v3.7.0.1
CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Income Statement [Abstract]    
Sales $ 48,332 $ 73,277
Less:    
Freight costs 8,721 10,332
Warehousing and handling costs 2,770 2,664
Cost of goods sold 35,873 59,777
Lower-of-cost-or-market inventory adjustments 3,824 9,007
Costs associated with abnormal production and other 0 650
Gross Deficit (2,856) (9,153)
Selling and administrative 4,404 6,570
Accretion of asset retirement obligation 389 442
Restructuring expense 0 400
Care and maintenance expense 692 0
Other operating expense (income) 1,650 (104)
Operating Loss (9,991) (16,461)
Other Income (Expense)    
Interest Expense (4,421) (2,229)
Interest income 3 123
Other income 736 142
Loss Before Income Taxes (13,673) (18,425)
Income Tax (Expense) (5) (2)
Net Loss $ (13,678) $ (18,427)
Weighted Average Shares Outstanding:    
Basic (in shares) 81,992,071 75,756,535
Diluted (in shares) 81,992,071 75,756,535
(Loss) Per Share:    
Basic (in dollars per share) $ (0.17) $ (0.24)
Diluted (in dollars per share) $ (0.17) $ (0.24)