Stockholders' Equity - Shares Issued Pursuant To Cashless Exercise (Details)

Stockholders' Equity - Shares Issued Pursuant To Cashless Exercise (Details) - $ / shares									12 Months Ended
	Apr. 11, 2017	Apr. 03, 2017	Mar. 20, 2017	Mar. 17, 2017	Feb. 16, 2017	Feb. 15, 2017	Feb. 13, 2017	Feb. 10, 2017	Dec. 31, 2017	Dec. 31, 2018	Jun. 07, 2016	May 24, 2016
Class of Stock [Line Items]
Share Price (in dollars per share)												$ 11.39
Warrant Exercise Price (in dollars per share)										$ 6.00
Consulting Warrants (in shares)
Class of Stock [Line Items]
Share Price (in dollars per share)					$ 16.768
Warrant Exercise Price (in dollars per share)					$ 6.00
Number of warrants exercised					35,000
Cashless exercise of warrants (in shares)					22,470
Warrant
Class of Stock [Line Items]
Share Price (in dollars per share)	$ 17.920	$ 19.148	$ 20.304	$ 20.262			$ 13.062				$ 12.16
Warrant Exercise Price (in dollars per share)	$ 6.00	$ 0.0034375	$ 3.00	$ 6.00			$ 3.00				$ 6.00
Number of warrants exercised	12,500	43,636	226,068	2,500			25,119		1,461,744		30,000
Cashless exercise of warrants (in shares)	8,315	43,628	192,666				19,349
Cash exercise of warrants (in shares)				2,500
Cash and cashless exercise of warrants (in shares)									1,175,796
Liquid Patent Consulting, LLC \| Consulting Warrants (in shares)
Class of Stock [Line Items]
Share Price (in dollars per share)								$ 11.016
Warrant Exercise Price (in dollars per share)								$ 0.0034375
Number of warrants exercised								392,728
Cashless exercise of warrants (in shares)								392,605
IPO \| Warrant
Class of Stock [Line Items]
Share Price (in dollars per share)			$ 20.304			$ 16.768	$ 13.062
Warrant Exercise Price (in dollars per share)			$ 6.00			$ 6.00	$ 6.00
Number of warrants exercised			586,596			65,177	72,420
Cashless exercise of warrants (in shares)			413,253			41,856	39,154

Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Shares Issued Pursuant To Cashless Exercise (Details)