Property, Plant and Equipment

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

7.  PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment are stated at cost and are depreciated and amortized over a period of three to 39 years generally under the straight-line method for financial reporting purposes and accelerated methods for income tax purposes.

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

	2017			2016
Land	$	2,089		$	2,089
Buildings and improvements		45,147			43,950
Machinery and equipment		243,392			237,434
Furniture and fixtures		6,320			5,656
Construction in-progress and deposits		4,120			2,471
		301,068			291,600
Accumulated depreciation and amortization		(259,712	)		(254,026	)
Net balance	$	41,356		$	37,574

Depreciation expense for the years ended December 31, 2017, 2016 and 2015 was approximately $8,763,000, $8,304,000, and $9,028,000 respectively. As of December 31, 2017, the Company had approximately $1,911,000 of capital expenditure commitments.