Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2018

Discontinued Operations and Disposal Groups [Abstract]

Schedule of Major Classes of Assets and Liabilities

The major classes of line items constituting the pretax profit or loss for the years ended December 31, 2018, 2017 and 2016 are as follows (in thousands):

	Year ended December 31,
	2018			2017			2016
Revenue	$	12,346		$	73,065		$	93,880
COSTS AND EXPENSES
Costs applicable to sales(1)	12,269			74,074			74,166
Amortization	—			5,899			6,633
General and administrative	41			172			101
Exploration	—			23			—
Write-downs	—			3,390			—
Pre-development, reclamation, and other	265			4,664			2,808
OTHER INCOME (EXPENSE), NET
Interest expense, net of capitalized interest	(3		)	(27		)	(24		)
Other, net	(260		)	1,763			1,777
Pretax profit (loss) on discontinued operations related to major classes of pretax profit (loss)	(492		)	(13,421		)	11,925
Pretax gain on the disposal of the discontinued operation	1,525			—			—
Total pretax gain or loss on discontinued operations	1,033			(13,421		)	11,925
Income and mining tax (expense) benefit	(483		)	1,177			20,992
Income (loss) from discontinued operations	$	550		$	(12,244	)	$	32,917

(1) Excludes amortization.