Note 1 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2020

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, 2020		372,200		$	3.85
Granted		11,300			2.95
Exercised		-
Cancelled		(4,000	)		3.29
Outstanding - June 30, 2020		379,500		$	3.83		8.13	$	218
Exercisable - June 30, 2020		182,240		$	3.72		7.70	$	119

Schedule of Inventory, Current [Table Text Block]

	June 30,			December 31,
	2020			2019
Raw Materials	$	15,846		$	15,245
Work in Process		628			479
Finished Goods		412			41
Reserves		(1,394	)		(1,486	)
Total	$	15,492		$	14,279

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

			June 30, 2020
			Gross
			Carrying		Accumulated		Net Book
	Years		Amount		Amortization		Value
Customer Relationships		9	$	1,302	$	723	$	579
Trade Names		3		100		100		-
Intellectual Property		20		814		203		611
Patents		7		47		-		47
Totals			$	2,263	$	1,026	$	1,237

			December 31, 2019
			Gross
			Carrying		Accumulated		Net Book
	Years		Amount		Amortization		Value
Customer Relationships		9	$	1,302	$	651	$	651
Intellectual Property		3		100		95		5
Trade Names		20		814		183		631
Patents		7		56		-		56
Totals			$	2,272	$	929	$	1,343

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

Year	Amount
Remainder of 2020	$	93
2021		186
2022		185
2023		185
2024		113
Thereafter		428
Total	$	1,190