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Commitments (Details) - Purchase Warrants [Member] - $ / shares
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]    
Balance, at beginning 678,379 1,609,309
Issued 350,000
Exercised (756,143)
Expired (524,787)
Balance, at end 678,379 678,379
Share based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Exercise Price [Roll Forward]    
Balance, at beginning $ 2.87 $ 2.66
Issued 4.19
Exercised 2.96
Expired 3.00
Balance, at end $ 2.87 $ 2.87