Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Operating activities
Net income	$ 8,473,000	$ 16,652,000	$ 30,392,000	$ 46,746,000
Adjustments to reconcile net income to net cash from Operating activities:
Depreciation and amortization of premises and equipment			1,520,000	1,869,000
Net accretion of securities, loans, deposits, and other			(4,257,000)	(391,000)
Amortization of investment in affordable housing tax credits			846,000	778,000
Amortization of intangible assets			1,976,000	3,023,000
Amortization of right-of-use asset			3,765,000	3,858,000
Change in operating lease liabilities			(3,525,000)	(3,754,000)
Provision for credit losses	1,399,000	1,766,000	3,793,000	3,048,000
Stock-based compensation			609,000	680,000
Deferred tax benefit			395,000	72,000
Gain on sale of loans	(212,000)	(265,000)	(258,000)	(1,783,000)
Gain on sale of OREO	(190,000)	0	(190,000)	0
Gain on sale of fixed assets	(32,000)	0	(32,000)	(757,000)
Increase in cash surrender value of life insurance			(1,036,000)	(986,000)
Loans originated and purchased for sale, net			(10,236,000)	(37,612,000)
Proceeds from loans sold			14,626,000	56,480,000
Other items			21,716,000	17,000
Net cash provided by operating activities			60,104,000	71,288,000
Investing activities
Purchases			(592,177,000)	(340,226,000)
Maturities, repayments and calls			493,220,000	412,480,000
Securities held to maturity:
Maturities, repayments and calls			500,000	500,000
Purchase of other equity securities, net			(378,000)	(1,208,000)
Net increase of investment in qualified affordable housing projects			(72,000)	(133,000)
Net decrease (increase) in loans			188,856,000	(294,693,000)
Proceeds from sales of OREO			483,000	0
Net cash received in connection with a branch purchase			0	71,352,000
Proceeds from sale of fixed assets			32,000	757,000
Purchases of premises and equipment			(614,000)	(1,473,000)
Net cash provided by (used in) investing activities			89,850,000	(152,644,000)
Financing activities
Net decrease in demand deposits and savings accounts			(233,667,000)	(502,364,000)
Net increase (decrease) in time deposits			409,913,000	(5,028,000)
Proceeds from FHLB advances			80,000,000	470,000,000
Repayments of FHLB Advances			(150,000,000)	(380,000,000)
Cash dividends paid			(9,116,000)	(8,074,000)
Common stock repurchased, net of repurchased costs			0	(18,807,000)
Exercise of stock options		2,600,000	159,000	5,436,000
Net cash provided by (used in) financing activities			97,289,000	(438,837,000)
Net increase (decrease) in cash and cash equivalents			247,243,000	(520,193,000)
Cash and cash equivalents at beginning of period			83,548,000	694,372,000	$ 694,372,000
Cash and cash equivalents at end of period	$ 330,791,000	$ 174,179,000	330,791,000	174,179,000	$ 83,548,000
Cash paid during the period:
Interest paid			64,936,000	15,500,000
Taxes paid			2,829,000	19,263,000
Non-cash investing and financing activities:
Loans transfer to held for sale, net			4,194,000	12,313,000
Additions to servicing assets			186,000	727,000
Net change in unrealized holding gain on securities available for sale			(5,838,000)	(30,140,000)
Recognition of operating lease right-of-use assets			(8,267,000)	(6,172,000)
Recognition of operating lease liabilities			8,267,000	6,172,000
Acquisition:
Assets acquired, net of cash received			0	8,183,000
Liabilities assumed			0	81,790,000
Cash considerations			0	(71,040,000)
Goodwill			$ 0	$ 2,255,000