Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Flows from Operating Activities:
Net income	$ 107,369,000	$ 95,041,000	$ 57,518,000
Adjustments to reconcile net income to net cash provided by operating activities:
Net amortization (accretion) of premiums, discounts and deferred loan fees and costs	5,918,000	(3,981,000)	(728,000)
Depreciation and amortization	5,138,000	5,126,000	3,858,000
Amortization of intangible assets	2,351,000	868,000	1,025,000
Amortization of operating lease right-of-use assets	9,319,000	2,267,000	2,668,000
Provision (benefit) for credit losses	8,514,000	(10,896,000)	27,222,000
Stock-based compensation	5,777,000	4,073,000	2,659,000
Loans originated for sale	(57,467,000)	(56,956,000)	(113,203,000)
Proceeds from sales of loans held for sale	66,259,000	58,612,000	116,933,000
Gains on investment securities transactions, net	0	(9,000)	(1,213,000)
Gains on sales of loans held for sale	(2,765,000)	(2,264,000)	(3,322,000)
Income on bank owned life insurance	(3,124,000)	(2,550,000)	(2,657,000)
Gain on death benefits from bank owned life insurance	(855,000)	(126,000)	0
Change in fair value of equity securities	1,302,000	285,000	552,000
Gains on other real estate and other repossessed assets	(23,000)	(32,000)	(88,000)
Loss on sale of premises and equipment	872,000	281,000	77,000
Impairment of property held for sale	345,000	0	0
Long-term debt prepayment penalty	0	0	4,133,000
Long-term debt extinguishment costs	0	831,000	0
Deferred tax expense (benefit)	2,747,000	5,422,000	(6,763,000)
Excess tax benefits (deficiencies)	69,000	(89,000)	(132,000)
(Increase) decrease in other assets	(68,863,000)	36,589,000	(53,982,000)
Increase (decrease) in other liabilities	41,813,000	(37,389,000)	50,434,000
Net Cash Provided by Operating Activities	124,696,000	95,103,000	84,991,000
Cash Flows from Investing Activities:
Net cash acquired in acquisitions	326,236,000	0	0
Proceeds from repayments and maturities of available for sale securities	135,960,000	181,706,000	700,409,000
Proceeds from repayments and maturities of held to maturity securities	137,241,000	66,709,000	38,941,000
Proceeds from sales of equity securities	0	0	4,148,000
Proceeds from sales of available for sale securities	0	4,402,000	130,912,000
Purchase of available for sale securities	(312,904,000)	(611,589,000)	(921,343,000)
Purchase of held to maturity securities	(117,233,000)	(310,128,000)	(6,377,000)
Purchase of equity securities	(1,217,000)	(2,959,000)	(2,772,000)
Proceeds from redemptions of Federal Home Loan Bank stock	78,451,000	13,817,000	106,808,000
Purchases of Federal Home Loan Bank stock	(110,638,000)	(10,887,000)	(96,282,000)
Death benefit proceeds from bank owned life insurance	2,005,000	470,000	0
Net (increase) decrease in loans	(783,353,000)	35,945,000	(876,021,000)
Proceeds from sales of loans previously held for investment	0	21,765,000	0
Proceeds from dispositions and sales of bank premises and equipment	0	278,000	50,000
Purchases of premises and equipment	(6,432,000)	(4,851,000)	(7,539,000)
Proceeds from sales of other real estate and other repossessed assets	23,000	32,000	1,044,000
Net Cash Used in Investing Activities:	(651,861,000)	(615,290,000)	(928,022,000)
Cash Flows from Financing Activities:
Net (decrease) increase in deposits	(48,469,000)	510,077,000	1,162,206,000
Increase (decrease) in federal funds purchased and securities sold under agreements to repurchase	622,344,000	(63,107,000)	(159,098,000)
Proceeds from other borrowings	0	0	25,000,000
Repayments of other borrowings	0	0	(169,948,000)
Purchase of treasury stock	0	0	(1,452,000)
Proceeds from issuance of subordinated debt, net	0	147,738,000	0
Redemption of subordinated debentures, net	0	(88,330,000)	0
Exercise of stock options	0	19,000	0
Retirement of restricted stock	(1,956,000)	(651,000)	(501,000)
Dividends paid	(37,334,000)	(27,119,000)	(25,457,000)
Net Cash Provided by Financing Activities:	534,585,000	478,627,000	830,750,000
Net increase (decrease) in cash and cash equivalents	7,420,000	(41,560,000)	(12,281,000)
Cash and cash equivalents, beginning of year	228,530,000	270,090,000	282,371,000
Cash and cash equivalents, end of year	235,950,000	228,530,000	270,090,000
Supplemental schedule of non-cash investing and financing activities:
Cash paid during the period for income taxes	37,227,000	29,111,000	22,486,000
Cash paid during the period for interest	52,110,000	23,372,000	42,600,000
Transfer of debt securities to held to maturity at fair value	0	494,164,000	0
Transfer of loans to loans held for sale	0	21,689,000	0
Transfer of loans into other real estate owned	0	0	393,000
Right-of-use asset obtained in exchange for new operating lease liabilities	1,158,000	717,000	1,159,000
Non-cash assets acquired:
Federal Home Loan Bank stock	1,247,000	0	0
Investment securities available for sale	217,774,000	0	0
Investment securities held to maturity	124,485,000	0	0
Loans held for sale	4,620,000	0	0
Loans	1,095,266,000	0	0
Fixed assets	13,748,000	0	0
Operating lease right-of-use assets, net	12,991,000	0	0
Goodwill and other intangible assets, net	124,570,000	0	0
Bank owned life insurance	37,580,000	0	0
Other assets	8,820,000	0	0
Total non-cash assets acquired	1,641,101,000	0	0
Liabilities assumed:
Deposits	1,650,613,000	0	0
Subordinated debt	14,734,000	0	0
Operating lease liabilities	12,991,000	0	0
Other liabilities	3,257,000	0	0
Total liabilities assumed	1,681,595,000	0	0
Common stock issued for acquisitions	$ 285,742,000	$ 0	$ 0