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Note 5 - Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Schedule of Inventory, Current [Table Text Block]

		December 31,
(in thousands)		2020				2019
Finished goods		$	4,938			$	5,561
Work in process			3,513				3,153
Raw materials			13,811				13,347
Total		$	22,262			$	22,061

Other Current Liabilities [Table Text Block]

		December 31,
(in thousands)		2020				2019
Compensation		$	3,715				2,554
Professional fees			432				395
Warranty costs			185				252
Customer related costs			1,093				963
Interest			46				425
Accrued income taxes			286				609
Other			1,721				1,502
Total		$	7,478			$	6,700

Property, Plant and Equipment [Table Text Block]

		December 31,
(in thousands)		2020				2019
Machinery and equipment		$	7,450			$	7,198
Computer equipment and software			9,114				8,954
Leasehold improvements			2,540				2,151
Furniture and fixtures			1,353				1,321
Automobiles			100				92
			20,557				19,716
Less: accumulated depreciation			(16,597	)			(14,940	)
Property, plant and equipment, net		$	3,960			$	4,776

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