Debt - Net Carrying Amount (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Debt Disclosure [Abstract]
Principal	$ 17,500
Unamortized debt discount and debt issuance costs	(3,925)
Unamortized High Trail warrant	(7,177)
Unamortized embedded derivatives	(776)
Senior Convertible Note, net	$ 5,622

Amount, after accumulated amortization, of debt discount (premium).

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Name:	us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant