Common Stock Warrants and Common Stock Warrant Liability (Details) - $ / shares		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Outstanding at beginning		610,487
Warrants issued			270,400
Warrants issued		336,531	617,154
Warrants exercised		117,733	6,667
Outstanding at end		829,285	610,487
Secured Promissory Note [Member]
Warrants issued			69,333
Date Issued			2015-04
Term	[1]		5 years
Exercise Price (in dollars per share)			$ 7.50
2014/2015 Convertible Notes [Member]
Warrants issued			131,734
Term	[1]		5 years
Exercise Price (in dollars per share)			$ 7.50
2014/2015 Convertible Notes [Member] | Maximum [Member]
Date Issued			2015-11
2014/2015 Convertible Notes [Member] | Minimum [Member]
Date Issued			2015-04
Other Promissory Notes [Member]
Warrants issued			69,333
Term	[1]		5 years
Exercise Price (in dollars per share)			$ 7.50
Other Promissory Notes [Member] | Maximum [Member]
Date Issued			2015-12
Other Promissory Notes [Member] | Minimum [Member]
Date Issued			2015-09
University of Arizona [Member]
Warrants issued			15,000
Date Issued			2015-06
Term	[2]		5 years
Exercise Price (in dollars per share)			$ 7.50
Consulting Agreement [Member]
Warrants issued			121,228
Date Issued			2015-07
Term	[3]		10 years
Exercise Price (in dollars per share)			$ 7.50
Northern Arizona University [Member]
Warrants issued			210,526
Date Issued			2015-11
Term	[4]		3 years
Exercise Price (in dollars per share)			$ 15.00
Initial Public Offering Underwriter Warrants [Member]
Warrants issued		187,500
Date Issued		2016-12
Term		5 years
Exercise Price (in dollars per share)		$ 9.60
Marketing and Development Services Warrants [Member]
Warrants issued		100,000
Date Issued		2016-02
Term	[1]	5 years
Exercise Price (in dollars per share)		$ 7.50
Other Advisory Services Warrants [Member]
Warrants issued		40,000
Date Issued		2016-08
Term	[1]	3 years
Exercise Price (in dollars per share)		$ 7.50
Promissory Notes [Member]
Warrants issued		9,031
Date Issued		2016-03
Term	[1]	3 years
Exercise Price (in dollars per share)		$ 7.50

[1] The warrants also terminate, if not exercised, upon the closing of (i) an initial public offering of common stock; or (ii) a liquidation, dissolution or winding up of the Company.

[2] In the event of a terminating change of the Company, as defined in the warrant agreement, the warrant holder would be paid in cash the aggregate fair market value of the warrant shares immediately prior to the consummation of the terminating change event.

[3] The warrant also terminates, if not exercised, (i) two years after the closing of an initial public offering of common stock; or (ii) the closing of a liquidation, dissolution or winding up of the Company.

[4] The warrant also terminates, if not exercised, upon the closing of (i) an initial public offering of common stock; or (ii) a consolidation, merger, sale or other disposition of all or substantially all of the Company's assets