CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
Net (loss) income	$ (13,693)	$ 3,498	$ 3,117
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	8,961	6,384	4,202
Allowance for doubtful accounts	1,022	636	300
Provision for excess and obsolete inventories	2,821	7,467	1,712
Stock-based compensation	4,948	1,808	1,754
Amortization of debt issuance costs	576	134	85
Change in fair value of earnout liabilities	440
Deferred income taxes	170	1,307	(1,115)
Loss on disposal of property and equipment	237	554	545
Other	31	113	(26)
Changes in other assets and liabilities, net of acquisitions:
Accounts receivable	(6,461)	386	(5,221)
Inventories	(11,098)	(14,831)	(3,560)
Other current assets	(2,468)	944	(618)
Accounts payable	3,431	(6,238)	8,430
Accrued expenses and other current liabilities	7,095	(815)	3,098
Income tax receivable/payable	671	(236)	(405)
Net cash (used in) provided by operating activities	(3,317)	1,111	12,298
Cash flows from investing activities
Purchases of property and equipment	(18,296)	(9,653)	(17,261)
Proceeds from sale of property and equipment	799	522	580
Purchases of intangible assets	(2,993)	(1,187)	(773)
Acquisition of Additive Orthopaedics	(15,000)
Net cash used in investing activities	(35,490)	(10,318)	(17,454)
Cash flows from financing activities
Proceeds from issuance of note payable - related party			3,000
Payments on note payable - related party		(3,000)
Proceeds from revolving credit facility			780
Payments on revolving credit facility		(9,821)
Proceeds from issuance of long-term debt	10,000	458	8,885
Payments on long-term debt	(6,034)	(1,686)	(2,200)
Payments of debt issuance costs	(3,139)	(53)	(150)
Proceeds from issuance of common stock	1,001	1,842
Proceeds from IPO, net of issuance costs	129,384
Proceeds from issuance of Series B capital stock, net of issuance costs		36,030
Payments on treasury stock repurchased	(561)	(1,538)	(3,885)
Proceeds from exercise of stock options	445	1,780	115
Net cash provided by financing activities	131,096	24,012	6,545
Effect of exchange rate changes on cash	(438)	86	29
Net increase in cash	91,851	14,891	1,418
Cash at beginning of period	17,501	2,610	1,192
Cash at end of period	109,352	17,501	2,610
Supplemental disclosures of cash flow information:
Cash paid for taxes	678	453	97
Cash paid for interest	1,086	395	550
Purchase of property and equipment included in accounts payable	$ 881	120	$ 115
Series B convertible preferred stock dividend		$ 812