COMPONENTS OF COAL WORKERS’ PNEUMOCONIOSIS (CWP) AND WORKERS’ COMPENSATION NET PERIODIC BENEFIT COSTS

6 Months Ended

Jun. 30, 2018

Retirement Benefits [Abstract]

COMPONENTS OF COAL WORKERS’ PNEUMOCONIOSIS (CWP) AND WORKERS’ COMPENSATION NET PERIODIC BENEFIT COSTS

COMPONENTS OF COAL WORKERS’ PNEUMOCONIOSIS (CWP) AND WORKERS’ COMPENSATION NET PERIODIC BENEFIT COSTS:

Components of Net Periodic Benefit Cost are as follows:

	CWP												Workers' Compensation
	Three Months Ended June 30,						Six Months Ended June 30,						Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017			2018			2017			2018			2017
Service Cost	$	1,662		$	1,280		$	3,325		$	2,562		$	1,558		$	1,568		$	3,115		$	3,137
Interest Cost	1,311			1,013			2,623			2,025			571			580			1,141			1,160
Amortization of Actuarial Gain	(213		)	(1,908		)	(427		)	(3,816		)	(20		)	(149		)	(39		)	(299		)
State Administrative Fees and Insurance Bond Premiums	—			—			—			—			718			577			1,311			1,360
Net Periodic Benefit Cost	$	2,760		$	385		$	5,521		$	771		$	2,827		$	2,576		$	5,528		$	5,358