Debt Schedule of Long-Term Debt Repayments (Details) (USD $) In Thousands | 3 Months Ended | 9 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2011 | Sep. 30, 2010 | Sep. 30, 2011 | Sep. 30, 2010 | |||||||
| Debt Instrument [Line Items] | ||||||||||
| Repayments of Long-term Debt | $ 804,304 | $ 106,524 | ||||||||
2007 Senior Secured Credit Facility [Member] | Secured Debt [Member] | Line of Credit [Member] | ||||||||||
| Debt Instrument [Line Items] | ||||||||||
| Repayments of Long-term Debt | 170,000 | [1] | 0 | [1] | 170,000 | [1] | 0 | [1] | ||
2007 Senior Secured Credit Facility [Member] | Secured Debt [Member] | ||||||||||
| Debt Instrument [Line Items] | ||||||||||
| Repayments of Long-term Debt | 351,320 | 32,643 | 406,950 | 106,524 | ||||||
2011 Senior Secured Credit Facility [Member] | Secured Debt [Member] | ||||||||||
| Debt Instrument [Line Items] | ||||||||||
| Repayments of Long-term Debt | 3,750 | 0 | 3,750 | 0 | ||||||
Secured Debt [Member] | Credit Facilities [Member] | ||||||||||
| Debt Instrument [Line Items] | ||||||||||
| Repayments of Long-term Debt | $ 525,070 | $ 32,643 | $ 580,700 | $ 106,524 | ||||||
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