Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		4 Months Ended	5 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Apr. 22, 2016	Sep. 30, 2016	Sep. 30, 2015
Predecessor [Member]
Basic EPS:
Net Income (Loss)		$ (354,588)	$ 851,611		$ (1,124,532)
Income, share amounts		44,546,000	44,692,000		44,431,000
Earnings Per Share, Basic		$ (7.96)	$ 19.06		$ (25.31)
Dilutive Securities:
Dilutive RSAs		0	1,005,000		0
Dilutive RSUs		0	0		0
Dilutive Stock Options		0	0		0
Diluted EPS:
Net Income (Loss) Available to Common Stockholders, Diluted		$ (354,588)	$ 851,611		$ (1,124,532)
Weighted Average Number of Shares Outstanding, Diluted		44,546,000	45,697,000		44,431,000
Earnings Per Share, Diluted		$ (7.96)	$ 18.64		$ (25.31)
Predecessor [Member] | Restricted Stock Units (RSUs) [Member]
Earnings Per Share (Textual)
Antidilutive shares excluded from EPS, shares		1,200,000	800,000
Predecessor [Member] | Restricted Stock [Member]
Earnings Per Share (Textual)
Antidilutive shares excluded from EPS, shares		1,000,000	300,000		800,000
Predecessor [Member] | Stock Options [Member]
Earnings Per Share (Textual)
Antidilutive shares excluded from EPS, shares		1,300,000	1,300,000		1,300,000
Successor [Member]
Basic EPS:
Net Income (Loss)	$ 394			$ (149,207)
Income, share amounts	10,000,000			10,000,000
Earnings Per Share, Basic	$ 0.04			$ (14.92)
Dilutive Securities:
Dilutive RSAs	0			0
Dilutive RSUs	255,000			0
Dilutive Stock Options	106,000			0
Diluted EPS:
Net Income (Loss) Available to Common Stockholders, Diluted	$ 394			$ (149,207)
Weighted Average Number of Shares Outstanding, Diluted	10,361,000			10,000,000
Earnings Per Share, Diluted	$ 0.04			$ (14.92)