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Goodwill and Other Assets: (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2012
Schedule of Other Assets | Other assets consist of the following (in thousands):
|  | December 31, |
|  | 2012 |  |  | 2011 |
Other intangible assets, net |  | $ | 98,503 |  |  | $ | 65,264 |
Other assets |  |  | 19,787 |  |  |  | 17,828 |
|  | $ | 118,290 |  |  | $ | 83,092 |

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- Definition Tabular disclosure of the carrying amounts of other assets. This disclosure includes other current assets and other noncurrent assets. + References No definition available. + Details
Name: | us-gaap_ScheduleOfOtherAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration