Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Summary of Property, Plant and Equipment Assets

Property, plant and equipment is comprised of the following:

	As of December 31,
	2017			2016
Land	$	1,130		$	2,330
Buildings and improvements	64,201			63,621
Machinery and equipment	223,650			213,198
Less: Accumulated depreciation	(200,734		)	(197,038		)
Property, plant and equipment, net	$	88,247		$	82,111

Summary of Depreciation Expense

Depreciation expense recorded in the Consolidated Statements of Earnings includes the following:

	For the Years Ended
	2017		2016		2015
Depreciation expense	$	14,071	$	13,177	$	12,219