Business Combinations - Purchase Price (Details) - Professional Holding Corp. $ / shares in Units, shares in Thousands, $ in Thousands	Jan. 31, 2023 USD ($) $ / shares shares
Business Acquisition [Line Items]
Number of common shares outstanding (in shares) | shares	14,358
Per share exchange ratio (in shares)	0.8909
Number of shares of SBCF common stock issues (in shares) | shares	12,792
Multiplied by common stock price per share (in dollars per share) | $ / shares	$ 32.11
Value of common stock issued	$ 410,738
Payments To Acquire Fractional Shares	5
Fair value of options and warrants converted	10,304
Total purchase price	$ 421,047