Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	11 Months Ended		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Letters of Credit Outstanding, Amount	$ 400		$ 400
Restricted Cash and Cash Equivalents, Current, Total	1,582	$ 3,212	1,582	$ 3,212
Accounts Receivable, Allowance for Credit Loss, Ending Balance	328	$ 343	328	$ 343
Employee Retention Credit	5,209
Preferred Stock, Dividend Rate, Percentage		12.00%
Preferred Stock, Liquidation Preference Per Share (in dollars per share)		$ 1.00		$ 1.00
Preferred Stock, Dividends Per Share, Declared (in dollars per share)					$ 0
Advertising Expense			$ 57	$ 42
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)			156,937	0
Cumulative Translation Adjustment, Net of Tax, Period Increase (Decrease), Total			$ (93)	$ (220)
Foreign Currency Transaction Gain (Loss), before Tax, Total			$ 131	$ 32
Revenue Benchmark [Member] | Product Concentration Risk [Member] | Geographic Distribution, Domestic [Member]
Concentration Risk, Percentage			3.10%	2.80%
Employee-related Liabilities, Current [Member]
Accrual for Taxes Other than Income Taxes	$ 1,158		$ 1,158
Cost of Sales [Member]
Employee Retention Credit			4,670
Selling Expense [Member]
Employee Retention Credit			125
General and Administrative Expense [Member]
Employee Retention Credit			$ 414