Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, plant and equipment as of December 31 were as follows (in thousands):

	2016			2015
Land	$	2,089		$	2,089
Buildings and improvements		43,950			44,647
Machinery and equipment		237,434			231,305
Furniture and fixtures		5,656			5,652
Construction in-progress and deposits		2,471			3,839
		291,600			287,532
Accumulated depreciation and amortization		(254,026	)		(250,082	)
Net balance	$	37,574		$	37,450