Parent Company Only Condensed Financial Information - Statement of Cash Flows (Details ) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities:
Net income	$ 61,606,000	$ 45,671,000	$ 47,734,000
Adjustments to reconcile net income to net cash provided by operating activities:
Stock compensation expense	1,459,000	1,156,000	962,000
Amortization of subordinated note issuance costs	146,000	146,000	144,000
Net cash provided by operating activities	72,612,000	51,786,000	38,914,000
Cash flows from investing activities:
Net cash used in investing activities	(544,109,000)	(446,744,000)	(279,278,000)
Cash flows from financing activities:
Proceeds from issuance of stock, net of issuance costs	0	80,870,000	0
Cash dividends paid	(17,085,000)	(16,243,000)	(12,943,000)
Net cash provided by financing activities	626,005,000	425,725,000	301,949,000
Net change in cash and cash equivalents	154,508,000	30,767,000	61,585,000
Parent Company
Cash flows from operating activities:
Net income	61,606,000	45,671,000	47,734,000
Adjustments to reconcile net income to net cash provided by operating activities:
Stock compensation expense	1,459,000	1,156,000	962,000
Equity in undistributed banking subsidiary income	(42,147,000)	(28,618,000)	(32,993,000)
Amortization of subordinated note issuance costs	146,000	146,000	144,000
Change in other assets	(4,178,000)	(2,418,000)	(2,319,000)
Change in accrued expenses and other liabilities	10,000	(41,000)	(132,000)
Net cash provided by operating activities	16,896,000	15,896,000	13,396,000
Cash flows from investing activities:
Investment in subsidiary	0	(80,870,000)	0
Net cash used in investing activities	0	(80,870,000)	0
Cash flows from financing activities:
Proceeds from issuance of stock, net of issuance costs	0	80,870,000	0
Cash dividends paid	(17,085,000)	(16,243,000)	(12,943,000)
Net cash provided by financing activities	(17,085,000)	64,627,000	(12,943,000)
Net change in cash and cash equivalents	(189,000)	(347,000)	453,000
Cash and cash equivalents at beginning of period	8,794,000	9,141,000	8,688,000
Cash and cash equivalents at end of period	$ 8,605,000	$ 8,794,000	$ 9,141,000

FIVE STAR BANCORP 10-K