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Discontinued Operations - Summary of Operating Results of Discontinued Operations Reflected on Consolidated Statement of Operations (Details) - Discontinued Operations, Held-for-sale - CES - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 1,460	$ 1,477
Cost of revenue	(1,173)	(1,087)
Selling, general, and administrative	(714)	(504)
Depreciation and amortization	0	(29)
Other income (expense)	150	0
Pre-tax income (loss) from continuing operations	(277)	(143)
Provision for (benefit from) income tax	(10)	0
Net income (loss) from discontinued operations	$ (267)	$ (143)

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