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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Current assets    
Cash and cash equivalents $ 269,814 $ 450,781
Short term investments 203,417 200,192
Restricted cash 102,236 97,542
Trade accounts receivable (net of allowance for doubtful accounts of $7.8 million for both periods, respectively. 129,087 117,405
Other receivables 15,377 18,362
Inventories 172,698 196,720
Prepaid royalties 7,737 10,022
Coal derivative assets 4,091 8,035
Other current assets 39,741 39,866
Total current assets 944,198 1,138,925
Property, plant and equipment, net 3,493,553 3,619,029
Other assets    
Prepaid royalties 20,997 23,671
Equity investments 163,772 201,877
Other noncurrent assets 62,705 58,379
Total other assets 247,474 283,927
Total assets 4,685,225 5,041,881
Liabilities not subject to compromise    
Accounts payable 78,043 128,131
Accrued expenses and other current liabilities 153,028 329,450
Current maturities of debt 0 5,042,353
Total current liabilities 231,071 5,499,934
Long-term debt 0 30,953
Asset retirement obligations 390,634 396,659
Accrued pension benefits 19,853 27,373
Accrued postretirement benefits other than pension 87,286 99,810
Accrued workers’ compensation 118,997 112,270
Other noncurrent liabilities 33,918 119,171
Total liabilities not subject to compromise 881,759 6,286,170
Liabilities subject to compromise 5,430,456 0
Total liabilities 6,312,215 6,286,170
Stockholders' deficit    
Common stock, $0.01 par value, authorized 26,000 shares, issued 21,448 shares and 21,446 shares at June 30, 2016 and December 31, 2015, respectively 2,145 2,145
Paid-in capital 3,055,646 3,054,211
Treasury stock, at cost, 152 shares at June 30, 2016 and December 31, 2015 (53,863) (53,863)
Accumulated deficit (4,627,556) (4,244,967)
Accumulated other comprehensive loss (3,362) (1,815)
Total stockholders’ deficit (1,626,990) (1,244,289)
Total liabilities and stockholders’ deficit $ 4,685,225 $ 5,041,881