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Statements of Cash Flow (Cash Flow Supplemental Disclosures) (Details) (USD $) In Thousands | 6 Months Ended
--- | ---
Jun. 30, 2011 | Jun. 30, 2010
Statements of Cash Flow [Abstract] |  |
Interest | $ 9,103 | $ 9,649
Federal income tax | $ 3,673 | $ 14,000

X
- Definition The amount of cash paid during the current period to federal authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of federal taxes. + Details
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- Definition The amount of cash paid during the current period for interest owed on money borrowed; includes amount of interest capitalized + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 29 + Details
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- Details
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