Consolidated Statement of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenue:
Coal sales		$ 339,490	$ 233,902	$ 137,436
Equity income		(1,606)	5,520	6,456
Liability entinguishment (Note 10)				4,300
Other (Note 8)		2,236	1,749	5,678
Revenue		340,120	241,171	153,870
Costs and expenses:
Operating costs and expenses		237,897	169,691	94,111
DD&A		43,942	29,262	18,585
Coal exploration costs		2,039	2,362	2,360
SG&A		12,617	12,039	7,669
Interest	[1]	16,055	9,059	1,547
Acquisition deal costs (Note 2)			8,057
Costs and expenses		312,550	230,470	124,272
Income before income taxes		27,570	10,701	29,598
Less income taxes:
Current		(14)	2,205	(266)
Deferred		7,452	(1,723)	7,441
Income taxes		7,438	482	7,175
Net income	[2]	$ 20,132	$ 10,219	$ 22,423
Net income per share: (Note 11)
Basic and diluted (in Dollars per share)		$ 0.68	$ 0.34	$ 0.78
Weighted average shares outstanding:
Basic and diluted (in Shares)		29,031	28,776	28,595
Deferred financing costs			$ 1,000
Interest expense on net change in estimated fair value of interest rate swaps		$ 159	658
Savoy [Member]
Revenue:
Equity income		(1,532)	5,272	$ 5,827
Revenue		13,075	41,583	42,248
Costs and expenses:
Costs and expenses		16,824	29,354	29,322
Less income taxes:
Net income		(3,749)	12,229	12,926
Sunrise Energy [Member]
Revenue:
Equity income		(74)	248	629
Revenue		2,284	3,203	3,399
Costs and expenses:
Costs and expenses		2,432	2,707	2,141
Less income taxes:
Net income		$ (148)	$ 496	$ 1,258

[1] Included in interest expense is the change in the estimated fair value of our interest rate swaps. Such amounts were $159 and $658 for 2015 and 2014, respectively. 2014 also includes $1 million for expensing deferred financing costs relating to our old credit agreement.

[2] *There is no material difference between net income and comprehensive income.