Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Cash flows from operating activities
Net loss	$ (10,756)	$ (27,436)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	361	126
Provision for doubtful accounts	48	142
Provision for inventory obsolescence and write-downs	95	0
Gain on disposal of fixed asset		(9)
Change in fair value of warrant liability	(188)	20,539
Change in fair value of earnout liability	(6,172)
Change in fair value of derivative liability	(2,555)
Stock-based compensation	972	68
Amortization of debt discount	2,119	985
Non-cash impact of operating lease right-of-use asset	267	553
Issuance of common stock warrants for services performed		433
Changes in operating assets and liabilities:
Accounts receivable	213	(557)
Inventories	(2,785)	(1,386)
Prepaid expenses and other assets	80	(2,481)
Accounts payable	(898)	1,304
Accrued expenses and other liabilities	3,057	1,089
Net cash used in operating activities	(16,142)	(6,630)
Cash flows from investing activities
Purchase of property and equipment	(2,024)	(569)
Proceeds from disposal of property and equipment		9
Net cash used in investing activities	(2,024)	(560)
Cash flows from financing activities
Proceeds from facility borrowings		7,000
Proceeds from the exercise of Series C redeemable convertible preferred warrants		1,500
Payments on finance lease obligations	(15)	(6)
Proceeds from exercise of stock options	6	10
Net cash (used in) provided by financing activities	(9)	8,504
Net (decrease) increase in cash	(18,175)	1,314
Cash - Beginning of period	168,538	460	$ 460
Cash - End of period	150,363	1,774	$ 168,538
Supplemental cash flow information
Cash paid for interest	113	350
Significant noncash transactions
Reduction of warrant liability for conversion of warrants into Series C redeemable convertible preferred stock		$ 5,310
Property and equipment included in accounts payable and accruals	387
Finance lease right-of-use asset in exchange for a lease liability	$ 183