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Principles of Consolidation (Details)	Mar. 31, 2013	Dec. 31, 2012
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%

X

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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X

- 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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