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Business - Additional Information (Detail) $ in Millions | Jun. 30, 2019 Subsidiary Location | Aug. 10, 2018 USD ($)
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Schedule Of Description Of Company [Line Items] |  |
Number of inactive subsidiaries | Subsidiary | 1 |
Bank operated banking centers | 58 |
Bank operated trust office locations, number | 3 |
Community Bank [Member] |  |
Schedule Of Description Of Company [Line Items] |  |
Bank operated banking centers |  | 16
Total assets | $ |  | $ 4,090

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- Details
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