Deerfield Obligation - Narrative (Details) - USD ($) |
3 Months Ended | 9 Months Ended | 28 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
Oct. 31, 2020 |
Jan. 31, 2021 |
Feb. 16, 2018 |
Dec. 31, 2017 |
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| Debt Instrument [Line Items] | ||||||||
| Interest (expense) income, net | $ (234,854) | $ 29,387 | $ (577,664) | $ (53,991) | ||||
| Long-term debt- current portion | 1,050,000 | 1,050,000 | $ 0 | |||||
| Deerfield Obligation | ||||||||
| Debt Instrument [Line Items] | ||||||||
| Interest (expense) income, net | 200,000 | |||||||
| Interest expense including amortization of discount and accrual of termination fee | 600,000 | |||||||
| Deerfield Obligation | 15,400,000 | 15,400,000 | ||||||
| Long-term debt- current portion | $ 1,100,000 | $ 1,100,000 | ||||||
| Scenario, Forecast | Deerfield Obligation | ||||||||
| Debt Instrument [Line Items] | ||||||||
| Periodic payment | $ 262,500 | |||||||
| Balloon payment to be paid | $ 15,250,000 | |||||||
| Level 1 | Deerfield Obligation | ||||||||
| Debt Instrument [Line Items] | ||||||||
| Long-term debt fair value | $ 15,075,000 | |||||||
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of the required periodic payments including both interest and principal payments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt. No definition available.
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The net amount of nonoperating interest income (expense). No definition available.
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. No definition available.
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