Property, Plant and Equipment (Tables)

9 Months Ended

Sep. 30, 2014

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

	September 30, 2014		December 31, 2013
Coal and Other Plant and Equipment	$	3,731,618	$	3,681,051
Intangible Drilling Cost	2,388,790		1,937,336
Proven Gas Properties	1,684,675		1,670,404
Unproven Gas Properties	1,510,307		1,463,406
Coal Properties and Surface Lands	1,411,574		1,409,408
Gas Gathering Equipment	1,082,355		1,058,008
Gas Wells and Related Equipment	850,771		688,548
Airshafts	453,689		397,466
Mine Development	416,733		354,607
Coal Advance Mining Royalties	397,015		381,348
Leased Coal Lands	388,033		388,020
Other Gas Assets	125,484		126,239
Gas Advance Royalties	22,284		22,668
Total Property Plant and Equipment	14,463,328		13,578,509
Less: Accumulated Depreciation, Depletion, and Amortization	4,499,344		4,136,247
Total Net Property, Plant, and Equipment	$	9,963,984	$	9,442,262