ACQUISITION - Summary of Pro Forma Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Total Revenues
As reported	$ 287,956	$ 162,499	$ 468,159	$ 323,947
Pro forma	320,761	356,962	674,378	672,735
Operating Income
As reported	(29,640)	11,975	(21,588)	17,710
Pro forma	(50,032)	17,081	(14,433)	30,105
Net loss applicable to common shareholders
As reported	(63,363)	(622)	(82,655)	(3,347)
Pro forma	$ (89,247)	$ (4,167)	$ (97,509)	$ (9,131)
Net loss per share applicable to common shareholders
As reported (in USD per share)	$ (4.19)	$ (0.04)	$ (5.52)	$ (0.23)
Pro forma (in USD per share)	$ (5.90)	$ (0.29)	$ (6.52)	$ (0.63)

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 45

-Paragraph 11

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Number 210

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