Revenue Recognition

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

ASC 606-10-50-5 requires that entities disclose disaggregated revenue information in categories (such as type of good or service, geography, market, type of contract, etc.) that depict how the nature, amount, timing, and uncertainty of revenue and cash flow are affected by economic factors. ASC 606-10-55-89 explains that the extent to which an entity’s revenue is disaggregated depends on the facts and circumstances that pertain to the entity’s contracts with customers and that some entities may need to use more than one type of category to meet the objective for disaggregating revenue.

In general, the Company’s business segmentation is aligned according to the nature and economic characteristics of its coal and customer relationships and provides meaningful disaggregation of each segment’s results. The company has further disaggregated revenue between North America and Seaborne revenues which depicts the pricing and contract differences between the two. North America revenue is characterized by contracts with a term of one year or longer and typically the pricing is fixed; whereas Seaborne revenue generally is derived by spot or short term contracts with an indexed based pricing mechanism.



	PRB		MET		Other Thermal		Corporate, Other and Eliminations		Consolidated
	(in thousands)
Three Months Ended March 31, 2018
North America revenues	$	244,360	$	29,678	$	43,667	$	—	$	317,705
Seaborne revenues	1,068		208,669		47,853		—		257,590

Total revenues	$	245,428	$	238,347	$	91,520	$	—	$	575,295

Three Months Ended March 31, 2017
North America revenues	$	273,428	$	68,734	$	68,964	$	59	$	411,185
Seaborne revenues	—		156,848		32,942		—		189,790

Total revenues	$	273,428	$	225,582	$	101,906	$	59	$	600,975

As of March 31, 2018, the Company has outstanding performance obligations for the remainder of 2018 of 51.4 million tons of fixed price contracts and 4.0 million tons of variable price contracts. Additionally, the Company has outstanding performance obligations beyond 2018 of approximately 48.6 million tons of fixed price contracts and 6.4 million tons of variable price contracts.