Stockholders’ Equity - Schedule of Shares (Details)	Dec. 31, 2025 $ / shares shares
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	250,000,000
Preferred stock, shares authorized (in shares)	50,000,000
Preferred stock, par value (in dollars per share) \| $ / shares	$ 0.10
Common and preferred stock, shares authorized (in shares)	300,000,000
Class A - voting common stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	225,000,000
Common stock, par value (in dollars per share) \| $ / shares	$ 0.10
Class A - non-voting common stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)	25,000,000
Common stock, par value (in dollars per share) \| $ / shares	$ 0.10

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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+ Details

Amerant Bancorp Inc. 10-K