Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 40,610	$ 61,110
Receivables:
Trade	129,652	66,196
Loan and lease receivable	11,682	0
Contractual third-party reclamation receivables	7,940	8,487
Other	3,182	5,086
Total receivables	152,456	79,769
Inventories	153,154	39,972
Deferred income taxes	6,053	5,355
Restricted investments and bond collateral	0	5,998
Other current assets	12,362	12,835
Total current assets	364,635	205,039
Property, plant and equipment:
Land and mineral rights	439,001	278,188
Plant and equipment	832,337	657,696
Gross property, plant and equipment	1,271,338	935,884
Less accumulated depreciation, depletion and amortization	485,820	445,848
Net property, plant and equipment	785,518	490,036
Loan and lease receivable	85,344	0
Advanced coal royalties	7,134	7,311
Reclamation deposits	75,911	74,921
Restricted investments and bond collateral	104,511	69,235
Contractual third-party reclamation receivables, less current portion	93,956	88,303
Investment in joint venture	33,273	0
Intangible assets, net of accumulated amortization of $14.9 million and $14.1 million at June 30, 2014 and December 31, 2013, respectively	677	1,520
Other assets	32,762	10,320
Total Assets	1,583,721	946,685
Current liabilities:
Current installments of long-term debt	42,401	44,343
Accounts payable and accrued expenses:
Trade	128,338	57,507
Interest payable	30,750	11,321
Production taxes	42,673	41,905
Workers' compensation	707	717
Postretirement medical benefits	13,955	13,955
SERP	390	390
Deferred revenue	11,561	14,068
Asset retirement obligations	31,131	23,353
Other current liabilities	11,973	5,469
Total current liabilities	313,879	213,028
Long-term debt, less current installments	790,643	295,494
Workers' compensation, less current portion	6,629	6,744
Excess of black lung benefit obligation over trust assets	9,841	8,675
Postretirement medical benefits, less current portion	271,773	270,374
Pension and SERP obligations, less current portion	22,222	24,176
Deferred revenue, less current portion	40,676	46,567
Asset retirement obligations, less current portion	358,253	256,511
Intangible liabilities, net of accumulated amortization of $13.0 million and $12.4 million at June 30, 2014 and December 31, 2013, respectively	5,072	5,606
Deferred income taxes	15,514	5,355
Other liabilities	9,864	2,034
Total liabilities	1,844,366	1,134,564
Shareholders' deficit:
Preferred stock of $1.00 par value Authorized 5,000,000 shares; Issued and outstanding 112,994 shares at June 30, 2014 and 159,960 at December 31, 2013	96	160
Common stock of $2.50 par value Authorized 30,000,000 shares; Issued and outstanding 15,075,153 shares at June 30, 2014 and 14,592,231 shares at December 31, 2013	38,173	36,479
Other paid-in capital	133,140	134,861
Accumulated other comprehensive loss	(53,615)	(63,595)
Accumulated deficit	(378,439)	(295,784)
Total shareholders’ deficit	(260,645)	(187,879)
Total Liabilities and Shareholders' Deficit	$ 1,583,721	$ 946,685