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Leases - Narrative (Details) $ in Millions | Dec. 31, 2024 USD ($)
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Leases [Abstract] |
Aggregate residual value at lease expiration for vehicle leases | $ 24.0

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- Definition The amount of aggregate residual value at lease expiration for vehicle leases. + References No definition available. + Details
Name: | tnc_AggregateResidualValueAtLeaseExpirationForVehicleLeases
Namespace Prefix: | tnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration