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Restricted Cash	9 Months Ended
Restricted Cash	Sep. 30, 2017
Restricted Cash and Investments [Abstract]
Restricted Cash	Restricted Cash As of September 30, 2017 and December 31, 2016, our cash balance included restricted cash of $18,000. The $18,000 letter of credit that serves as the security deposit for our lease of office space in Colorado (as discussed in Note 13) is secured by an equal amount of cash pledged as collateral and such cash is held in a restricted bank account.