Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating activities:
Net income (loss)	$ (9,803)	$ 3,570
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Bad debt expense	235	(12)
Depreciation and amortization	2,883	2,044
Stock-based compensation	1,551	300
Inventory reserve	441	(29)
Deferred taxes	(2,837)	2,090
Amortization of debt issuance costs	134	0
Loss on disposal of property, plant and equipment	41	11
Other	(10)	37
Changes in operating assets and liabilities:
Accounts receivable	(278)	(2,352)
Inventories	(2,253)	(987)
Income taxes receivable	229	(1,241)
Prepaid expenses and other current assets	(1,301)	(949)
Accounts payable	270	867
Accrued liabilities	1,810	(886)
Other	(181)	42
Cash provided by (used in) operating activities	(9,069)	2,505
Investing activities:
Purchase of property, plant and equipment	(19,877)	(5,466)
Proceeds from loan to related party	529	27
Purchase of short-term marketable securities	0	(1,763)
Proceeds on sales of short-term marketable securities	1,132	1,747
Proceeds from maturities of short-term marketable securities	695	3,720
Cash provided by (used in) investing activities	(17,521)	(1,735)
Financing activities:
Repayment of long-term debt	0	(45)
Indemnity holdback release	0	(1,554)
Proceeds from Long-term Debt, Net	11,889	0
Debt issuance costs	(153)	0
Payments for Repurchase of Initial Public Offering	(3,615)	0
Proceeds from initial public offering, net of underwriters' commissions and discounts	102,672	0
Cash provided by (used in) financing activities	110,793	(1,599)
Change in cash and cash equivalents	84,203	(829)
Cash and cash equivalents at beginning of period	3,315	4,144
Cash and cash equivalents at end of period	87,518	3,315
Supplemental cash flow disclosures:
Income taxes paid	8	323
Interest paid, net of amounts capitalized	414	36
Capitalized Property, Plant And Equipment Included In Accounts Payable And Accrued Liabilities	2,088	387
Conversion of convertible and redeemable preferred stock into common stock	35,638	0
Accretion of convertible and redeemable preferred stock to redemption value	$ 300	$ 0