Discontinued Operations Major classes of assets and liabilities of the discontinued operation (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Current assets of discontinued operations, accounts receivable		$ 16,688
Disposal Group, Including Discontinued Operation, Inventory, Current		19,353
Current assets of discontinued operations, prepaid expenses and other current assets		1,099
Current assets of discontinued operations	$ 0	37,140
Noncurrent assets of discontinued operations, goodwill		12,973
Noncurrent assets of discontinued operations, property, plant and equipment		26,979
Noncurrent assets of discontinued operations, accumulated depreciation		(20,147)
Noncurrent assets of discontinued operations	0	19,805
Current liabilities of discontinued operations, accounts payable		10,666
Current liabilities of discontinued operations, accrued and other current liabilities		492
Current liabilities of discontinued operations	$ 0	$ 11,158