Note 1 - Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2023

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, 2023		452,700		$	5.97
Granted		54,000			9.63
Exercised		(38,244	)		4.09
Cancelled		(43,956	)		7.50
Outstanding - September 30, 2023		424,500		$	6.45		6.48	$	1,375
Exercisable - September 30, 2023		242,800		$	4.44		5.16	$	1,197

Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]

	Shares			Weighted- Average Grant Date Fair Value		Weighted- Average Remaining Contractual Term (in years)		Aggregate Fair Value (in thousands)
Outstanding - January 1, 2023		21,000		$	12.00
Granted		18,000			9.37
Vested		(10,500	)		12.00
Forfeited		(6,000	)		10.93
Outstanding - September 30, 2023		22,500		$	10.18		9.23	$	208

Schedule of Inventory, Current [Table Text Block]

	September 30,			December 31,
	2023			2022
Raw Materials	$	20,551		$	21,673
Work in Process		1,220			1,238
Finished Goods		828			671
Reserves		(1,132	)		(1,144	)
Total	$	21,467		$	22,438

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

	Customer Relationships		Patents		Total
Balance at January 1, 2022	$	360	$	141	$	501
Additions		-		71		71
Amortization		144		6		150
Balance at December 31, 2022		216		206		422
Amortization		108		11		119
Balance at September 30, 2023	$	108	$	195	$	303

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

Year	Amount
Remainder of 2023	$	40
2024		87
2025		14
2026		14
Thereafter		38
Total	$	193

Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]

Condensed Consolidated Statements of Cash Flows
	September 30, 2022
CASH FLOWS FROM FINANCING ACTIVITIES	As reported			Adjustment			As revised
Net Proceeds from Line of Credit		857			(857	)		-
Proceeds from Line of Credit		-			88,673			88,673
Payments to Line of Credit		-			(87,816	)		(87,816	)
Principal Payments on Long-Term Debt		-			-			-
Principal Payments on Financing Leases		(326	)		-			(326	)
Stock Option Exercises		51			-			51
Net Cash Provided by Financing Activities		582			-			582