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Organization and Basis of Presentation - Narrative (Details) - SWNB Bancorp, Inc. (“SWNB”) - Expected to close $ in Millions | 3 Months Ended
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Sep. 30, 2018 USD ($) branch
Business Acquisition [Line Items] |
Total assets of entity to be acquired | $ 411.0
Number of retail branches | branch | 6
Estimate of aggregate consideration upon acquisition | $ 76.7

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