Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Schedule of Financial Instruments Measured at Fair Value

The financial instruments measured at fair value on a recurring basis are summarized below:

	Fair Value Measurements at December 31, 2017							Fair Value Measurements at December 31, 2016
Description	Level 1		Level 2		Level 3			Level 1		Level 2		Level 3
Murray Energy Guarantees	$	—	$	—	$	(1,040	)	$	—	$	—	$	—

Schedule of Carrying Amount and Fair Values of Financial Instruments

The carrying amounts and fair values of financial instruments for which the fair value option was not elected are as follows:

	December 31, 2017				December 31, 2016
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Cash and Cash Equivalents	$	153,979	$	153,979	$	13,311	$	13,311
Long-Term Debt	$	897,097	$	931,768	$	306,543	$	307,443