Condensed Consolidating Information (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Condensed Consolidating Statements of Cash Flows
Net cash provided by (used in) operating activities	$ (27,247)	$ 29,710
Net cash provided by (used in) investing activities	4,043	(11,412)
Net cash provided by (used in) financing activities	(29,033)	83,646
Increase (decrease) in cash and equivalents	(52,237)	101,944
Cash and equivalents at beginning of period	395,156	375,917
Cash and equivalents at end of period	342,919	477,861
Reportable legal entity | Parent
Condensed Consolidating Statements of Cash Flows
Net cash provided by (used in) operating activities	9,027	29,373
Net cash provided by (used in) investing activities	(12,430)	(8,837)
Net cash provided by (used in) financing activities	(36,087)	98,746
Increase (decrease) in cash and equivalents	(39,490)	119,282
Cash and equivalents at beginning of period	320,866	322,707
Cash and equivalents at end of period	281,376	441,989
Reportable legal entity | Guarantors
Condensed Consolidating Statements of Cash Flows
Net cash provided by (used in) operating activities	(17,195)	14,903
Net cash provided by (used in) investing activities	(3,997)	(11,985)
Net cash provided by (used in) financing activities	8,115	(22,047)
Increase (decrease) in cash and equivalents	(13,077)	(19,129)
Cash and equivalents at beginning of period	61,148	41,675
Cash and equivalents at end of period	48,071	22,546
Reportable legal entity | Combined Non-Guarantors
Condensed Consolidating Statements of Cash Flows
Net cash provided by (used in) operating activities	(14,149)	(17,530)
Net cash provided by (used in) investing activities	(1,625)	(6,805)
Net cash provided by (used in) financing activities	16,104	26,126
Increase (decrease) in cash and equivalents	330	1,791
Cash and equivalents at beginning of period	13,142	11,535
Cash and equivalents at end of period	13,472	13,326
Consolidating Adjustments
Condensed Consolidating Statements of Cash Flows
Net cash provided by (used in) operating activities	(4,930)	2,964
Net cash provided by (used in) investing activities	22,095	16,215
Net cash provided by (used in) financing activities	$ (17,165)	$ (19,179)