Business Combination, Indemnification Assets, Shares Expected To Be Retained

No definition available.

Name:	thry_BusinessCombinationIndemnificationAssetsSharesExpectedToBeRetained
Namespace Prefix:	thry_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Business Combination, Indemnification Assets, Shares Held in Escrow

+ References

No definition available.

+ Details

Name:	thry_BusinessCombinationIndemnificationAssetsSharesHeldInEscrow
Namespace Prefix:	thry_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Gain (Loss) On Remeasurement Of Indemnification Asset

+ References

No definition available.

+ Details

Name:	thry_GainLossOnRemeasurementOfIndemnificationAsset
Namespace Prefix:	thry_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Stock Issued During Period, Shares, Settlement of Indemnification Asset

+ References

No definition available.

+ Details

Name:	thry_StockIssuedDuringPeriodSharesSettlementOfIndemnificationAsset
Namespace Prefix:	thry_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Stock Issued During Period, Value, Settlement of Indemnification Asset

+ References

No definition available.

+ Details

Name:	thry_StockIssuedDuringPeriodValueSettlementOfIndemnificationAsset
Namespace Prefix:	thry_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

No definition available.

+ Details

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

- Definition

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-SubTopic 10
-Topic 820
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FairValueByAssetClassAxis=thry_IndemnificationAssetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_TreasuryStockCommonMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=thry_YPHoldingsIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Jun. 22, 2023	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Jun. 30, 2017
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Settlement of indemnification asset		$ 15,760		$ 15,760
Loss on indemnification asset		11,490	$ (487)	10,734	$ (887)
Indemnification Asset \| Fair Value, Inputs, Level 1
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of indemnification asset						$ 26,500
Treasury Stock
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Settlement of indemnification asset	$ (15,800)	$ 15,760		$ 15,760
Settlement of indemnification asset (in shares)	(613,954)	613,954		613,954
Number of shares expected to be retain by the seller (in shares)	1,190,761
YP Acquisition
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Shares held in escrow (in shares)							1,804,715