Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Advertising Expense	$ 884	$ 1,215	$ 2,949	$ 3,107
Professional Fees	1,560	1,305	5,443	4,244
Amortization of Intangible Assets	1,310	1,449	4,037	4,704
Debit card expense	1,347	1,105	3,693	3,312
Loss on Contract Termination	0	684	0	684
Business Combination, Acquisition Related Costs	1,943	0	3,674	0
Software Maintenance	2,018	1,753	5,903	5,218
Interest income
Interest and fees on loans	84,212	90,112	265,409	280,768
Interest Income, Securities, Operating, Taxable	7,792	7,218	21,603	23,006
Nontaxable interest and dividends on securities	4	9	14	27
Interest on loans held for sale	193	326	675	917
Interest on federal funds sold and short-term investments	815	254	1,654	546
Total interest and dividend income	93,016	97,919	289,355	305,264
Interest expense
Interest on deposits	1,633	5,432	6,361	23,351
Interest on borrowings	1,292	1,604	3,965	5,628
Total interest expense	2,925	7,036	10,326	28,979
Net interest income	90,091	90,883	279,029	276,285
Provision for credit losses	(10,000)	7,500	(17,500)	52,500
Net interest income after provision for credit losses	100,091	83,383	296,529	223,785
Noninterest income
Deposit account fees	4,298	3,428	11,704	11,227
Interchange and ATM fees	3,441	3,044	9,229	13,154
Investment Banking, Advisory, Brokerage, and Underwriting Fees and Commissions	9,174	7,571	26,350	21,696
Mortgage banking income	2,825	7,704	11,270	13,570
Bank Owned Life Insurance Income	1,596	1,314	4,508	3,902
Gain Realized on Life Insurance Policies	0	0	(258)	(692)
Loan level derivative income	586	2,457	875	8,918
Debt and Equity Securities, Unrealized Gain (Loss)	0	308	723	1,694
Other noninterest income	4,537	3,521	11,753	9,119
Total noninterest income	26,457	29,347	76,670	83,972
Noninterest expenses
Salaries and employee benefits	42,235	38,409	124,759	113,027
Occupancy and equipment expenses	8,564	9,273	26,543	27,863
Data processing & facilities management	1,673	1,567	5,024	4,684
FDIC assessment	980	1,034	2,805	1,537
Professional Fees	1,560	1,305	5,443	4,244
Amortization of Intangible Assets	1,310	1,449	4,037	4,704
Debit card expense	1,347	1,105	3,693	3,312
Business Combination, Acquisition Related Costs	1,943	0	3,674	0
Software Maintenance	2,018	1,753	5,903	5,218
Other noninterest expenses	9,905	8,864	30,573	31,725
Total noninterest expenses	72,419	66,658	215,403	200,105
Income before income taxes	54,129	46,072	157,796	107,652
Current Federal, State and Local, Tax Expense (Benefit)	14,122	11,199	38,506	21,126
Net income	$ 40,007	$ 34,873	$ 119,290	$ 86,526
Basic earnings per share (in dollars per share)	$ 1.21	$ 1.06	$ 3.61	$ 2.59
Diluted earnings per share (in dollars per share)	$ 1.21	$ 1.06	$ 3.61	$ 2.59
Weighted average common shares (basic) (in shares)	33,043,716	32,951,918	33,024,386	33,358,879
Common shares equivalents (in shares)	15,554	24,758	18,238	27,871
Weighted average common shares (diluted) (in shares)	33,059,270	32,976,676	33,042,624	33,386,750
Advertising Expense	$ 884	$ 1,215	$ 2,949	$ 3,107
Retained Earnings [Member]
Noninterest expenses
Net income	$ 40,007	$ 34,873	$ 119,290	$ 86,526
Cash dividends declared per common share (in dollars per share)	$ 0.48	$ 0.46	$ 1.44	$ 1.38