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Principles of Consolidation (Details) | Jun. 30, 2013 | Dec. 31, 2012
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Noncontrolling interest, ownership percentage by parent | 88.00% |
Noncontrolling interest, ownership percentage by noncontrolling owners | 9.00% | 9.00%

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- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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