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Business Combination - Additional Information (Details) - Flagstar $ / shares in Units, $ in Millions | Dec. 01, 2022 USD ($) State Branch $ / shares
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Business Acquisition [Line Items] |
Business acquisition, share price | $ / shares | $ 4.0151
Number of branches | Branch | 158
Number of states provides home loans | State | 50
Core deposit intangibles, estimated useful life | 10 years
Bargain purchase gain | $ | $ 159

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