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Condensed Consolidating Financial Information - Condensed Consolidating Statement of Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items] |  |  |
Net cash provided by (used in) operating activities | $ 337,843 | $ 322,179 | $ 409,873
Net cash (used in) provided by investing activities | (905,582) | (1,574,253) | (1,136,657)
Net cash provided by (used in) financing activities | 1,730,640 | 1,222,708 | 410,168
Net increase (decrease) in cash and cash equivalents | 1,162,901 | (29,366) | (316,616)
Cash and cash equivalents at beginning of period | 112,974 | 142,340 | 458,956
Cash and cash equivalents at end of period | 1,275,875 | 112,974 | 142,340
Parent |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net cash provided by (used in) operating activities | 336,330 | 344,018 | 388,177
Net cash (used in) provided by investing activities | (905,582) | (1,595,767) | (1,108,241)
Net cash provided by (used in) financing activities | 1,730,640 | 1,222,708 | 410,168
Net increase (decrease) in cash and cash equivalents | 1,161,388 | (29,041) | (309,896)
Cash and cash equivalents at beginning of period | 112,494 | 141,535 | 451,431
Cash and cash equivalents at end of period | 1,273,882 | 112,494 | 141,535
Guarantors |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net cash provided by (used in) operating activities | (9,486) | (21,839) | 21,698
Net cash (used in) provided by investing activities | (22,500) | 21,514 | (28,419)
Net cash provided by (used in) financing activities | 33,500 | 0 | 0
Net increase (decrease) in cash and cash equivalents | 1,514 | (325) | (6,721)
Cash and cash equivalents at beginning of period | 479 | 804 | 7,525
Cash and cash equivalents at end of period | 1,993 | 479 | 804
Non-Guarantor |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net cash provided by (used in) operating activities | (2) | (2) | (2)
Net cash (used in) provided by investing activities | (15,472) | (14,472) | (18,799)
Net cash provided by (used in) financing activities | 15,473 | 14,474 | 18,802
Net increase (decrease) in cash and cash equivalents | (1) | 0 | 1
Cash and cash equivalents at beginning of period | 1 | 1 | 0
Cash and cash equivalents at end of period | 0 | 1 | 1
Eliminations |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net cash provided by (used in) operating activities | 11,001 | 2 | 0
Net cash (used in) provided by investing activities | 37,972 | 14,472 | 18,802
Net cash provided by (used in) financing activities | (48,973) | (14,474) | (18,802)
Net increase (decrease) in cash and cash equivalents | 0 | 0 | 0
Cash and cash equivalents at beginning of period | 0 | 0 | 0
Cash and cash equivalents at end of period | $ 0 | $ 0 | $ 0

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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=66902209&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 + Details
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