Goodwill And Intangible Assets, Net - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Intangible Assets And Goodwill [Line Items]
Goodwill	$ 60	$ 60
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]
Intangible assets with indefinite lives	329	1,106
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets with finite lives	13,724	13,512
Total Goodwill and Intangible Assets	14,113	14,678
Interconnection [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets with finite lives	12,526	12,596
Customer Contracts [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets with finite lives	1,198	916
Emissions Allowances [Member]
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]
Intangible assets with indefinite lives	0	777
Land Use Rights [Member]
Indefinite-lived Intangible Assets (Excluding Goodwill) [Abstract]
Intangible assets with indefinite lives	$ 329	$ 329