Note 1 - Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Shares			Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Outstanding - January 1, 2022		387,500		$	4.57
Granted		74,000			10.73
Exercised		(10,000	)		3.43
Cancelled		(600	)		3.29
Outstanding - March 31, 2022		450,900		$	5.58		7.12	$	2,063
Exercisable - March 31, 2022		204,500		$	3.92		6.32	$	889

Schedule of Inventory, Current [Table Text Block]

	March 31, 2022			December 31, 2021
Raw Materials	$	20,221		$	18,492
Work in Process		1,796			1,678
Finished Goods		565			562
Reserves		(1,395	)		(1,298	)
Total	$	21,187		$	19,434

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	Customer Relationships		Trade Names		Patents		Total
Balance at January 1, 2021	$	507	$	589	$	77	$	1,173
Additions		-		-		64		64
Amortization		147		29		-		176
Abandonment Loss		-		560		-		560
Balance at December 31, 2021		360		-		141		501
Amortization		36		-		-		36
Balance at March 31, 2022	$	324	$	-	$	141	$	465

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Year	Amount
Remainder of 2022	$	109
2023		145
2024		70
Total	$	324