Shareholders’ Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash dividends paid (in USD per share)	$ 0.20	$ 0.20	$ 0.40	$ 0.40
Cash dividends paid	$ 4,272	$ 4,264	$ 8,538	$ 7,715
Stock compensation expense	$ 400	$ 300	624	$ 593
Unrecognized compensation expense			$ 2,900
Unvested restricted shares (in shares)	129,448		129,448
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average remaining term on the unvested restricted shares (in years)			2 years 11 months 26 days
Executives and Directors \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, payment award, vesting period (in years)			3 years
Employee \| Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, payment award, vesting period (in years)			5 years
Employee \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, payment award, vesting period (in years)			3 years
Employee \| Maximum \| Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, payment award, vesting period (in years)			7 years
Share-Based Payment Arrangement, Executives \| Minimum \| Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, payment award, vesting period (in years)			3 years
Share-Based Payment Arrangement, Executives \| Maximum \| Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, payment award, vesting period (in years)			5 years
Share-Based Payment Arrangement, Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, payment award, vesting period (in years)			1 year

FIVE STAR BANCORP 10-Q