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Guarantor Subsidiaries Financial Information - Condensed Cash Flow Statement (Details) - USD ($) $ in Thousands | 6 Months Ended
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Jun. 30, 2017 | Jun. 30, 2016
Condensed Financial Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities | $ (13,703) | $ 213,976
Net cash used in investing activities | (128,581) | (40,202)
Net cash provided by (used in) financing activities | 41,590 | (102,157)
Effect of changes in currency exchange rates | 30,732 | 5,127
(Decrease) Increase in cash | (69,962) | 76,744
Cash, beginning of period | 398,484 | 226,191
Cash, end of period | 328,522 | 302,935
Elimination |  |
Condensed Financial Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities | (16,093) | 14,008
Net cash used in investing activities | 0 | 0
Net cash provided by (used in) financing activities | 16,093 | (14,008)
Effect of changes in currency exchange rates | 0 | 0
(Decrease) Increase in cash | 0 | 0
Cash, beginning of period | 0 | 0
Cash, end of period | 0 | 0
Parent |  |
Condensed Financial Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities | (3,939) | (29,564)
Net cash used in investing activities | (8,661) | (5,445)
Net cash provided by (used in) financing activities | 12,268 | 41,157
Effect of changes in currency exchange rates | 0 | 0
(Decrease) Increase in cash | (332) | 6,148
Cash, beginning of period | 2,522 | 0
Cash, end of period | 2,190 | 6,148
Guarantors |  |
Condensed Financial Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities | 63,758 | 139,189
Net cash used in investing activities | (105,498) | (19,799)
Net cash provided by (used in) financing activities | 41,229 | (118,345)
Effect of changes in currency exchange rates | 0 | 0
(Decrease) Increase in cash | (511) | 1,045
Cash, beginning of period | 9,496 | 13,157
Cash, end of period | 8,985 | 14,202
Non-Guarantors |  |
Condensed Financial Statements, Captions [Line Items] |  |
Net cash (used in) provided by operating activities | (57,429) | 90,343
Net cash used in investing activities | (14,422) | (14,958)
Net cash provided by (used in) financing activities | (28,000) | (10,961)
Effect of changes in currency exchange rates | 30,732 | 5,127
(Decrease) Increase in cash | (69,119) | 69,551
Cash, beginning of period | 386,466 | 213,034
Cash, end of period | $ 317,347 | $ 282,585

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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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- Definition Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the 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. Includes effect from exchange rate changes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49171198&loc=d3e33268-110906 + Details
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- Definition Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49171198&loc=d3e33268-110906 + Details
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- Definition Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3574-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 + Details
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- Definition Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3574-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 + Details
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