Other Income (Notes)

9 Months Ended

Sep. 30, 2014

Component of Operating Income [Abstract]

Other Income and Other Expense Disclosure [Text Block]

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2014		2013		2014		2013
Equity in Earnings of Affiliates	$	18,284	$	3,610	$	39,796	$	20,276
Rental Income	9,731		770		35,336		2,654
Coal Contract Settlement	—		—		30,000		—
Gathering Revenue	3,636		766		24,386		5,863
Royalty Income	5,003		4,113		14,758		12,870
Right of Way Issuance	2,485		2,102		4,898		3,810
Bailey Belt Settlement	—		—		4,275		—
Interest Income	527		4,300		1,827		15,701
Business Interruption Insurance	—		2,745		—		5,445
Other	1,118		2,416		10,539		11,110
Total Other Income	$	40,784	$	20,822	$	165,815	$	77,729