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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Change in Accounting Principle - Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Cash flows from operating activities: |  |  |  |
Net income | $ 15,924 | $ 8,099 | $ 28,498 | $ 8,848
Total adjustment in net income |  |  |  | (469,231)
Net cash used in operating activities |  |  | (65,178) | (460,383)
Net cash used in investing activities |  |  | (126,571) | (134,866)
Net cash provided by financing activities |  |  | 419,540 | 743,182
Net change in cash and cash equivalents |  |  | 227,791 | 147,933
Cash and cash equivalents at beginning of period |  |  | 231,199 | 110,118
Cash and cash equivalents at end of period | $ 458,990 | 258,051 | 458,990 | 258,051
As Previously Reported |  |  |  |
Cash flows from operating activities: |  |  |  |
Net income |  | 8,121 |  | 8,878
Total adjustment in net income |  |  |  | (469,261)
Net cash used in operating activities |  |  |  | (460,383)
Net cash used in investing activities |  |  |  | (134,866)
Net cash provided by financing activities |  |  |  | 743,182
Net change in cash and cash equivalents |  |  |  | 147,933
Cash and cash equivalents at beginning of period |  |  | 231,199 | 110,118
Cash and cash equivalents at end of period |  | 258,051 |  | 258,051
Effect of Change in Accounting Principle |  |  |  |
Cash flows from operating activities: |  |  |  |
Net income |  | (22) |  | (30)
Total adjustment in net income |  |  |  | 30
Net cash used in operating activities |  |  |  | 0
Net cash used in investing activities |  |  |  | 0
Net cash provided by financing activities |  |  |  | 0
Net change in cash and cash equivalents |  |  |  | 0
Cash and cash equivalents at beginning of period |  |  | $ 0 |
Cash and cash equivalents at end of period |  | $ 0 |  | $ 0

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- Definition The sum of adjustments which are added to or deducted from net income or loss, including the portion attributable to noncontrolling interest, to reflect cash provided by or used in operating activities, in accordance with the indirect cash flow method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3044-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 + Details
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