Property and Equipment

6 Months Ended

Jun. 30, 2019

Property, Plant and Equipment [Abstract]

Property and Equipment

5. Property and equipment:

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

	June 30, 2019			December 31, 2018
Machinery & equipment	$	5,635		$	5,635
Right of use, building lease		833			—
Computer equipment & software		437			406
Office furniture & equipment		161			155
Leasehold improvements		43			43
Idle equipment		679			679
Total		7,788			6,918
Less accumulated depreciation and amortization		(3,935	)		(3,846	)
Total property and equipment, net	$	3,853		$	3,072

Depreciation expense for the three-month periods ended June 30, 2019 and June 30, 2018, was approximately $0.08 million and $0.2 million, respectively. Depreciation expense for the six-month periods ended June 30, 2019 and June 30, 2018, was approximately $0.2 million and $0.5 million, respectively.