Guarantor Subsidiaries Financial Information - Condensed Cash Flow Statement (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	$ (26,096)	$ 75,566
Net cash used in investing activities	(63,076)	(8,630)
Net cash provided by (used in) financing activities	(39,473)	(40,037)
Effect of changes in currency exchange rates	10,340	9,684
(Decrease) Increase in cash	(118,305)	36,583
Cash, beginning of period	398,484	226,191
Cash, end of period	280,179	262,774
Elimination
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(7,414)	(16,369)
Net cash used in investing activities	0	0
Net cash provided by (used in) financing activities	7,414	16,369
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	(8,705)	(11,340)
Net cash used in investing activities	(5,124)	(3,234)
Net cash provided by (used in) financing activities	13,835	20,229
Effect of changes in currency exchange rates	0	0
(Decrease) Increase in cash	6	5,655
Cash, beginning of period	2,522	0
Cash, end of period	2,528	5,655
Guarantors
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(5,829)	81,479
Net cash used in investing activities	(68,173)	(2,303)
Net cash provided by (used in) financing activities	71,678	(71,084)
Effect of changes in currency exchange rates	0	0
(Decrease) Increase in cash	(2,324)	8,092
Cash, beginning of period	9,496	13,157
Cash, end of period	7,172	21,249
Non-Guarantors
Condensed Financial Statements, Captions [Line Items]
Net cash (used in) provided by operating activities	(4,148)	21,796
Net cash used in investing activities	10,221	(3,093)
Net cash provided by (used in) financing activities	(132,400)	(5,551)
Effect of changes in currency exchange rates	10,340	9,684
(Decrease) Increase in cash	(115,987)	22,836
Cash, beginning of period	386,466	213,034
Cash, end of period	$ 270,479	$ 235,870

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.

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)
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6507016

Reference 5: http://www.xbrl.org/2003/role/presentationRef
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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.

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Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies.

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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.

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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.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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