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Common Stock and Class B Common Stock NYSE Requirements (Details) (USD $)	Jun. 30, 2013
NYSE Listing Requirements [Line Items]
Price Per Share- NYSE Listing Requirement	$ 1
Minimum Market Capitalization- NYSE Listing	$ 50,000,000

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- Definition

Minimum Market Capitalization- NYSE Listing- Minimum market captalization for listing on the NYSE.

+ References

No definition available.

+ Details

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- Details

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- Definition

Price Per Share- NYSE Listing Requirement

+ References

No definition available.

+ Details

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Data Type:	num:perShareItemType
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Period Type:	instant