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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Current assets:    
Cash and cash equivalents $ 26,048 $ 33,619
Accounts receivable 67,043 59,873
Allowance for doubtful accounts (351) (303)
Accounts receivable, net 66,692 59,570
Inventories:    
Finished goods 27,726 20,415
Raw materials 1,483 1,441
Total inventories 29,209 21,856
Supplies, prepaid items and other:    
Prepaid insurance 10,924 10,535
Supplies 24,576 27,729
Prepaid and refundable income taxes 661 1,736
Other 8,303 8,695
Total supplies, prepaid items and other 44,464 48,695
Total current assets 166,413 163,740
Property, plant and equipment, net 974,248 1,014,038
Intangible and other assets, net 7,672 11,404
Total assets 1,148,333 1,189,182
Current liabilities:    
Accounts payable 62,589 55,992
Short-term financing 8,577 8,585
Accrued and other liabilities 42,129 35,573
Current portion of long-term debt 12,518 9,146
Total current liabilities 125,813 109,296
Long-term debt, net 412,681 400,253
Noncurrent accrued and other liabilities 8,861 11,691
Deferred income taxes 56,612 54,787
Commitments and contingencies (Note 9)
Stockholders' equity:    
Common stock, $.10 par value; 75,000,000 shares authorized, 31,283,210 shares issued (31,280,685 shares at December 31, 2017) 3,128 3,128
Capital in excess of par value 198,482 193,956
Retained earnings 153,773 256,214
Stockholders equity including treasury stock 358,383 456,298
Less treasury stock, at cost:    
Common stock, 2,438,305 shares (2,662,027 shares at December 31, 2017) 16,186 18,102
Total stockholders' equity 342,197 438,196
Total Liabilities and Stockholders' equity 1,148,333 1,189,182
Series E Preferred Stock [Member]    
Redeemable preferred stocks:    
Redeemable preferred stock, value 202,169 174,959
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