Summary of Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information

The following table sets forth a summary of the unaudited quarterly results of operations for the years ended December 31, 2019 and 2018 (in thousands, except per share data):

	Q1			Q2			Q3			Q4
2019
Revenues	$	154,870		$	162,123		$	199,469		$	195,040
Costs applicable to sales	131,650			131,948			140,952			146,631
Amortization	41,876			43,204			45,678			48,118
Gross Profit	(18,656		)	(13,029		)	12,839			291
Exploration	3,714			5,719			5,893			7,201
Other operating expenses (General and administrative, Pre-development, reclamation, and other, and Impairment of long-lived assets)	13,908			12,084			14,486			263,250
Income (loss) from continuing operations	(24,894		)	(36,764		)	(14,277		)	(270,961		)
Income (loss) from discontinued operations	5,693			—			—			—
Net income (loss)	(19,201		)	(36,764		)	(14,277		)	(270,961		)
Cash provided by (used in) operating activities	(15,846		)	26,435			41,996			39,295
Capital expenditures	27,438			20,749			30,678			20,907
Basic income (loss) per share:
Net income (loss) from continuing operations	$	(0.12	)	$	(0.18	)	$	(0.06	)	$	(1.13	)
Net income (loss) from discontinued operations	0.03			0.00			0.00			0.00
Basic	$	(0.09	)	$	(0.18	)	$	(0.06	)	$	(1.13	)
Diluted income (loss) per share:
Net income (loss) from continuing operations	$	(0.12	)	$	(0.18	)	$	(0.06	)	$	(1.13	)
Net income (loss) from discontinued operations	0.03			0.00			0.00			0.00
Diluted	$	(0.09	)	$	(0.18	)	$	(0.06	)	$	(1.13	)

	Q1		Q2			Q3			Q4
2018
Revenues	$	163,267	$	169,987		$	148,795		$	143,855
Costs applicable to sales	99,340		108,246			116,857			116,507
Amortization	30,777		29,459			31,184			37,053
Gross Profit	33,150		32,282			754			(9,705		)
Exploration	6,683		6,429			8,157			4,128
Other operating expenses (General and administrative, Pre-development, reclamation, and other, and Impairment of long-lived assets)	13,029		11,270			15,850			11,239
Income (loss) from continuing operations	691		2,930			(53,044		)	468
Income (loss) from discontinued operations	550		—			—			—
Net income (loss)	1,241		2,930			(53,044		)	468
Cash provided by (used in) operating activities	15,541		(1,294		)	5,789			72
Capital expenditures	42,345		41,165			39,472			17,805
Basic income (loss) per share:
Net income (loss) from continuing operations	$	—	$	0.02		$	(0.29	)	$	—
Net income (loss) from discontinued operations	—		—			—			—
Basic	$	—	$	0.02		$	(0.29	)	$	—
Diluted income (loss) per share:
Net income (loss) from continuing operations	$	—	$	0.02		$	(0.29	)	$	—
Net income (loss) from discontinued operations	—		—			—			—
Diluted	$	—	$	0.02		$	(0.29	)	$	—