Derivative Liabilities - Fair value assumptions, derivative additional investment rights liability (Details)	1 Months Ended
	Jul. 31, 2016 $ / shares shares
Notes to Financial Statements
Underlying number of units of convertible preferred stock | shares	500
Underlying number of units of warrants | shares	33,333
Current exercise price of warrants	$ 15.00
Current conversion price of preferred stock	$ 15.00
Time to expiration	18 days
Risk-free interest rate	0.0038
Estimated volatility	0.13
Dividend	0.00%
Stock price at period end date	$ 8.00