Property, Plant, and Equipment (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, plant, and equipment consisted of the following at December 31:

(dollars in thousands)	2017			2016
Buildings	$	59,314		$	59,314
Machinery and equipment	52,383			49,079
Computer software	17,635			14,849
Computer equipment	4,855			4,599
Furniture and fixtures	1,876			1,772
Leasehold improvements	1,590			1,477
Land improvements	493			493
Land	395			401
Buildings improvements	613			189
Construction in progress	219,234			53,891
	358,388			186,064
Accumulated depreciation and amortization	(31,984		)	(23,832		)
Total	$	326,404		$	162,232