CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
INTEREST AND DIVIDEND INCOME:
Interest and fees on loans	$ 273,220	$ 194,149	$ 157,799
Processing fees on PPP loans	3	1,889	8,737
Securities and cash and cash equivalents:
Taxable	19,279	16,672	11,680
Tax-exempt	724	871	1,125
Dividends	470	157	259
Total interest and dividend income	293,696	213,738	179,600
INTEREST EXPENSE:
Deposits	97,770	19,833	15,062
Borrowed funds and finance lease liabilities	1,802	389	23
Subordinated debentures (includes $(151), $127, and $276 accumulated other comprehensive income reclassification for change in fair value of interest rate swap agreements, respectively)	4,295	3,857	4,735
Total interest expense	103,867	24,079	19,820
NET INTEREST INCOME	189,829	189,659	159,780
PROVISION FOR CREDIT LOSS EXPENSE	5,993	8,589	6,003
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSS EXPENSE	183,836	181,070	153,777
NON-INTEREST INCOME:
Service charges on deposit accounts	7,372	7,206	6,195
Other service charges and fees	3,010	3,196	2,436
Wealth and asset management fees	7,251	7,172	6,740
Net realized gains on available-for-sale securities (includes $52, $651, and $783 accumulated other comprehensive income reclassifications for net realized gains on available-for-sale securities, respectively)	52	651	783
Net realized gains on equity securities	22	0	0
Net unrealized gains (losses) on equity securities	(409)	(1,149)	790
Mortgage banking	676	1,237	3,147
Bank owned life insurance	2,945	3,433	2,638
Card processing and interchange income	8,301	7,797	7,796
Other non-interest income	4,115	5,223	2,909
Total non-interest income	33,335	34,766	33,434
NON-INTEREST EXPENSES:
Compensation and benefits (includes $(174), $(113), and $(43) accumulated other comprehensive income reclassifications for net amortization of actuarial (gains) losses, respectively)	71,062	71,460	61,175
Net occupancy expense	14,509	13,298	12,381
Technology expense	20,202	17,041	11,723
State and local taxes	4,126	4,078	4,057
Legal, professional and examination fees	4,414	4,173	3,517
Advertising	3,133	2,887	2,081
FDIC insurance	3,879	2,796	2,509
Card processing and interchange expenses	5,025	4,801	3,836
Other non-interest expenses	18,992	17,088	15,154
Total non-interest expenses	145,342	137,622	116,433
INCOME BEFORE INCOME TAXES	71,829	78,214	70,778
INCOME TAX EXPENSE (includes $79, $134, and $116 income tax expense reclassification items, respectively)	13,809	15,026	13,071
NET INCOME	58,020	63,188	57,707
PREFERRED STOCK DIVIDENDS	4,302	4,302	4,302
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 53,718	$ 58,886	$ 53,405
PER COMMON SHARE DATA:
Basic Earnings Per Common Share (in dollars per share)	$ 2.56	$ 3.26	$ 3.16
Diluted Earnings Per Common Share (in dollars per share)	2.55	3.26	3.16
Cash dividends declared (in dollars per share)	$ 0.70	$ 0.70	$ 0.685
OTHER COMPREHENSIVE INCOME (LOSS):
Net change in unrealized gains (losses) on available-for-sale securities, net of reclassification and tax	$ 6,109	$ (53,576)	$ (16,044)
Amortization of unrealized gains from held-to-maturity securities, net of tax	591	875	0
Change in actuarial gains (losses), for post-employment health care plan, net of amortization and tax	(139)	150	275
Change in fair value of interest rate swap agreements designated as a cash flow hedge, net of interest and tax	(119)	425	301
Total other comprehensive income (loss)	6,442	(52,126)	(15,468)
COMPREHENSIVE INCOME	$ 64,462	$ 11,062	$ 42,239