CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest income:
Interest and fees on loans		$ 141,552	$ 145,425	$ 165,519
Interest on mortgage loans held for sale		1,531	1,762	1,237
Taxable interest on debt securities		14,295	20,050	26,367
Nontaxable interest on debt securities		0	0	18
Dividends on Federal Home Loan Bank stock		436	2,240	2,855
Other interest income		181	459	1,667
Interest and dividend income		157,995	169,936	197,663
Interest expense:
Deposits		12,390	25,812	37,101
Federal Home Loan Bank advances		3,800	15,806	26,168
Junior subordinated debentures		370	641	980
Other interest expense		0	233	0
Interest expense		16,560	42,492	64,249
Net interest income (expense)	[1]	141,435	127,444	133,414
Provision for credit losses		(4,822)	12,342	1,575
Net interest income after provision for credit losses		146,257	115,102	131,839
Noninterest income:
Wealth management revenues	[1]	41,282	35,454	36,848
Mortgage banking revenues	[1]	28,626	47,377	14,795
Card interchange fees	[1]	4,996	4,287	4,214
Service charges on deposit accounts	[1]	2,683	2,742	3,684
Loan related derivative income	[1]	4,342	3,991	3,993
Income from bank-owned life insurance	[1]	2,925	2,491	2,354
Net realized losses on securities	[1]	0	0	(53)
Other income	[1]	2,540	3,100	1,245
Noninterest income	[1]	87,394	99,442	67,080
Noninterest expense:
Salaries and employee benefits		87,295	82,899	72,761
Outsourced services		13,296	11,894	10,598
Net occupancy		8,449	8,023	7,821
Equipment		3,905	3,831	4,081
Legal, audit and professional fees		2,859	3,747	2,535
FDIC deposit insurance costs		1,592	1,818	618
Advertising and promotion		1,843	1,469	1,534
Amortization of intangibles		890	914	943
Debt prepayment penalties		6,930	1,413	0
Other expenses		8,405	9,376	9,849
Noninterest expense		135,464	125,384	110,740
Income before income taxes		98,187	89,160	88,179
Income tax expense		21,317	19,331	19,061
Net income		76,870	69,829	69,118
Net income available to common shareholders		$ 76,648	$ 69,678	$ 68,979
Weighted average common shares outstanding - basic		17,310	17,282	17,331
Weighted average common shares outstanding - diluted		17,455	17,402	17,414
Per share information:
Basic earnings per common share (in dollars per share)		$ 4.43	$ 4.03	$ 3.98
Diluted earnings per common share (in dollars per share)		$ 4.39	$ 4.00	$ 3.96

[1] As reported in the Consolidated Statements of Income.