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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net loss $ (8,008) $ (25,678)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Unrealized loss on forward and derivative contracts 7,857 0
Unrealized gain on E.ON contingent obligation (706) (706)
Lower of cost or NRV inventory adjustment (4,102) (871)
Depreciation and amortization 42,222 42,504
Pension and other postretirement benefits 1,524 1,345
Deferred income taxes (757) (6,513)
Equity in earnings of joint ventures, net of dividends (145) (736)
Change in operating assets and liabilities:    
Accounts receivable - net (30,040) (4,829)
Due from affiliates 6,156 2,906
Inventories (16,946) 2,471
Prepaid and other current assets 3,834 12,516
Accounts payable, trade (947) (1,019)
Due to affiliates 3,604 1,560
Accrued and other current liabilities (4,447) (485)
Other - net 3,994 1,138
Net cash provided by operating activities 3,093 23,603
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchase of property, plant and equipment (18,843) (7,734)
Proceeds from sale of Ravenswood 13,585 0
Restricted and other cash deposits 195 (1,878)
Net cash used in investing activities (5,063) (9,612)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Borrowings under revolving credit facilities 720 595
Repayments under revolving credit facilities (720) (595)
Issuance of common stock 240 0
Net cash provided by financing activities 240 0
CHANGE IN CASH AND CASH EQUIVALENTS (1,730) 13,991
Cash and cash equivalents, beginning of period 132,403 115,393
Cash and cash equivalents, end of period $ 130,673 $ 129,384