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

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Convertible Notes, Second Jelco Note (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Sep. 07, 2015
Convertible Notes [Abstract]
Balance outstanding	$ 207,917	$ 173,289
Second Jelco Note [Member]
Convertible Notes [Abstract]
Face amount			$ 21,165
Balance outstanding	$ 21,165