Stock Option Plans, Shares Reserved and Warrants (Details 2)	6 Months Ended
	Jun. 30, 2018 $ / shares shares
RSU [Member]
Total RSUs	1,642,212
Board of Directors [Member]
Total RSUs	350,000	[1]
Price per share at grant date | $ / shares	$ 8.46
Date of grant	May 25, 2016
Company Executives #1 [Member]
Total RSUs	950,000	[1]
Price per share at grant date | $ / shares	$ 3.50
Date of grant	Mar. 01, 2017
Company Executives #2 [Member]
Total RSUs	342,212	[2]
Price per share at grant date | $ / shares	$ 2.83
Date of grant	Feb. 21, 2018

[1] The RSUs will fully vest on the seventh anniversary of the date of grant if the recipient has provided continuous service or upon change of control or upon death or disability.

[2] The RSUs vest ratably annually over a period of three years if the recipient has provided continuous service or upon change of control or upon death or disability.