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Restricted Cash	12 Months Ended
Restricted Cash	Dec. 31, 2016
Cash and Cash Equivalents [Abstract]
Restricted Cash	Restricted Cash As of December 31, 2016, our cash balance of $1,140,000 included restricted cash of $18,000. As of December 31, 2015, our cash balance of $1,764,000 included restricted cash of $242,000. The restricted cash pertains to a letter of credit that serves as the security deposit for our lease of office space in Colorado (as discussed in Note 14), and is secured by an equal amount of cash pledged as collateral, and such cash is held in a restricted bank account.

The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify.

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