| Commitments (Tables) | 6 Months Ended | |||||||||||||||||||||||||
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| Jun. 30, 2012 | ||||||||||||||||||||||||||
| Commitments and Contingencies Disclosure [Abstract] | ||||||||||||||||||||||||||
| Summary of future minimum monthly rental commitments relating to the Miami Beach and San Jose leases | 
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| X | ||||||||||
| - Details 
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| X | ||||||||||
| - Details 
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