Property and Equipment (Tables)

9 Months Ended

Sep. 30, 2018

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

	Estimated Useful Life (Years)		September 30, 2018			December 31, 2017
Land		—	$	875		$	875
Buildings	39-40			17,389			17,389
Building improvements	5-40			34,957			34,957
Machinery and equipment	3-15			62,615			62,681
Furniture, fixtures and office equipment	5-10			3,106			3,556
Computer equipment and software		3		8,416			8,416
				127,358			127,874
Less accumulated depreciation				(101,726	)		(100,952	)
Total property and equipment, net			$	25,632		$	26,922

Depreciation expense related to property and equipment for the three and nine months ended September 30, 2018 and 2017 was as follows (in thousands):

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2018		2017		2018		2017
Depreciation Expense	$	404	$	454	$	1,289	$	1,350