Summary of Significant Accounting Policies - Assets Held For Sale (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Assets
Total current assets	$ 0	$ 41,636,000
Liabilities
Total Debt	(170,003,000)
Disposal Group | ES
Assets
Accounts receivable (less allowance for doubtful accounts of zero and $24 at December 31, 2016 and December 31, 2015, respectively)	0	9,395,000
Allowance for doubtful accounts	0	24,000
Inventory	0	6,453,000
Deferred income taxes	0	1,246,000
Other current assets	0	3,315,000
Total current assets	0	20,409,000
Property and equipment, net of accumulated depreciation of zero and $8,509 at December 31, 2016 and December 31, 2015, respectively	0	1,941,000
Accumulated depreciation	0	8,509,000
Goodwill	0	17,772,000
Other Intangible Assets	0	1,514,000
Preliminary total assets to be sold	0	41,636,000
Liabilities
Accounts payable	0	4,836,000
Accrued liabilities	0	1,944,000
Preliminary total liabilities to be sold	$ 0	$ 6,780,000