Revenue Recognition - Summary of Company's Source of Non-interest Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Non-interest income
Increase in bank-owned life insurance	$ 911	$ 757	$ 1,739	$ 2,340
Net gain (loss) on acquisitions	60		1,300
Net gain (loss) from securities transactions	(27)	(1,322)	16	(1,290)
Other
Total non-interest income	8,958	6,950	20,689	15,550
Service Charges and Fees [Member]
Non-interest income
Non-interest income	2,541	2,653	5,110	5,198
Other
Non-interest income	2,541	2,653	5,110	5,198
Debit Card Income [Member]
Non-interest income
Non-interest income	2,621	2,653	5,068	5,207
Other
Non-interest income	2,621	2,653	5,068	5,207
Mortgage Banking [Member]
Non-interest income
Non-interest income	245	213	433	301
Other
Non-interest income	245	213	433	301
Accounting Standards Update 2014-09 [Member]
Non-interest income
Increase in bank-owned life insurance	911	757	1,739	2,340
Net gain (loss) on acquisitions	60		1,300
Net gain (loss) from securities transactions	(27)	(1,322)	16	(1,290)
Other
Recovery on zero-basis purchased loans	1,028	507	4,373	513
Income (loss) from equity method investments	(28)	(56)	(87)	(111)
Other non-interest income not related to loans and deposits	2	(19)	(508)	24
Total other non-interest income	2,607	1,996	7,023	3,794
Total non-interest income	8,958	6,950	20,689	15,550
Accounting Standards Update 2014-09 [Member] | Service Charges and Fees [Member]
Non-interest income
Non-interest income	2,541	2,653	5,110	5,198
Other
Non-interest income	2,541	2,653	5,110	5,198
Accounting Standards Update 2014-09 [Member] | Debit Card Income [Member]
Non-interest income
Non-interest income	2,621	2,653	5,068	5,207
Other
Non-interest income	2,621	2,653	5,068	5,207
Accounting Standards Update 2014-09 [Member] | Mortgage Banking [Member]
Non-interest income
Non-interest income	245	213	433	301
Accounting Standards Update 2014-09 [Member] | Investment Referral Income [Member]
Non-interest income
Non-interest income	149	118	287	207
Other
Non-interest income	149	118	287	207
Accounting Standards Update 2014-09 [Member] | Trust Income [Member]
Non-interest income
Non-interest income	384	268	703	508
Other
Non-interest income	384	268	703	508
Accounting Standards Update 2014-09 [Member] | Insurance Sales Commissions [Member]
Non-interest income
Non-interest income	107	28	143	141
Other
Non-interest income	107	28	143	141
Accounting Standards Update 2014-09 [Member] | Other Non Interest Income Related To Loans and Deposits [Member]
Non-interest income
Non-interest income	965	1,150	2,112	2,512
Other
Non-interest income	$ 965	$ 1,150	$ 2,112	$ 2,512