Other Accrued Liabilities

12 Months Ended

Dec. 31, 2016

Other Liabilities Disclosure [Abstract]

Accounts Payable and Accrued Liabilities Disclosure [Text Block]

NOTE 11—OTHER ACCRUED LIABILITIES:

	December 31,
	2016		2015
Gas derivatives	$	231,573	$	12,206
Subsidence liability	104,437		86,860
Royalties	44,657		38,707
Accrued interest	37,366		38,406
Accrued payroll & benefits	24,649		24,952
Accrued other taxes	20,679		10,927
Short-term incentive compensation	19,497		6,802
Deferred Revenue	18,211		11,557
Equipment leases	15,286		15,286
Other	59,025		60,052
Current portion of long-term liabilities:
Postretirement benefits other than pensions	42,001		46,105
Gas well closing	17,285		15,648
Mine closing	14,276		22,599
Workers' compensation	13,874		14,803
Pneumoconiosis benefits	10,763		9,382
Long-term disability	3,865		4,248
Salary retirement	2,904		2,772
Reclamation	—		515
Total Other Accrued Liabilities	$	680,348	$	421,827