Condensed Consolidating Information (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Condensed Consolidating Statements of Cash Flows
Net cash provided by (used in) operating activities	$ 234,707	$ (27,247)
Net cash provided by (used in) investing activities	(31,688)	4,043
Net cash provided by (used in) financing activities	(403,400)	(29,033)
Decrease in cash and equivalents	(200,381)	(52,237)
Cash and equivalents at beginning of period	361,363	395,156
Cash and equivalents at end of period	160,982	342,919
Reportable legal entity \| Parent
Condensed Consolidating Statements of Cash Flows
Net cash provided by (used in) operating activities	100,828	9,027
Net cash provided by (used in) investing activities	(18,547)	(12,430)
Net cash provided by (used in) financing activities	(217,053)	(36,087)
Decrease in cash and equivalents	(134,772)	(39,490)
Cash and equivalents at beginning of period	265,313	320,866
Cash and equivalents at end of period	130,541	281,376
Reportable legal entity \| Guarantors
Condensed Consolidating Statements of Cash Flows
Net cash provided by (used in) operating activities	114,451	(17,195)
Net cash provided by (used in) investing activities	(12,949)	(3,997)
Net cash provided by (used in) financing activities	(166,134)	8,115
Decrease in cash and equivalents	(64,632)	(13,077)
Cash and equivalents at beginning of period	81,690	61,148
Cash and equivalents at end of period	17,058	48,071
Reportable legal entity \| Combined Non-Guarantors
Condensed Consolidating Statements of Cash Flows
Net cash provided by (used in) operating activities	9,456	(14,149)
Net cash provided by (used in) investing activities	(9,727)	(1,625)
Net cash provided by (used in) financing activities	(706)	16,104
Decrease in cash and equivalents	(977)	330
Cash and equivalents at beginning of period	14,360	13,142
Cash and equivalents at end of period	13,383	13,472
Consolidating Adjustments
Condensed Consolidating Statements of Cash Flows
Net cash provided by (used in) operating activities	9,972	(4,930)
Net cash provided by (used in) investing activities	9,535	22,095
Net cash provided by (used in) financing activities	$ (19,507)	$ (17,165)

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.

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