v3.5.0.2
East Dubuque Merger - Preliminary Purchase Price Allocation (Details) - East Dubuque Merger - USD ($)
3 Months Ended 9 Months Ended
Jun. 30, 2016
Sep. 30, 2016
Apr. 01, 2016
Business Acquisition [Line Items]      
Identifiable intangible assets     $ 0
Cash     35,400,000
Accounts receivable     8,900,000
Inventories     49,500,000
Prepaid expenses and other current assets     5,200,000
Property, plant and equipment     774,900,000
Other long-term assets     1,100,000
Deferred revenue     (29,800,000)
Other current liabilities     (37,000,000)
Long-term debt     (367,500,000)
Other long-term liabilities     (1,200,000)
Total fair value of net assets acquired     439,500,000
Total consideration transferred, net of cash acquired     404,100,000
Fair value of insurance proceeds     4,000,000
Proceeds from life insurance policies $ 4,000,000 $ 4,000,000  
Advisory services payable     $ 11,800,000