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Commitments and Contingencies (Details Textual) | 12 Months Ended
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Dec. 31, 2012
New York Office [Member] |
Lease Expiration Date | Dec. 31, 2015
California Office1 [Member] |
Lease Expiration Date | Sep. 30, 2013
California Office2 [Member] |
Lease Expiration Date | Dec. 11, 2015
California Office3 [Member] |
Lease Expiration Date | Jul. 31, 2016

X
- Definition Date which lease or group of leases is set to expire, in CCYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_LeaseExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration