ServisFirst Bancshares, Inc. Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Note 1 - Summary of Significant Accounting Policies (Details Textual)

v3.25.4

Note 1 - Summary of Significant Accounting Policies (Details Textual)	12 Months Ended
	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Number of Reportable Segments	1
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	$ 660,076,000	$ 714,853,000
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest	0	0
Goodwill	$ 13,615,000	13,615,000
Number of Reporting Units	1
Advertising Expense	$ 1,151,000	$ 951,000	$ 768,000
Cumulative Effect, Period of Adoption, Adjustment [Member]
Increase (Decrease) in Retained Earnings	(2,300,000)
Metro Bancshares, Inc [Member]
Goodwill	$ 13,600,000
Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
Lessee, Operating Lease, Renewal Term	1 year
Minimum [Member] \| Performance Shares [Member]
Property, Plant and Equipment, Useful Life	0.00%
Maximum [Member]
Property, Plant and Equipment, Useful Life	39 years 6 months
Lessee, Operating Lease, Renewal Term	5 years
Maximum [Member] \| Performance Shares [Member]
Property, Plant and Equipment, Useful Life	150.00%

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