Note 1 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 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		87,000			11.10
Exercised		(12,000	)		3.41
Cancelled		(4,400	)		3.36
Outstanding - June 30, 2022		458,100		$	5.82		6.97	$	3,326
Exercisable - June 30, 2022		222,700		$	3.93		6.12	$	2,038

Schedule of Inventory, Current [Table Text Block]

	June 30,			December 31,
	2022			2021
Raw Materials	$	21,764		$	18,492
Work in Process		1,793			1,678
Finished Goods		608			562
Reserves		(1,195	)		(1,298	)
Total	$	22,970		$	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
Additions		-		-		41		41
Amortization		71		-		-		71
Balance at June 30, 2022	$	289	$	-	$	182	$	471

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

Year	Amount
Remainder of 2022	$	72
2023		145
2024		72
Total	$	289