Segment Reporting - Schedule of Segment Reporting (Details)		12 Months Ended
		Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting [Abstract]
Number of reportable segments (in segments) | segment		3
Segment Reporting Information [Line Items]
Interest income		$ 209,731,000	$ 203,945,000	$ 214,093,000
Interest expense		21,348,000	29,584,000	44,861,000
Net interest income (expense)	[1]	188,383,000	174,361,000	169,232,000
(Reversal of provision) provision for credit losses		(10,132,000)	40,794,000	8,511,000
Noninterest income		83,224,000	78,328,000	65,422,000
Noninterest expense		167,409,000	154,998,000	146,090,000
Intersegment (revenue) expense*		0	0	0
Income before income taxes		114,330,000	56,897,000	80,053,000
Income tax expense		22,529,000	9,981,000	14,334,000
Net income (loss)		91,801,000	46,916,000	65,719,000
Total assets		7,122,421,000	6,336,496,000	5,380,924,000
Net capital expenditures		5,878,000	3,749,000	2,446,000
Banking [Member]
Segment Reporting Information [Line Items]
Interest income		209,695,000	203,904,000	214,020,000
Interest expense		14,199,000	22,822,000	39,818,000
Net interest income (expense)	[1]	195,496,000	181,082,000	174,202,000
(Reversal of provision) provision for credit losses		(10,132,000)	40,794,000	8,511,000
Noninterest income		38,419,000	37,910,000	23,748,000
Noninterest expense		132,257,000	126,131,000	116,283,000
Intersegment (revenue) expense*		(1,292,000)	(1,103,000)	(1,204,000)
Income before income taxes		113,082,000	53,170,000	74,360,000
Income tax expense		22,735,000	9,153,000	13,859,000
Net income (loss)		90,347,000	44,017,000	60,501,000
Total assets		7,006,420,000	6,234,336,000	5,282,505,000
Net capital expenditures		5,772,000	3,646,000	1,886,000
Wealth Management [Member]
Segment Reporting Information [Line Items]
Interest income		2,000	8,000	41,000
Interest expense		0	0	0
Net interest income (expense)	[1]	2,000	8,000	41,000
(Reversal of provision) provision for credit losses		0	0	0
Noninterest income		27,506,000	23,814,000	23,946,000
Noninterest expense		18,390,000	15,720,000	15,799,000
Intersegment (revenue) expense*		656,000	627,000	688,000
Income before income taxes		8,462,000	7,475,000	7,500,000
Income tax expense		1,755,000	1,525,000	1,392,000
Net income (loss)		6,707,000	5,950,000	6,108,000
Total assets		53,608,000	48,646,000	44,591,000
Net capital expenditures		17,000	24,000	84,000
Insurance [Member]
Segment Reporting Information [Line Items]
Interest income		0	0	0
Interest expense		0	0	0
Net interest income (expense)	[1]	0	0	0
(Reversal of provision) provision for credit losses		0	0	0
Noninterest income		16,997,000	16,682,000	17,318,000
Noninterest expense		12,971,000	12,142,000	12,477,000
Intersegment (revenue) expense*		636,000	476,000	516,000
Income before income taxes		3,390,000	4,064,000	4,325,000
Income tax expense		707,000	858,000	443,000
Net income (loss)		2,683,000	3,206,000	3,882,000
Total assets		40,649,000	35,906,000	34,291,000
Net capital expenditures		20,000	46,000	104,000
Other Segments [Member]
Segment Reporting Information [Line Items]
Interest income		34,000	33,000	32,000
Interest expense		7,149,000	6,762,000	5,043,000
Net interest income (expense)	[1]	(7,115,000)	(6,729,000)	(5,011,000)
(Reversal of provision) provision for credit losses		0	0	0
Noninterest income		302,000	(78,000)	410,000
Noninterest expense		3,791,000	1,005,000	1,531,000
Intersegment (revenue) expense*		0	0	0
Income before income taxes		(10,604,000)	(7,812,000)	(6,132,000)
Income tax expense		(2,668,000)	(1,555,000)	(1,360,000)
Net income (loss)		(7,936,000)	(6,257,000)	(4,772,000)
Total assets		21,744,000	17,608,000	19,537,000
Net capital expenditures		$ 69,000	$ 33,000	$ 372,000

[1] Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of FASB ASC 606 "Revenue from Contracts with Customers" (FASB ASC 606). Noninterest income streams that are out of scope of FASB ASC 606 include bank owned life insurance income, sales of investment securities and mortgage banking activities.