Debt - Convertible Debt (Details) - Convertible Debt [Member] - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
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| Debt Instrument [Line Items] | ||||
| Interest expense | $ 2,191,797 | $ 2,191,797 | $ 4,383,594 | $ 4,383,594 |
| Discount Amortization | 184,728 | 184,728 | 369,456 | 369,456 |
| Deferred Debt Issuance Amortization | 12,069 | 12,069 | 24,138 | 24,138 |
| 7.00% Unsecured Convertible Senior Notes [Member] | ||||
| Debt Instrument [Line Items] | ||||
| Interest expense | $ 1,995,000 | $ 1,995,000 | $ 3,990,000 | $ 3,990,000 |
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- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. 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 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 cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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