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Restricted Cash
12 Months Ended
Dec. 31, 2013
Cash and Cash Equivalents [Abstract]  
Restricted Cash
Restricted Cash

As of December 31, 2013, our cash balance of $2,294,000 included restricted cash of $242,000. The letters of credit that serve as security deposits for our leases of office space in New Jersey and Colorado (as discussed in Note 18) for $57,000 and $185,000, respectively, are secured by cash pledged as collateral and such cash is restricted by Comerica Bank. As of January 31, 2014, the letter of credit for $57,000 for our office space in New Jersey expired and therefore our restricted cash was reduced to $185,000.