Unaudited Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net loss	$ (7,066,000)	$ (1,118,000)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities
Depreciation	1,653,000	777,000
Amortization of intangible assets	2,863,000	933,000
Stock-based compensation	5,399,000	1,505,000
Non-cash lease expense	524,000	410,000
Deferred income tax benefits	(599,000)	0
Change in fair value of contingent consideration	(3,335,000)	(491,000)
Change in fair value of warrant liability	(0)	121,000
Loss on disposal of property and equipment, net	18,000	0
(Gain) / loss on disposal of assets held for rent, net	(96,000)	65,000
Other	(17,000)	1,000
Change in operating assets and liabilities, net of effects of acquisitions
Accounts receivable, trade, net	(1,083,000)	(2,663,000)
Inventories	(1,855,000)	(65,000)
Prepaid expenses and other assets	(25,000)	52,000
Accounts payable	(3,231,000)	604,000
Accrued expenses and other current liabilities	(1,074,000)	1,689,000
Net cash (used in) provided by operating activities	(7,924,000)	1,820,000
Cash flows from investing activities
Purchases of property and equipment	(1,456,000)	(1,720,000)
Deposits on property and equipment	0	(672,000)
Purchases of assets held for rent	(814,000)	(2,038,000)
Proceeds from sale of equipment	0	3,000
Net cash used in investing activities	(2,270,000)	(4,427,000)
Cash flows from financing activities
Fees paid related to issuance of common stock	(50,000)
Proceeds from exercise of common stock options	257,000	243,000
Other	42,000	(79,000)
Net cash (used in) provided by financing activities	(181,000)	1,216,000
Net decrease in cash, cash equivalents, and restricted cash	(10,375,000)	(1,391,000)
Cash, cash equivalents, and restricted cash – beginning of period	69,870,000	90,456,000
Effects of currency translation on cash, cash equivalents, and restricted cash	(22,000)	0
Cash, cash equivalents, and restricted cash – end of period	59,473,000	89,065,000
Non-cash investing and financing activities
Cashless exercise of warrants reclassified from warrant liability to common stock	0	2,901,000
Equipment acquired under operating leases	243,000	1,232,000
Equipment acquired under finance leases	0	440,000
Purchase of property and equipment not yet paid	13,000	0
Reclassification of property and equipment, net to assets held for rent, net	0	27,000
Cash interest paid	91,000	0
Equipment Loans [Member]
Cash flows from financing activities
Proceeds from Loan	0	1,052,000
Payments on equipment loans	(125,000)	0
Financed Insurance Premium [Member]
Cash flows from financing activities
Payments on financed insurance premium	$ (305,000)	$ 0