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Regulations and Supervision - Additional Information (Details) - subsidiary | Dec. 31, 2022 | Dec. 31, 2021
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Equity [Abstract] |  |
Number of wholly-owned banking subsidiary | 1 | 4

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- Definition Number Of Wholly-Owned Banking Subsidiary + References No definition available. + Details
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Namespace Prefix: | tmp_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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