Note 6 - Property and Equipment, Net

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Property, Plant and Equipment Disclosure [Text Block]

6.

Property and equipment, net

Property and equipment, net consists of the following as of:

	December 31,
(in thousands)	2018			2017
Laboratory equipment	$	2,951		$	2,493
Leasehold improvements		5,663			2,766
Office equipment, furniture and fixtures		3,019			2,205
Software		1,626			756
Construction in progress		—			94
Property and equipment		13,259			8,314
Less accumulated depreciation		(6,115	)		(5,550	)
Property and equipment, net	$	7,144		$	2,764

For the years ended

December 

31,

2018,

2017

and

2016,

the Company recorded depreciation expense of

$1.6

million,

$1.4

million and

$0.9

million, respectively. Depreciation expense includes amortization of capital leases.

Depreciable lives range from

three

to

ten

years for laboratory equipment, office equipment, leasehold improvements, and furniture and fixtures and

three

years for software and specialized shipping containers.

For the years ended

December 

31,

2018

and

2017,

there were

no

material capital leases, disposals or retirements.