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Derivative Financial Instruments (Warrant Liability) (Details) - Warrant [Member]
3 Months Ended
Sep. 30, 2017
$ / shares
$ / Unit
Jun. 30, 2017
$ / shares
$ / Unit
Method used Lattice model Lattice model
Equivalent volatility 21.06% 63.13%
Equivalent interest rate 1.03% 1.13%
Floor | $ / Unit 1.15 1.15
Stock price $ 2.56 $ 2.70
Probability price less than strike price 0.00% 4.70%
Fair value of call $ 1.34 $ 1.49
Probability of fundamental transaction occuring 0.00% 0.00%