Restatement of Previously Issued Consolidated Financial Statements (Restatement of Balance Sheets) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Jun. 03, 2014
ASSETS
Net property and equipment	$ 1,415,025				$ 3,205,187
LIABILITIES AND STOCKHOLDERS' EQUITY
Deferred Income Taxes					483,810
As Reported [Member]
ASSETS
Total current assets		$ 79,888	$ 97,213		129,010
Net property and equipment		2,053,534	2,554,922		3,205,187
Total Other Assets		7,092	6,040		335,633
Total Assets		2,140,514	2,658,175	$ 3,377,657	3,669,830
LIABILITIES AND STOCKHOLDERS' EQUITY
Total current liabilities		328,594	336,240	332,185	325,730
Deferred Income Taxes		49,308	240,049	496,629	483,798
Other Non-Current Liabilities		1,232,210	1,238,785	1,255,457	1,260,576
Total Liabilities		1,610,112	$ 1,815,074	2,084,271	$ 2,070,104
Stockholders' equity (deficit):
Preferred stock, par value $0.001 per share
Common stock, par value $0.001 per share
Additional paid-in capital		1,599,341	$ 1,599,341	1,599,341	$ 1,599,341
Retained earnings (accumulated deficit)		(1,072,729)	(762,212)	(312,734)	6,637
Accumulated other comprehensive income		3,790	5,972	6,779	(6,252)
Total stockholders' equity (deficit)		530,402	843,101	1,293,386	1,599,726
Total liabilities and stockholders' equity (deficit)		2,140,514	2,658,175	3,377,657	3,669,830
Adjustment [Member]
ASSETS
Total current assets						$ 17,456
Net property and equipment		19,388	(7,443)			972,510
Total Assets		19,388	(7,443)			1,310,257
LIABILITIES AND STOCKHOLDERS' EQUITY
Total current liabilities						5,816
Deferred Income Taxes		6,677	(3,088)	28	12	356,827
Total Liabilities		6,677	$ (3,088)	28	$ 12	424,266
Stockholders' equity (deficit):
Preferred stock, par value $0.001 per share
Common stock, par value $0.001 per share						(41)
Additional paid-in capital						965,497
Retained earnings (accumulated deficit)		16,501	$ 1,617	6,751	$ (6,264)	(118,259)
Accumulated other comprehensive income		(3,790)	(5,972)	(6,779)	6,252
Total stockholders' equity (deficit)		12,711	(4,355)	(28)	(12)	885,991
Total liabilities and stockholders' equity (deficit)		19,388	(7,443)			1,310,257
Successor Company [Member]
ASSETS
Total current assets	80,283	79,888	97,213	108,602	129,010	327,453
Net property and equipment	1,415,025	2,072,922	2,547,479	3,262,727	3,205,187	2,941,892
Total Other Assets		7,092	6,040		335,633
Total Assets	1,496,347	2,159,902	2,650,732	3,377,657	3,669,830	3,605,863
LIABILITIES AND STOCKHOLDERS' EQUITY
Total current liabilities	$ 333,734	328,594	336,240	332,185	325,730	360,324
Deferred Income Taxes		55,985	236,961	496,657	483,810	483,591
Other Non-Current Liabilities		1,232,210	1,238,785	1,255,457	1,260,576
Total Liabilities	$ 1,550,499	$ 1,616,789	$ 1,811,986	$ 2,084,299	$ 2,070,116	2,101,522
Stockholders' equity (deficit):
Preferred stock, par value $0.001 per share
Common stock, par value $0.001 per share
Additional paid-in capital	$ 1,599,341	$ 1,599,341	$ 1,599,341	$ 1,599,341	$ 1,599,341	1,504,341
Retained earnings (accumulated deficit)	(1,653,493)	(1,056,228)	(760,595)	(305,983)	373
Total stockholders' equity (deficit)	(54,152)	543,113	838,746	1,293,358	1,599,714	1,504,341
Total liabilities and stockholders' equity (deficit)	$ 1,496,347	$ 2,159,902	$ 2,650,732	$ 3,377,657	$ 3,669,830	$ 3,605,863