Significant Accounting Policies - Schedule of Impact of CECL Adoption (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses	$ 34,196		$ 28,511	$ 27,033	$ 26,641
Reserve for Unfunded Commitments	3,400	$ 3,400
Total Reserve for Credit Losses	34,196		28,511
Decrease to Retained Earnings	161,110		156,492
Cumulative Effect, Period of Adoption, Adjustment [Member]
Accounts Notes And Loans Receivable [Line Items]
Decrease to Retained Earnings	(6,100)	6,100
ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		34,475
Reserve for Unfunded Commitments		3,386
Total Reserve for Credit Losses		37,861
ASU 2016-13 [Member] | CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		4,296
Reserve for Unfunded Commitments		3,386
Total Reserve for Credit Losses		7,682
Retained Earnings, Total Pre-tax Impact		(7,682)
Retained Earnings, Tax Effect		1,613
ASU 2016-13 [Member] | CECL Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accounts Notes And Loans Receivable [Line Items]
Decrease to Retained Earnings		(6,069)
ASU 2016-13 [Member] | PCD Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		1,668
Total Reserve for Credit Losses	1,668	1,668
Commercial and Agriculture [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses	3,316		3,011	2,584	2,600
Commercial and Agriculture [Member] | ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		3,830
Commercial and Agriculture [Member] | ASU 2016-13 [Member] | CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		429
Commercial and Agriculture [Member] | ASU 2016-13 [Member] | PCD Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		390
Commercial Real Estate Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses	5,733		4,565	4,594	4,464
Commercial Real Estate Owner Occupied [Member] | ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		5,819
Commercial Real Estate Owner Occupied [Member] | ASU 2016-13 [Member] | CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		1,075
Commercial Real Estate Owner Occupied [Member] | ASU 2016-13 [Member] | PCD Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		179
Commercial Real Estate Non Owner Occupied [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses	11,760		14,138	14,577	13,860
Commercial Real Estate Non Owner Occupied [Member] | ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		11,291
Commercial Real Estate Non Owner Occupied [Member] | ASU 2016-13 [Member] | CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		(2,847)
Residential Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses	5,934		3,145	2,612	2,597
Residential Real Estate [Member] | ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		6,293
Residential Real Estate [Member] | ASU 2016-13 [Member] | CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		2,762
Residential Real Estate [Member] | ASU 2016-13 [Member] | PCD Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		386
Real Estate Construction [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses	3,920		2,293	1,863	1,810
Real Estate Construction [Member] | ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		3,795
Real Estate Construction [Member] | ASU 2016-13 [Member] | CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		1,502
Farm Real Estate [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses	269		291	249	287
Farm Real Estate [Member] | ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		263
Farm Real Estate [Member] | ASU 2016-13 [Member] | CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		(28)
Lease Financing Receivables [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses	2,907		429
Lease Financing Receivables [Member] | ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		2,807
Lease Financing Receivables [Member] | ASU 2016-13 [Member] | CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		1,743
Lease Financing Receivables [Member] | ASU 2016-13 [Member] | PCD Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		635
Consumer and Other [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses	354		98	136	176
Consumer and Other [Member] | ASU 2016-13 [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		377
Consumer and Other [Member] | ASU 2016-13 [Member] | CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		201
Consumer and Other [Member] | ASU 2016-13 [Member] | PCD Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		78
Unallocated [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses	$ 3		$ 541	$ 418	$ 847
Unallocated [Member] | ASU 2016-13 [Member] | CECL Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Allowance for Credit Losses		$ (541)