Inventories (Tables)

12 Months Ended

Dec. 31, 2016

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventories are summarized as follows:

	December 31
	2016		2015
Coal - NACoal	$	13,137	$	16,652
Mining supplies - NACoal	15,790		21,755
Total inventories at weighted average cost	28,927		38,407
Sourced inventories - HBB	95,008		97,511
Retail inventories - KC	33,407		29,098
Total inventories	$	157,342	$	165,016