuance of common stock in connection with acquisition	$ 0	$ 8,381