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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Current assets:    
Cash and cash equivalents $ 76,010 $ 127,195
Restricted cash 106,940  
Accounts receivable, net 39,781 49,601
Inventories:    
Finished goods 11,695 19,029
Raw materials 1,554 5,428
Total inventories, net 13,249 24,457
Supplies, prepaid items and other:    
Prepaid insurance 1,680 10,563
Precious metals 9,375 12,918
Supplies 22,568 18,681
Prepaid and refundable income taxes 6,514 6,811
Other 2,323 4,701
Total supplies, prepaid items and other 42,460 53,674
Deferred income taxes 4,369 4,774
Current assets held for sale   72,996
Total current assets 282,809 332,697
Property, plant and equipment, net 1,089,845 978,709
Intangible and other, net 12,942 16,640
Noncurrent assets held for sale   33,781
Total assets 1,385,596 1,361,827
Current liabilities:    
Accounts payable 54,946 87,999
Short-term financing 919 9,119
Accrued and other liabilities 30,250 39,808
Current portion of long-term debt, net 110,495 22,468
Current liabilities held for sale   32,526
Total current liabilities 196,610 191,920
Long-term debt, net 409,090 497,954
Noncurrent accrued and other liabilities 9,356 8,786
Noncurrent liabilities held for sale   12,136
Deferred income taxes 112,556 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 193,516 192,249
Retained earnings 342,880 248,150
Stockholders equity including treasury stock 542,524 446,112
Less treasury stock, at cost:    
Common stock, 3,369,145 shares (3,735,503 shares at December 31, 2015) 22,523 24,532
Total stockholders' equity 520,001 421,580
Total Liabilities and Stockholders' equity 1,385,596 1,361,827
Series E Preferred Stock [Member]    
Redeemable preferred stocks:    
Redeemable preferred stock, value 137,983 177,272
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