Leases - Schedule of Undiscounted Cash Flows Used in Calculating the Operating Lease Liabilities and Amounts to be Received under the Sublease (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Leases [Abstract]
Operating Lease Payments, 2022	$ 6,252
Operating Lease Payments, 2023	6,436
Operating Lease Payments, 2024	6,625
Operating Lease Payments, 2025	6,820
Operating Lease Payments, 2026	7,020
Operating Lease Payments, Thereafter	21,779
Operating Lease Payments, Total undiscounted cash flows	54,932
Operating Lease Payments, Less: Amounts representing interest	(17,387)
Operating Lease Payments, Present value of lease liabilities	37,545
Sublease Receipts, 2022	2,821
Sublease Receipts, 2023	1,962
Sublease Receipts, 2024	936
Sublease Receipts, Total undiscounted cash flows	5,719
Net Operating Lease Payments, 2022	3,431
Net Operating Lease Payments, 2023	4,474
Net Operating Lease Payments, 2024	5,689
Net Operating Lease Payments, 2025	6,820
Net Operating Lease Payments, 2026	7,020
Net Operating Lease Payments, Thereafter	21,779
Net Operating Lease Payments, Total undiscounted cash flows	$ 49,213

Lessee net operating lease liability payments due.

No definition available.

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Namespace Prefix:	cdak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Lessee net operating lease liability payments due after year five.

+ References

No definition available.

+ Details

Name:	cdak_LesseeNetOperatingLeaseLiabilityPaymentsDueAfterYearFive
Namespace Prefix:	cdak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Lessee net operating lease liability payments due next twelve months.

+ References

No definition available.

+ Details

Name:	cdak_LesseeNetOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
Namespace Prefix:	cdak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Lessee net operating lease liability payments due year five.

+ References

No definition available.

+ Details

Name:	cdak_LesseeNetOperatingLeaseLiabilityPaymentsDueYearFive
Namespace Prefix:	cdak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Lessee net operating lease liability payments due year four.

+ References

No definition available.

+ Details

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Namespace Prefix:	cdak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Lessee net operating lease liability payments due year three.

+ References

No definition available.

+ Details

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Namespace Prefix:	cdak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Lessee net operating lease liability payments due year two.

+ References

No definition available.

+ Details

Name:	cdak_LesseeNetOperatingLeaseLiabilityPaymentsDueYearTwo
Namespace Prefix:	cdak_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Lessee operating sublease payments to be received.

+ References

No definition available.

+ Details

Name:	cdak_LesseeOperatingSubleasePaymentsToBeReceived
Namespace Prefix:	cdak_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Lessee operating sublease payments to be received next twelve months.

+ References

No definition available.

+ Details

Name:	cdak_LesseeOperatingSubleasePaymentsToBeReceivedNextTwelveMonths
Namespace Prefix:	cdak_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Lessee operating sublease payments to be received three years.

+ References

No definition available.

+ Details

Name:	cdak_LesseeOperatingSubleasePaymentsToBeReceivedThreeYears
Namespace Prefix:	cdak_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Lessee operating sublease payments to be received two years.

+ References

No definition available.

+ Details

Name:	cdak_LesseeOperatingSubleasePaymentsToBeReceivedTwoYears
Namespace Prefix:	cdak_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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

+ Details

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth 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

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth 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

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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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

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Name:	us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

Name:	us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Name:	us-gaap_OperatingLeaseLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant