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Restatement of Previously Reported Consolidated Financial Statements - Restated Condensed Statements of Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Stockholders' Equity [Abstract]
Beginning balance			$ 787,259	$ 1,865,806
Comprehensive loss	$ (4,405)	$ (9,884)	(15,322)	18,326
Ending balance	756,092	1,822,664	756,092	1,822,664
Accumulated Other Comprehensive Income (Loss)
Statement of Stockholders' Equity [Abstract]
Beginning balance			(1,570)	25,834
Comprehensive loss			(2,011)	(5,333)
Ending balance	(3,581)	20,501	(3,581)	20,501
Accumulated Deficit
Statement of Stockholders' Equity [Abstract]
Beginning balance			(2,137,738)	(1,963,605)
Comprehensive loss			(6,296)	6,851
Ending balance	$ (2,163,797)	(1,977,497)	$ (2,163,797)	(1,977,497)
As Previously Reported
Statement of Stockholders' Equity [Abstract]
Beginning balance				1,953,045
Comprehensive loss		13,237		39,945
Ending balance		1,931,522		1,931,522
As Previously Reported | Accumulated Other Comprehensive Income (Loss)
Statement of Stockholders' Equity [Abstract]
Beginning balance				15,865
Comprehensive loss				(7,616)
Ending balance		8,249		8,249
As Previously Reported | Accumulated Deficit
Statement of Stockholders' Equity [Abstract]
Beginning balance				(1,866,397)
Comprehensive loss				30,753
Ending balance		(1,856,387)		(1,856,387)
Restatement Adjustments
Statement of Stockholders' Equity [Abstract]
Beginning balance				(87,239)
Comprehensive loss		(23,121)		(21,619)
Ending balance		(108,858)		(108,858)
Restatement Adjustments | Accumulated Other Comprehensive Income (Loss)
Statement of Stockholders' Equity [Abstract]
Beginning balance				9,969
Comprehensive loss				2,283
Ending balance		12,252		12,252
Restatement Adjustments | Accumulated Deficit
Statement of Stockholders' Equity [Abstract]
Beginning balance				(97,208)
Comprehensive loss				(23,902)
Ending balance		$ (121,110)		$ (121,110)

X

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4569616-111683

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4K
-URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4591552-111686

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- Definition

Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4I
-URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4590271-111686

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4568740-111683

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4568447-111683

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