Derivatives - Terms and Assumptions in Valuation of Convertible Option of Notes (Details) - Series B Senior Unsecured Convertible Notes - Convertible debt - USD ($)	Dec. 31, 2019	Oct. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Term (years)	3 years 3 months 29 days	3 years 6 months
Face amount of the Notes	$ 34,405,000	$ 34,405,000
Coupon, cash	7.00%	7.00%
Coupon, PIK	8.00%	8.00%
Conversion price (in dollars per share)	$ 0.72	$ 0.72
Stock price
Derivative Instruments, Gain (Loss) [Line Items]
Measurement input	0.43	0.63
Risk free rate
Derivative Instruments, Gain (Loss) [Line Items]
Measurement input	0.016	0.015
Volatility
Derivative Instruments, Gain (Loss) [Line Items]
Measurement input	0.473	0.473

Debt Instrument, Cash Coupon Rate

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- Definition

Debt Instrument, Paid-in-Kind Coupon Rate

+ References

No definition available.

+ Details

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031898-161870

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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- Definition

Value of input used to measure debt instrument, including, but not limited to, convertible and non-convertible debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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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.

+ References

No definition available.

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