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Description of the Business - Additional Information (Detail) | 3 Months Ended
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Jun. 30, 2022 branch
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Number of branches (branch) | 12
Number of branches expected to close (branch) | 5

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- Definition Number of branches. + References No definition available. + Details
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- Definition Number of Branches Expected To Close + References No definition available. + Details
Name: | cubi_NumberOfBranchesExpectedToClose
Namespace Prefix: | cubi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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