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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Current assets:    
Cash and cash equivalents $ 37,483 $ 22,791
Accounts receivable 51,060 40,203
Allowance for doubtful accounts (328) (261)
Accounts receivable, net 50,732 39,942
Inventories:    
Finished goods 24,632 21,738
Raw materials 1,671 1,573
Total inventories 26,303 23,311
Supplies, prepaid items and other:    
Prepaid insurance 8,722 11,837
Supplies 25,162 24,689
Other 8,833 8,303
Total supplies, prepaid items and other 42,717 44,829
Total current assets 157,235 130,873
Property, plant and equipment, net 928,393 936,474
Other assets:    
Operating lease assets 19,149 15,330
Intangible and other assets, net 5,374 5,812
Total other assets 24,523 21,142
Total assets 1,110,151 1,088,489
Current liabilities:    
Accounts payable 54,010 58,477
Short-term financing 6,893 9,929
Accrued and other liabilities 40,544 25,484
Current portion of long-term debt 9,665 9,410
Total current liabilities 111,112 103,300
Long-term debt, net 480,837 449,634
Noncurrent operating lease liabilities 14,506 11,404
Other noncurrent accrued and other liabilities 5,154 6,214
Deferred income taxes 35,343 35,717
Commitments and contingencies (Note 5)
Stockholders' equity:    
Common stock, $.10 par value; 75,000,000 shares authorized, 31,283,210 shares issued 3,128 3,128
Capital in excess of par value 196,972 196,833
Retained earnings 29,369 57,632
Stockholders equity including treasury stock 232,469 260,593
Less treasury stock, at cost:    
Common stock, 1,979,994 shares (2,009,566 shares at December 31, 2019) 12,974 13,266
Total stockholders' equity 219,495 247,327
Total Liabilities and Stockholders' equity 1,110,151 1,088,489
Series E Preferred Stock [Member]    
Redeemable preferred stocks:    
Redeemable preferred stock, value 243,704 234,893
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