Note 4 - Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Property, Plant and Equipment [Table Text Block]

	As of December 31,
	2019			2018
	(in thousands)
Computers and equipment	$	4,623		$	4,077
Machinery and equipment		16,245			13,718
Building and leasehold improvements		11,758			11,651
Gross property and equipment		32,626			29,446
Less accumulated depreciation		(17,772	)		(15,344	)
Property and equipment, net	$	14,854		$	14,102

Depreciation Expense [Table Text Block]

	Year ended December 31,
	2019		2018		2017
			(in thousands)
Depreciation expense	$	2,979	$	2,564	$	2,266