Property and Equipment

6 Months Ended

Jun. 30, 2017

Property Plant And Equipment [Abstract]

Property and Equipment

3. Property and Equipment

Property and equipment consist of the following (in thousands):

	As of
	June 30, 2017			December 31, 2016
Lab equipment and machinery (1)	$	58,802		$	58,289
Leasehold improvements		6,248			6,246
Computer equipment and software		4,870			4,640
Furniture and fixtures		221			219
Construction in progress		379			590
Total property and equipment		70,520			69,984
Less accumulated depreciation		(61,891	)		(59,020	)
Property and equipment, net	$	8,629		$	10,964

(1) Includes $80,000 and $90,000 (in net book value) of lab equipment and machinery acquired under capital leases, as of June 30, 2017 and December 31, 2016, respectively. See Note 5 for detailed lease information.

The following table presents depreciation expense included in the Condensed Consolidated Statement of Operations and includes amortization of leasehold improvements (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
Depreciation expense	$	1,394	$	1,587	$	2,865	$	3,224