Business Combinations - Narrative (Details) $ in Millions	Oct. 19, 2018 USD ($) branch
Business Acquisition [Line Items]
Number of branches operated \| branch	7
First Green Bancorp, Inc.
Business Acquisition [Line Items]
Percentage of common stock acquired	100.00%
Common stock portion, number of Seacoast stock for each share of stock converted (in shares)	0.7324
Goodwill recognized from acquisition, nondeductible \| $	$ 56.7

per share exchange ratio.

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- Definition

Number Of Branches

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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.

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No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other nondeductible expenses.

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