CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)		Total	Common Stock	Capital in Excess of Par Value	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2010		$ 595,066,000	$ 531,000	$ 355,540,000	$ 411,383,000	$ (172,388,000)
Increase (Decrease) in Stockholders' Equity
Net income (loss)		363,598,000			363,598,000
Other comprehensive income (loss), net of tax		(57,088,000)				(57,088,000)
Stock issued upon the exercise of stock options		8,920,000	3,000	8,917,000
Dividends paid, $0.27, $0.50 and $0.50 per share for the year ended 2013, 2012 and 2011, respectively		(30,042,000)			(30,042,000)
Stock based compensation		9,384,000		9,384,000
Tax effect from stock-based compensation arrangements		8,929,000		8,929,000
Issuance of common stock in connection with the Western Coal Corp. acquisition		1,224,126,000	90,000	1,224,036,000
Fair value of replacement stock options and warrants issued in connection with the Western Coal Corp. acquisition		18,844,000		18,844,000
Other		(5,220,000)		(5,220,000)
Balance at Dec. 31, 2011		2,136,517,000	624,000	1,620,430,000	744,939,000	(229,476,000)
Increase (Decrease) in Stockholders' Equity
Net income (loss)		(1,060,375,000)			(1,060,375,000)
Other comprehensive income (loss), net of tax		(41,374,000)				(41,374,000)
Stock issued upon the exercise of stock options		161,000	1,000	160,000
Dividends paid, $0.27, $0.50 and $0.50 per share for the year ended 2013, 2012 and 2011, respectively		(31,246,000)			(31,246,000)
Stock based compensation		7,437,000		7,437,000
Tax effect from stock-based compensation arrangements		217,000		217,000
Other		(766,000)			(766,000)
Balance at Dec. 31, 2012		1,010,571,000	625,000	1,628,244,000	(347,448,000)	(270,850,000)
Increase (Decrease) in Stockholders' Equity
Net income (loss)		(359,003,000)			(359,003,000)
Other comprehensive income (loss), net of tax		108,592,000				108,592,000
Stock issued upon the exercise of stock options		279,000	1,000	278,000
Dividends paid, $0.27, $0.50 and $0.50 per share for the year ended 2013, 2012 and 2011, respectively	[1]	(16,889,000)		(24,703,000)	7,814,000
Stock based compensation		10,154,000		10,154,000
Tax effect from stock-based compensation arrangements		(717,000)		(717,000)
Other		(293,000)			(293,000)
Balance at Dec. 31, 2013		$ 752,694,000	$ 626,000	$ 1,613,256,000	$ (698,930,000)	$ (162,258,000)

[1] An adjustment of $7.8 million was made to Capital in Excess of Par Value in the first quarter of 2013 to correct the classification of the dividend declared in the fourth quarter of 2012.