Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Schedule of Property, Plant and Equipment

Depreciation of plant and equipment is calculated on the straight-line method over their estimated useful lives or lease terms generally as follows:

	Years
Buildings and improvements	10 to 45
Machinery and equipment	3 to 25
Leasehold improvements	Life of Lease

Property, plant and equipment consists of the following at December 31:

	December 31,
	2017		2016
Plant and Equipment	$	2,757,062	$	2,680,453
Coal Properties and Surface Lands	857,031		861,048
Airshafts	392,266		381,755
Mine Development	344,139		344,139
Advance Mining Royalties	325,855		326,000
Total Property, Plant and Equipment	4,676,353		4,593,395
Less Accumulated Depreciation, Depletion and Amortization	2,554,056		2,413,125
Total Property, Plant and Equipment, Net	$	2,122,297	$	2,180,270

Schedule of Antidilutive Securities

The table below sets forth the share-based awards that have been excluded from the computation of the diluted earnings per share because their effect would be anti-dilutive:

	For the Years Ended
	December 31,
	2017	2016	2015
Anti-Dilutive Restricted Stock Units	1,469	—	—
	1,469	—	—

Schedule of Basic and Dilutive Earnings Per Share

The computations for basic and dilutive earnings per share are as follows:

	For the Years Ended
Amounts in thousands, except per share data	December 31,
	2017		2016		2015
Numerator:
Net Income	$	82,569	$	50,450	$	317,421
Less: Net Income Attributable to Noncontrolling Interest	14,940		8,954		10,410
Net Income Attributable to CONSOL Energy Shareholders	$	67,629	$	41,496	$	307,011
Denominator:
Weighted-average shares of common stock outstanding	27,968		27,968		27,968
Effect of dilutive shares	206		—		—
Weighted-average diluted shares of common stock outstanding	28,174		27,968		27,968
Earnings Per Share:
Basic	$	2.42	$	1.48	$	10.98
Dilutive	$	2.40	$	1.48	$	10.98

Schedule of Common Stock Outstanding

Shares of common stock outstanding were as follows:

Amounts in thousands	2017	2016	2015
Balance, Beginning of Year	—	—	—
Issuance Related to Separation and Distribution (1)	27,968	—	—
Issuance Related to Stock-Based Compensation (2)	5	—	—
Balance, End of Year	27,973	—	—

(1) See Note 2 - Separation from CNX Resources Corporation for additional information.

(2) See Note 16 - Stock-Based Compensation for additional information.