Condensed Consolidated Balance Sheet Components - Capitalized Internal-Use Software (Details) - USD ($) $ in Thousands			12 Months Ended
Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Regulated Operations [Abstract]
Capitalized internal-use software	$ 4,734	$ 2,860	$ 2,860	$ 1,592
Less: Accumulated amortization	(253)	(169)	(169)	(17)
Total capitalized internal-use software	4,481	2,691	2,691	1,575
Capitalized internal-use software amortization expense	$ 84	$ 20	$ 152	$ 17

For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

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- Definition

Amount of expense for amortization of capitalized computer software costs.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
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-Topic 985
-SubTopic 20
-Section 50
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- Definition

Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

+ References

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- Definition

The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
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No definition available.

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