Segment Reporting - Schedule of Segment Reporting (Details) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2020 USD ($) segment		Dec. 31, 2019 USD ($)		Dec. 31, 2018 USD ($)
Segment Reporting [Abstract]
Number of reportable segments (in segments) | segment										3
Segment Reporting Information [Line Items]
Interest income		$ 51,334	$ 50,612	$ 49,980	$ 52,019	$ 53,369	$ 54,300	$ 54,060	$ 52,364	$ 203,945		$ 214,093		$ 190,488
Interest expense		6,813	6,758	6,462	9,551	10,940	11,655	11,425	10,841	29,584		44,861		32,426
Net interest income		44,521	43,854	43,518	42,468	42,429	42,645	42,635	41,523	174,361	[1]	169,232	[1]	158,062	[1]
Provision for credit losses										40,794		8,511		20,310
Noninterest income		20,139	21,805	18,000	18,384	16,170	16,599	16,356	16,297	78,328		65,422		60,173
Noninterest expense										154,998		146,090		137,239
Intersegment (revenue) expense*										0		0		0
Income before income taxes		31,647	23,197	1,821	232	18,894	21,444	20,137	19,578	56,897		80,053		60,686
Income tax expense		5,773	5,078	(264)	(606)	3,384	3,782	3,669	3,499	9,981		14,334		10,143
Net income		25,874	$ 18,119	$ 2,085	$ 838	15,510	$ 17,662	$ 16,468	$ 16,079	46,916		65,719		50,543
Total assets		6,336,496				5,380,924				6,336,496		5,380,924
Net capital expenditures										3,749		2,446		3,367
Banking [Member]
Segment Reporting Information [Line Items]
Interest income										203,904		214,020		190,425
Interest expense										22,822		39,818		27,383
Net interest income	[1]									181,082		174,202		163,042
Provision for credit losses										40,794		8,511		20,310
Noninterest income										37,910		23,748		20,815
Noninterest expense										126,131		116,283		108,657
Intersegment (revenue) expense*										(1,103)		(1,204)		(1,113)
Income before income taxes										53,170		74,360		56,003
Income tax expense										9,153		13,859		9,085
Net income										44,017		60,501		46,918
Total assets		6,234,336				5,282,505				6,234,336		5,282,505
Net capital expenditures										3,646		1,886		3,091
Wealth Management [Member]
Segment Reporting Information [Line Items]
Interest income										8		41		32
Interest expense										0		0		0
Net interest income	[1]									8		41		32
Provision for credit losses										0		0		0
Noninterest income										23,814		23,946		23,179
Noninterest expense										15,720		15,799		15,398
Intersegment (revenue) expense*										627		688		612
Income before income taxes										7,475		7,500		7,201
Income tax expense										1,525		1,392		1,913
Net income										5,950		6,108		5,288
Total assets		48,646				44,591				48,646		44,591
Net capital expenditures										24		84		45
Insurance [Member]
Segment Reporting Information [Line Items]
Interest income										0		0		0
Interest expense										0		0		0
Net interest income	[1]									0		0		0
Provision for credit losses										0		0		0
Noninterest income										16,682		17,318		16,442
Noninterest expense										12,142		12,477		12,893
Intersegment (revenue) expense*										476		516		501
Income before income taxes										4,064		4,325		3,048
Income tax expense										858		443		752
Net income										3,206		3,882		2,296
Total assets		35,906				34,291				35,906		34,291
Net capital expenditures										46		104		30
Other Segments [Member]
Segment Reporting Information [Line Items]
Interest income										33		32		31
Interest expense										6,762		5,043		5,043
Net interest income	[1]									(6,729)		(5,011)		(5,012)
Provision for credit losses										0		0		0
Noninterest income										(78)		410		(263)
Noninterest expense										1,005		1,531		291
Intersegment (revenue) expense*										0		0		0
Income before income taxes										(7,812)		(6,132)		(5,566)
Income tax expense										(1,555)		(1,360)		(1,607)
Net income										(6,257)		(4,772)		(3,959)
Total assets		$ 17,608				$ 19,537				17,608		19,537
Net capital expenditures										$ 33		$ 372		$ 201

[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.