Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2020

Revenue Recognition

Schedule of effects of revenue recognition

							Corporate,
					Other		Other and
	PRB		MET		Thermal		Eliminations		Consolidated
	(in thousands)
Year Ended December 31, 2020
North America revenues	$	659,807	$	173,508	$	112,923	$	24,424	$	970,662
Seaborne revenues		2,328		468,028		26,574		—		496,930
Total revenues	$	662,135	$	641,536	$	139,497	$	24,424	$	1,467,592
Year Ended December 31, 2019
North America revenues	$	915,750	$	217,381	$	190,051	$	10,850	$	1,334,032
Seaborne revenues		—		773,169		187,151		—		960,320
Total revenues	$	915,750	$	990,550	$	377,202	$	10,850	$	2,294,352
Year Ended December 31, 2018
North America revenues	$	971,337	$	160,969	$	195,547	$	13,034	$	1,340,887
Seaborne revenues		1,911		875,652		233,337		—		1,110,900
Total revenues	$	973,248	$	1,036,621	$	428,884	$	13,034	$	2,451,787