Property and Equipment

6 Months Ended

Jun. 30, 2018

Property, Plant and Equipment [Abstract]

Property and Equipment

6. Property and equipment:

Property and equipment, summarized by major category, consist of the following as of:

	June 30, 2018			December 31, 2017
Machinery & equipment	$	5,623		$	5,428
Computer equipment & software		413			399
Office furniture & equipment		169			169
Leasehold improvements		44			44
Idle equipment		679			766
Total		6,928			6,806
Less accumulated depreciation and amortization		(3,562	)		(3,028	)
Total property and equipment, net	$	3,366		$	3,778

Depreciation and amortization expense for the six-month periods ended June 30, 2018 and June 30, 2017, was approximately $0.5 million and $3.0 million, respectively. Depreciation expense for the three-month periods ended June 30, 2018 and June 30, 2017, was approximately $0.2 million and $1.5 million, respectively.