Property, Plant and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment, Net [Abstract]

Property, Plant and Equipment

Property, plant and equipment, net includes the following:

	December 31
	2017		2016
Real estate:
HBB	$	226	$	226
Plant and equipment:
HBB	59,024		53,495
KC	25,560		25,149
	84,584		78,644
Property, plant and equipment, at cost	84,810		78,870
Less allowances for depreciation and amortization	65,727		62,927
	$	19,083	$	15,943