Debt (Credit Agreement Interest Expense) (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
Mar. 31, 2019 |
Mar. 31, 2018 |
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| Debt [Abstract] | ||||
| Amortization of Credit Agreement and Residual Royalty Agreement discounts | $ 1,107,622 | $ 317,747 | $ 2,265,828 | $ 317,747 |
| Accretion of Residual Royalty Agreement liability | 123,946 | 27,278 | 216,297 | 27,278 |
| Amortization of deferred issuance costs | 26,704 | 5,570 | 54,570 | 5,570 |
| Interest expense | $ 1,258,272 | $ 350,595 | $ 2,536,695 | $ 350,595 |
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- Definition Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of amortization expense attributable to debt issuance costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of amortization expense attributable to debt discount (premium) and debt issuance costs. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition Amount of the cost of borrowed funds accounted for as interest expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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