Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues:
Coal sales	$ 267,337	$ 238,387
Type of revenue	felp:CoalMember	felp:CoalMember
Other revenues	$ 1,735	$ 2,339
Total revenues	269,072	240,726
Costs and expenses:
Cost of coal produced (excluding depreciation, depletion and amortization)	133,981	120,570
Cost of coal purchased	2,375	1,751
Transportation	58,834	46,443
Depreciation, depletion and amortization	46,548	51,420
Contract amortization	(1,686)	(1,420)
Accretion on asset retirement obligations	551	731
Selling, general and administrative	8,647	7,775
Other operating (income) expense, net	(67)	(648)
Operating income	19,889	14,104
Other expenses
Interest expense, net	36,710	35,673
Net loss	(16,821)	(21,569)
Net loss available to limited partner units - basic and diluted:
Net loss available to limited partner units	$ (16,821)	$ (21,569)
Weighted average limited partner units outstanding - basic and diluted:
Distributions declared per limited partner unit	$ 0.0600	$ 0.0565
Common Units
Net loss available to limited partner units - basic and diluted:
Net loss available to limited partner units	$ (7,168)	$ (9,789)
Net loss per limited partner unit - basic and diluted	$ (0.09)	$ (0.12)
Weighted average limited partner units outstanding - basic and diluted:
Weighted average limited partner units outstanding - basic and diluted	80,915	78,846
Subordinated Units
Net loss available to limited partner units - basic and diluted:
Net loss available to limited partner units	$ (9,653)	$ (11,780)
Net loss per limited partner unit - basic and diluted	$ (0.15)	$ (0.18)
Weighted average limited partner units outstanding - basic and diluted:
Weighted average limited partner units outstanding - basic and diluted	64,955	64,955