Consolidated Balance Sheet (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 13,469	$ 16,228
Marketable securities	1,656
Accounts receivable	27,297	10,577
Prepaid income taxes	5,791	5,470
Coal inventory	19,722	4,778
Parts and supply inventory	14,919	2,826
Other	1,555	291
Total current assets	84,409	40,170
Coal properties, at cost:
Land and mineral rights	118,053	26,476
Buildings and equipment	321,730	148,077
Mine development	124,435	85,333
Total coal properities, at cost	564,218	259,886
Less - accumulated DD&A	(106,608)	(77,545)
Total coal properties, net	457,610	182,341
Other assets (Note 7)	18,849	15,382
Total assets	579,585	259,199
Current liabilities:
Current portion of bank debt	21,875
Accounts payable and accrued liabilities	28,105	10,357
Total current liabilities	49,980	10,357
Long-term liabilities:
Bank debt	284,470	16,000
Deferred income taxes	41,581	43,304
Asset retirement obligations	12,074	5,290
Other	1,605	2,128
Total long-term liabilities	339,730	66,722
Total liabilities	389,710	77,079
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.10 par value, 10,000 shares authorized; none issued
Common stock, $.01 par value, 100,000 shares authorized; 28,962 and 28,751 shares outstanding, respectively	289	287
Additional paid-in capital	90,218	87,872
Retained earnings	99,003	93,582
Accumulated other comprehensive income	365	379
Total stockholders' equity	189,875	182,120
Total liabilities and stockholders' equity	579,585	259,199
Savoy [Member]
Current assets:
Total current assets	14,863	29,182
Coal properties, at cost:
Investment in subsidiaries	13,896	16,733
Other assets (Note 7)	852	260
Total assets	43,264	54,850
Long-term liabilities:
Total liabilities	10,079	16,447
Stockholders' equity:
Total liabilities and stockholders' equity	43,264	54,850
Sunrise Energy [Member]
Current assets:
Total current assets	3,580	3,109
Coal properties, at cost:
Investment in subsidiaries	4,821	4,573
Total assets	10,710	9,890
Long-term liabilities:
Total liabilities	1,080	756
Stockholders' equity:
Total liabilities and stockholders' equity	$ 10,710	$ 9,890