Note 1 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2019

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, 2019		224,750		$	3.44
Granted		169,500			4.44
Exercised		(2,250	)		3.20
Cancelled		(23,250	)		3.85
Outstanding - June 30, 2019		368,750		$	3.88		9.01	$	134
Exercisable - June 30, 2019		111,817		$	3.46		7.06	$	64

Schedule of Inventory, Current [Table Text Block]

	June 30,			December 31,
	2019			2018
Raw Materials	$	16,447		$	16,769
Work in Process		780			1,015
Finished Goods		212			332
Reserves		(1,166	)		(1,112	)
Total	$	16,273		$	17,004

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

			June 30, 2019
			Gross
			Carrying		Accumulated		Net Book
	Years		Amount		Amortization		Value
Customer Relationships		9	$	1,302	$	578	$	724
Trade Names		3		100		78		22
Intellectual Property		20		814		163		651
Patents		7		42		-		42
Totals			$	2,258	$	819	$	1,439

			December 31, 2018
			Gross
			Carrying		Accumulated		Net Book
	Years		Amount		Amortization		Value
Customer Relationships		9	$	1,302	$	506	$	796
Intellectual Property		3		100		61		39
Trade Names		20		814		143		671
Patents		7		17		-		17
Totals			$	2,233	$	710	$	1,523

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

Year	Amount
Remainder of 2019	$	109
2020		192
2021		185
2022		185
2023		185
Thereafter		541
Total	$	1,397