Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Property Plant And Equipment [Abstract]

Property and Equipment, Net

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

	Estimated Useful		December 31,
	Life (Years)		2018			2017
Land		—	$	875		$	875
Buildings	39-40			17,389			17,389
Building improvements	5-40			34,967			34,957
Machinery and equipment	3-15			61,217			62,681
Furniture, fixtures and office equipment	5-10			2,954			3,556
Computer equipment and software		3		8,355			8,416
Construction in progress		—		342			—
				126,099			127,874
Less accumulated depreciation				(100,497	)		(100,952	)
Total property and equipment, net			$	25,602		$	26,922