Quarterly report pursuant to Section 13 or 15(d)

Incentive and Non-statutory Stock Option Plan - Summary of Unvested Stock Grants Awarded as Compensation (Details)

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Incentive and Non-statutory Stock Option Plan - Summary of Unvested Stock Grants Awarded as Compensation (Details) - $ / shares
3 Months Ended 12 Months Ended
Sep. 30, 2017
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Number of shares, Unvested beginning balance 420,199 630,228
Number of shares, Granted   222,146
Number of shares, Forfeited / Cancelled   (5,000)
Number of shares, Vested (71,971) (427,175)
Number of shares, Unvested ending balance 348,228 420,199
Weighted Average Grant Date Fair Value, Unvested beginning balance $ 6.07 $ 6.07
Weighted Average Grant Date Fair Value, Granted   5.92
Weighted Average Grant Date Fair Value, Forfeited / Cancelled   5.55
Weighted Average Grant Date Fair Value, Vested 5.90 5.90
Weighted Average Grant Date Fair Value, Unvested ending balance $ 6.16 $ 6.07