Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current Assets:
Cash and Cash Equivalents	$ 261,569	$ 149,913
Restricted Cash - Current	43,025	32,605
Accounts and Notes Receivable
Trade Receivables, net	137,346	104,099
Other Receivables, net	11,976	11,631
Inventories	68,443	62,876
Prepaid Expenses and Other Current Assets	18,371	25,216
Total Current Assets	540,730	386,340
Property, Plant and Equipment:
Property, Plant and Equipment	5,333,733	5,250,805
Less - Accumulated Depreciation, Depletion and Amortization	3,373,966	3,272,255
Total Property, Plant and Equipment, Net	1,959,767	1,978,550
Other Assets:
Deferred Income Taxes	63,554	57,011
Right of Use Asset - Operating Leases	23,882	21,956
Restricted Cash - Non-current	8,065	15,688
Salary Retirement	49,075	38,947
Other Noncurrent Assets, net	75,413	75,025
Total Other Assets	219,989	208,627
TOTAL ASSETS	2,720,486	2,573,517
Current Liabilities:
Accounts Payable	115,004	80,343
Current Portion of Long-Term Debt	26,340	57,332
Operating Lease Liability, Current Portion	7,144	6,682
Commodity Derivatives	174,928	52,204
Other Accrued Liabilities	253,088	248,671
Total Current Liabilities	576,504	445,232
Long-Term Debt:
Long-Term Debt	461,956	568,052
Finance Lease Obligations	17,270	26,598
Total Long-Term Debt	479,226	594,650
Deferred Credits and Other Liabilities:
Postretirement Benefits Other Than Pensions	323,763	329,659
Pneumoconiosis Benefits	199,836	203,473
Asset Retirement Obligations	215,939	210,718
Workers’ Compensation	56,921	58,148
Salary Retirement Liability (Note 15)	25,739	26,013
Operating Lease Liability	16,787	15,274
Other Noncurrent Liabilities	28,177	17,537
Total Deferred Credits and Other Liabilities	867,162	860,822
TOTAL LIABILITIES	1,922,892	1,900,704
Stockholders' Equity:
Common Stock, $0.01 Par Value; 62,500,000 Shares Authorized, 34,867,738 Shares Issued and Outstanding at June 30, 2022; 34,480,181 Shares Issued and Outstanding at December 31, 2021	349	345
Capital in Excess of Par Value	646,217	646,945
Retained Earnings	402,801	280,960
Accumulated Other Comprehensive Loss	(251,773)	(255,437)
TOTAL EQUITY	797,594	672,813
TOTAL LIABILITIES AND EQUITY	$ 2,720,486	$ 2,573,517