Property and Equipment

12 Months Ended

Dec. 31, 2017

Property and Equipment

Property and Equipment

Note 5.  Property and Equipment

At December 31, 2017 and 2016, net property and equipment at cost consisted of the following:

	December 31,
(In thousands)	2017		2016
Leasehold improvements	$	671	$	671
Laboratory equipment and other		5,261		5,127
Total property and equipment, at cost		5,932		5,798
Less: Accumulated depreciation and amortization		4,460		3,945
Property and equipment, net	$	1,472	$	1,853

Depreciation and amortization expense on Property and equipment was approximately $0.7 million, $0.6 million and $0.5 million in 2017, 2016 and 2015, respectively.  See Note 16, “Supplemental Disclosure of Cash Flow Information”, for information related to non-cash property additions.