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Fair Value Measurements (Details Textual) (USD $)
Sep. 30, 2012
Level 1 [Member]
 
Fair Value Measurements (Textual) [Abstract]  
Cash equivalents in money market fund $ 16,500,000
Recurring [Member] | Level 2 [Member]
 
Fair Value Measurements (Textual) [Abstract]  
Assets measured at fair value 0
Recurring [Member] | Level 3 [Member]
 
Fair Value Measurements (Textual) [Abstract]  
Assets measured at fair value $ 0