Property, Plant, and Equipment and Assets Held For Sale - Assets Held For Sale (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) building	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Assets held for sale
Asset impairment charges	$ 69,520	$ 126	$ 58,170
Additional asset impairment charges			700
Property, plant and equipment, net	60,646	79,590	78,752
Proceeds from sale of assets		3,068	9,259
St. Paul, Minnesota
Assets held for sale
Increase in carrying value recorded as impairment charge			1,900
Additional asset impairment charges	$ 1,200
Asia
Assets held for sale
Asset impairment charges			$ 1,600
Proceeds from sale of assets		$ 1,000
Building | South Korea
Assets held for sale
Number of facilities listed for sale | building	2
Asset impairment charges	$ 4,500
Lab equipment
Assets held for sale
Non-cash impairment charges	6,200
Land and Buildings | St. Paul, Minnesota
Assets held for sale
Property, plant and equipment, net	$ 3,600