Income Taxes - Components of Income Tax Benefits (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating Loss Carryforwards [Line Items]
Deferred income tax benefit from continuing operations			$ (180)	$ (204)
Continuing Operations
Operating Loss Carryforwards [Line Items]
Deferred income tax benefit from continuing operations	$ (61)	$ (68)	(180)	(204)
Total income tax benefit from continuing operations	(61)	(50)	(173)	(130)
Continuing Operations \| Foreign
Operating Loss Carryforwards [Line Items]
Current income tax expense from continuing operations	$ 0	$ 18	$ 7	$ 74

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration