Condensed Consolidating Information (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Condensed Consolidating Financial Statements
Net cash provided by (used in) operating activities	$ 29,710	$ 21,421
Net cash used in investing activities	(11,412)	(47,419)
Financing activities
Issuance of long term debt	409,261	289,969
Repayments of long term debt	(305,691)	(283,448)
Other	(19,924)
Net cash provided by (used in) financing activities	83,646	(6,954)
Increase (decrease) in cash and equivalents	101,944	(32,952)
Cash and equivalents at beginning of period	375,917	390,761
Cash and equivalents at end of period	477,861	357,809
Parent
Condensed Consolidating Financial Statements
Net cash provided by (used in) operating activities	29,373	(31,015)
Net cash used in investing activities	(8,837)	(3,436)
Financing activities
Issuance of long term debt	400,425
Repayments of long term debt	(304,471)
Other	2,792
Net cash provided by (used in) financing activities	98,746	7,330
Increase (decrease) in cash and equivalents	119,282	(27,121)
Cash and equivalents at beginning of period	322,707	301,073
Cash and equivalents at end of period	441,989	273,952
Guarantors
Condensed Consolidating Financial Statements
Net cash provided by (used in) operating activities	14,903	58,900
Net cash used in investing activities	(11,985)	(40,889)
Financing activities
Repayments of long term debt	(1,203)
Other	(20,844)
Net cash provided by (used in) financing activities	(22,047)	(8,721)
Increase (decrease) in cash and equivalents	(19,129)	9,290
Cash and equivalents at beginning of period	41,675	58,699
Cash and equivalents at end of period	22,546	67,989
Combined Non-Guarantors
Condensed Consolidating Financial Statements
Net cash provided by (used in) operating activities	(17,530)	(7,596)
Net cash used in investing activities	(6,805)	(21,708)
Financing activities
Issuance of long term debt	23,980
Repayments of long term debt	(9,836)
Other	11,982
Net cash provided by (used in) financing activities	26,126	14,183
Increase (decrease) in cash and equivalents	1,791	(15,121)
Cash and equivalents at beginning of period	11,535	30,989
Cash and equivalents at end of period	13,326	15,868
Consolidating Adjustments
Condensed Consolidating Financial Statements
Net cash provided by (used in) operating activities	2,964	1,132
Net cash used in investing activities	16,215	18,614
Financing activities
Issuance of long term debt	(15,144)
Repayments of long term debt	9,819
Other	(13,854)
Net cash provided by (used in) financing activities	$ (19,179)	$ (19,746)

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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