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Acquisition - Additional Information (Detail) - $ / shares |  | 12 Months Ended
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Dec. 15, 2019 | Dec. 31, 2019
Business Acquisition [Line Items] |  |
Cash per share received by share holders | $ 58.00 |
Common stock shares received by shareholders | 3.05 |
Core Deposits [Member] |  |
Business Acquisition [Line Items] |  |
Amortized over an estimated useful life |  | 10 years

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- Definition Common stock shares received by shareholders. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
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Period Type: | instant

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- Details
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