Operating lease commencement date.

No definition available.

Name:	freq_OperatingLeaseCommencementDate
Namespace Prefix:	freq_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Operating lease number of additional extension terms.

+ References

No definition available.

+ Details

Name:	freq_OperatingLeaseNumberOfAdditionalExtensionTerms
Namespace Prefix:	freq_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Operating leases additional extension term.

+ References

No definition available.

+ Details

Name:	freq_OperatingLeasesAdditionalExtensionTerm
Namespace Prefix:	freq_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Date which lease or group of leases is set to expire, in YYYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_LeaseExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

+ Details

Name:	us-gaap_LesseeLeaseDescriptionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Net rentable area for properties owned.

+ References

No definition available.

+ Details

Name:	us-gaap_NetRentableArea
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-4

+ Details

Name:	us-gaap_OperatingLeaseExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	srt_CounterpartyNameAxis=freq_HaydenLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseContractualTermAxis=freq_LexingtonLeaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TypeOfArrangementAxis=freq_LeasesTerminationAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=freq_AREMARegionNo20LLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Leases - Additional Information (Details) $ in Thousands			12 Months Ended
Leases - Additional Information (Details) $ in Thousands	Dec. 11, 2020	Jan. 07, 2020 ft² Term	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Lessee Lease Description [Line Items]
Lease expense \| $			$ 4,802	$ 4,960
Hayden LLC \| Lexington Lease
Lessee Lease Description [Line Items]
Lease expiration date		May 31, 2031
Rentable square feetspace \| ft²		61,307
Lease commencement date		Dec. 11, 2020
Number of additional lease extension terms \| Term		2
Lease extension term		5 years
Lease Termination Agreement \| ARE-MA Region No. 20, LLC
Lessee Lease Description [Line Items]
Lease expiration date	Mar. 31, 2021