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Supplemental Cash Flow Information (Schedule Of Supplemental Cash Flow Information) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2011 Carrier Enterprise and Carrier Enterprise Northeast [Member] | Apr. 29, 2011 Carrier Enterprise and Carrier Enterprise Northeast [Member] | Dec. 31, 2009 Carrier Enterprise and Carrier Enterprise Northeast [Member] | Dec. 31, 2009 Carrier Enterprise [Member]
Supplemental Cash Flow Information [Line Items] |  |  |  |  |  |  |
Interest paid | $ 1,854 | $ 1,348 | $ 1,436 |  |  |  |
Income taxes net of refunds | 45,137 | 37,361 | 14,018 |  |  |  |
Net assets of locations contributed to Carrier Enterprise and Carrier Enterprise Northeast |  |  |  | 14,769 | 14,769 | 23,217 |
Non-cash capital contribution of inventory by noncontrolling interest |  |  | 32,000 |  |  |  |
Common and Class B common stock issued for Carrier Enterprise |  |  |  |  |  |  | $ 151,056

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