Leases - Future undiscounted lease payments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
2022	$ 4,030	$ 5,762
2023	936	4,030
2024	393	936
2025	0	393
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2022	4,030	5,762
2023	936	4,030
2024	393	936
2025	0	393
Total undiscounted lease payments	9,795	11,121
Sublease Income
2022		(349)
2023		(349)
2024		(349)
2025		(204)
Total undiscounted lease payments		(1,251)
Net Lease Obligation
2022		5,413
2023		3,681
2024		587
2025		189
Total undiscounted lease payments		9,870
Total undiscounted lease payments	9,795	11,121
Less: Imputed interest	472	595
Present value of future lease payments	9,323	10,526
Operating lease liabilities, current	5,221	5,367	$ 3,536
Operating lease liabilities, noncurrent	$ 4,102	$ 5,159	$ 8,824

Lessee, Operating Lease, Net Lease Liability, Payment, Due [Abstract]

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- Definition

Lessee, Operating Lease, Net Liability, to be Paid

+ References

No definition available.

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- Definition

Lessee, Operating Lease, Net Liability, to be Paid, Year Four

+ References

No definition available.

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- Definition

Lessee, Operating Lease, Net Liability, to be Paid, Year One

+ References

No definition available.

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- Definition

Lessee, Operating Lease, Net Liability, to be Paid, Year Three

+ References

No definition available.

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- Definition

Lessee, Operating Lease, Net Liability, to be Paid, Year Two

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No definition available.

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- Definition

Lessee, Operating Lease, Sublease Income, Payment, Due [Abstract]

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No definition available.

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- Definition

Lessee, Operating Lease, Sublease Income, to be Paid, Year Four

+ References

No definition available.

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- Definition

Lessee, Operating Lease, Sublease Income, to be Paid, Year One

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Sublease Income, to be Paid, Year Three

+ References

No definition available.

+ Details

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- Definition

Lessee, Operating Lease, Sublease Income, to be Paid, Year Two

+ References

No definition available.

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- Definition

Lessee, Operating Lease, Sublease Income, Total

+ References

No definition available.

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- References

No definition available.

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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- Definition

Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

+ References

+ Details

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- References

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977

+ Details

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

+ References

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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+ Details

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