Derivatives - Summary of Changes in Fair Value (Details) - Derivative Liability - (Level 3) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	$ 5,571	$ 8,034	$ 6,776
(Gain) or loss recognized in earnings from Change in Fair Value	(4,326)	(4,591)	1,258
Initial Measurement	5,481	1,406
Reclassification to stockholder's equity		(8,460)
Balance, ending	6,726	5,571	8,034
Series B Senior Unsecured Convertible Notes
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Reclassification to stockholder's equity		(6,294)
Series C Senior Convertible Notes due 2023
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Reclassification to stockholder's equity		0
Convertible Notes Payable \| Series B Senior Unsecured Convertible Notes
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	0	2,781	6,776
(Gain) or loss recognized in earnings from Change in Fair Value	0	(3,513)	(3,995)
Initial Measurement	0	0
Balance, ending	0	0	2,781
Convertible Notes Payable \| Series C Senior Convertible Notes due 2023
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	0	0	0
(Gain) or loss recognized in earnings from Change in Fair Value	1,245	0	0
Initial Measurement	5,481	0
Balance, ending	6,726	0	0
Revolving Credit Facility \| Line of Credit
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	5,571	5,253	0
(Gain) or loss recognized in earnings from Change in Fair Value	(5,571)	(318)	5,253
Initial Measurement	0	0
Reclassification to stockholder's equity		0
Balance, ending	0	5,571	5,253
Warrant
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	0	0	0
(Gain) or loss recognized in earnings from Change in Fair Value		(760)	0
Initial Measurement		1,406
Reclassification to stockholder's equity		(2,166)
Balance, ending	$ 0	$ 0	$ 0

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy.

+ 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 (c)(3)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

+ 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 (c)(1)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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-Publisher FASB
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