Discontinued Operations (Balance Sheet) (Details) $ in Thousands	Dec. 31, 2015 USD ($)
Current assets
Total Current assets of discontinued operations held for sale	$ 2,730
Non-current assets
Total Non-current assets of discontinued operations held for sale	6,644
Current liabilities
Total Current liabilities of discontinued operations held for sale	640
Mid-Continent Business | Held-for-sale
Current assets
Inventory	2,692
Prepaid expenses and other current assets	38
Total Current assets of discontinued operations held for sale	2,730
Non-current assets
Property, plant and equipment, net	5,203
Intangible assets, net	1,138
Deferred financing costs and other assets, net	303
Total Non-current assets of discontinued operations held for sale	6,644
Total Assets of discontinued operations held for sale	9,374
Current liabilities
Accrued liabilities	640
Total Current liabilities of discontinued operations held for sale	$ 640