Note 5 - Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Property, Plant and Equipment [Table Text Block]

	December 31,
	2019			2018
Laboratory and production equipment	$	144,866		$	121,716
Office, software and computer equipment		37,241			30,190
Furniture and fixtures		1,617			1,558
Leasehold improvements		8,282			7,609
		192,006			161,073
Less accumulated depreciation		(112,443	)		(90,333	)
	$	79,563		$	70,740