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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Current assets:    
Cash and cash equivalents $ 22,836 $ 127,195
Accounts receivable, net 43,410 49,601
Inventories:    
Finished goods 15,860 19,029
Raw materials 2,930 5,428
Total inventories, net 18,790 24,457
Supplies, prepaid items and other:    
Prepaid insurance 4,470 10,563
Precious metals 10,617 12,918
Supplies 21,661 18,681
Prepaid and refundable income taxes 7,387 6,811
Other 3,192 4,701
Total supplies, prepaid items and other 47,327 53,674
Deferred income taxes 5,718 4,774
Current assets held for sale 114,468 72,996
Total current assets 252,549 332,697
Property, plant and equipment, net 1,093,609 978,709
Intangible and other, net 15,756 16,640
Noncurrent assets held for sale   33,781
Total assets 1,361,914 1,361,827
Current liabilities:    
Accounts payable 72,987 87,999
Short-term financing 3,666 9,119
Accrued and other liabilities 35,603 39,808
Revolving credit facility 30,907  
Current portion of long-term debt 15,173 22,468
Current liabilities held for sale 47,289 32,526
Total current liabilities 205,625 191,920
Long-term debt, net 513,505 497,954
Noncurrent accrued and other liabilities 9,223 8,786
Noncurrent liabilities held for sale   12,136
Deferred income taxes 31,681 52,179
Commitments and contingencies (Note 8)
Stockholders' equity:    
Common stock, $.10 par value; 75,000,000 shares authorized, 31,280,685 shares issued (27,131,724 shares at December 31, 2015) 3,128 2,713
Capital in excess of par value 192,152 192,249
Retained earnings 228,837 248,150
Stockholders equity including treasury stock 427,117 446,112
Less treasury stock, at cost:    
Common stock, 3,317,503 shares (3,735,503 shares at December 31, 2015) 21,972 24,532
Total stockholders' equity 405,145 421,580
Total Liabilities and Stockholders' equity 1,361,914 1,361,827
Series E Preferred Stock [Member]    
Redeemable preferred stocks:    
Redeemable preferred stock, value 196,735 177,272
Series B Preferred Stock [Member]    
Stockholders' equity:    
Preferred stock, value 2,000 2,000
Series D Preferred Stock [Member]    
Stockholders' equity:    
Preferred stock, value $ 1,000 $ 1,000