Property, Plant, and Equipment and Assets Held for Sale - Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment, net
Gross property, plant and equipment	$ 159,505	$ 179,843
Less: accumulated depreciation and amortization	98,859	100,253
Net property, plant and equipment	60,646	79,590	$ 78,752
Depreciation	13,400	12,200	$ 11,400
Property, plant and equipment, impairment charge of ALD assets	3,300
Land
Property, Plant and Equipment, net
Gross property, plant and equipment	5,669	9,592
Building and improvements
Property, Plant and Equipment, net
Gross property, plant and equipment	$ 50,814	54,622
Building and improvements | Minimum
Property, Plant and Equipment, net
Average useful lives	10 years
Building and improvements | Maximum
Property, Plant and Equipment, net
Average useful lives	40 years
Machinery and equipment
Property, Plant and Equipment, net
Gross property, plant and equipment	$ 99,370	110,075
Machinery and equipment | Minimum
Property, Plant and Equipment, net
Average useful lives	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment, net
Average useful lives	10 years
Leaseholds improvements
Property, Plant and Equipment, net
Gross property, plant and equipment	$ 3,652	$ 5,554
Leaseholds improvements | Minimum
Property, Plant and Equipment, net
Average useful lives	3 years
Leaseholds improvements | Maximum
Property, Plant and Equipment, net
Average useful lives	7 years