Note 5 - Property and Equipment, Net

12 Months Ended

Dec. 31, 2019

Notes to Financial Statements

Property, Plant and Equipment Disclosure [Text Block]

5. Property and Equipment, net

Property and equipment consist of the following:

	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

Depreciation and amortization expense for the years ended December 31, 2019, 2018 and 2017 was $22,399, $20,227 and $20,631, respectively.

As of December 31, 2019 and 2018, computer software costs included in property and equipment were $7,339 and $6,879, respectively. Amortization expense of capitalized computer software costs was $384, $591 and $1,038, for the years ended December 31, 2019, 2018 and 2017, respectively.

Property and equipment not paid as of December 31, 2019 and 2018 was $4,728 and $2,580, respectively.