Property, Plant and Equipment

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

NOTE 4.  PROPERTY, PLANT AND EQUIPMENT

(Dollars in thousands)	Range of useful lives	2016			2015
Land		$	4,712		$	4,736
Buildings and improvements	10-40 years		54,448			54,362
Machinery and equipment	2-25 years		190,316			189,428
Construction in progress			1,437			224
			250,913			248,750
Less: accumulated depreciation			(178,093	)		(173,465	)
Total property, plant and equipment, net		$	72,820		$	75,285

Depreciation charged against operating income totaled $8.3 million, $8.2 million and $8.1 million in 2016, 2015 and 2014, respectively.

Interest expense capitalized was inconsequential in 2016, and $0.2 million and $0.1 million in 2015 and 2014, respectively.