Property and equipment, net (Tables)

9 Months Ended

Sep. 30, 2017

Property and equipment, net, consisted of the following (in thousands):

	Useful Life		September 30,			December 31,
Asset Class	(Years)		2017			2016

Operational equipment		3-10	$	15,773		$	15,132
Lab equipment		5		646			547
Computer equipment		3		175			140
Office furniture and equipment		5		321			298
Leasehold improvements		5-7		1,408			1,408
Land		—		1,047			1,047
Building		39		24,687			21,962
Asset Retirement Cost		20		670			—
Equipment under construction				3,672			1,635
				48,399			42,169
Less: accumulated depreciation				(2,914	)		(777	)

			$	45,485		$	41,392