XML 27 R4.htm IDEA: XBRL DOCUMENT v3.10.0.1
Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Current assets    
Cash and cash equivalents $ 264,937 $ 273,387
Short-term investments 162,797 155,846
Trade accounts receivable 200,904 172,604
Other receivables 48,926 29,771
Inventories 125,470 128,960
Other current assets 75,749 70,426
Total current assets 878,783 830,994
Property, plant and equipment    
Coal lands and mineral rights 396,125 390,920
Plant and equipment 510,683 445,407
Deferred mine development 194,363 267,063
Property, plant and equipment, gross 1,101,171 1,103,390
Less accumulated depreciation, depletion and amortization (266,343) (147,442)
Property, plant and equipment, net 834,828 955,948
Other assets    
Prepaid royalties 600 4,280
Deferred income taxes 170 22,520
Equity investments 104,676 106,107
Other noncurrent assets 68,003 59,783
Total other assets 173,449 192,690
Total assets 1,887,060 1,979,632
Current liabilities    
Accounts payable 128,024 134,137
Accrued expenses and other current liabilities 183,514 184,161
Current maturities of debt 17,797 15,783
Total current liabilities 329,335 334,081
Long-term debt 300,186 310,134
Asset retirement obligations 230,304 308,855
Accrued pension benefits 16,147 14,036
Accrued postretirement benefits other than pension 83,163 102,369
Accrued workers’ compensation 174,303 184,835
Other noncurrent liabilities 48,801 59,457
Total liabilities 1,182,239 1,313,767
Stockholders' equity    
Common stock, $0.01 par value, authorized 300,000 shares, issued 25,047 shares at December 31, 2018 and 2017, respectively 250 250
Paid-in capital 717,492 700,125
Treasury stock, 7,216 and 3,977 shares at December 31, 2018 and 2017, respectively, at cost (583,883) (302,109)
Retained earnings 527,666 247,232
Accumulated other comprehensive income 43,296 20,367
Total stockholders’ equity 704,821 665,865
Total liabilities and stockholders’ equity $ 1,887,060 $ 1,979,632