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Restricted Cash (Details) (USD $)
Sep. 30, 2013
Cash [Member]
 
Restricted Cash and Cash Equivalents Items [Line Items]  
Restricted cash $ 400,000
Comerica Bank [Member] | New Jersey [Member]
 
Restricted Cash and Cash Equivalents Items [Line Items]  
Letters of credit outstanding, amount 57,000
Comerica Bank [Member] | Colorado [Member]
 
Restricted Cash and Cash Equivalents Items [Line Items]  
Letters of credit outstanding, amount $ 185,000