Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest income:
Interest and fees on loans	$ 38,711	$ 34,483	$ 74,448	$ 69,071
Interest and dividends on taxable investment securities	3,168	4,141	5,742	9,524
Interest on tax-exempt investment securities	865	634	1,476	1,289
Other interest income	53	48	93	284
Total interest income	42,797	39,306	81,759	80,168
Interest expense:
Interest on deposits	2,577	3,284	5,394	7,913
Interest on short-term borrowings	92	574	192	1,613
Interest on long-term borrowings	468	588	935	1,146
Total interest expense	3,137	4,446	6,521	10,672
Net interest income	39,660	34,860	75,238	69,496
Provision for (recovery of) credit losses	3,088	11,834	(1,661)	28,803
Net interest income after provision for (recovery of) credit losses	36,572	23,026	76,899	40,693
Non-interest income:
Insurance income	3,335	3,191	8,556	7,321
Mortgage banking income	820	938	1,960	1,688
Bank owned life insurance income	446	470	892	1,052
Net (loss) gain on investment securities	(202)	62	(538)	381
Net loss on asset disposals and other transactions	(124)	(122)	(151)	(209)
Other non-interest income	803	422	1,461	859
Total non-interest income	15,821	14,664	32,724	30,401
Non-interest expense:
Salaries and employee benefit costs	21,928	17,985	42,687	37,903
Professional fees	3,565	1,834	7,033	3,527
Net occupancy and equipment expense	3,289	3,151	6,616	6,305
Data processing and software expense	2,411	1,754	4,865	3,506
Electronic banking expense	2,075	1,879	3,969	3,744
Marketing expense	676	632	1,587	1,105
Franchise tax expense	822	881	1,677	1,763
Amortization of other intangible assets	1,368	728	1,988	1,457
FDIC insurance premium	326	152	789	147
Other loan expenses	494	335	956	913
Communication expense	386	294	668	574
Other non-interest expense	2,559	2,180	5,051	5,186
Total non-interest expense	39,899	31,805	77,886	66,130
Income before income taxes	12,494	5,885	31,737	4,964
Income tax expense	2,391	1,136	6,171	980
Net income	$ 10,103	$ 4,749	$ 25,566	$ 3,984
Earnings per common share - basic	$ 0.52	$ 0.24	$ 1.32	$ 0.19
Earnings per common share - diluted	$ 0.51	$ 0.23	$ 1.31	$ 0.19
Weighted-average number of common shares outstanding - basic	19,317,454	19,720,315	19,300,156	20,043,329
Weighted-average number of common shares outstanding - diluted	19,461,934	19,858,880	19,448,544	20,183,222
Cash dividends declared	$ 7,065	$ 6,814	$ 13,898	$ 13,852
Cash dividends declared per common share	$ 0.36	$ 0.34	$ 0.71	$ 0.68
Credit and Debit Card [Member]
Non-interest income:
Revenue from Contract with Customer, Including Assessed Tax	$ 4,418	$ 3,523	$ 8,329	$ 6,803
Deposit Account [Member]
Non-interest income:
Revenue from Contract with Customer, Including Assessed Tax	2,044	1,909	4,029	4,729
Fiduciary and Trust [Member]
Non-interest income:
Revenue from Contract with Customer, Including Assessed Tax	4,220	3,316	8,065	6,578
Interest Rate Swap [Member] | Transaction fee [Member]
Non-interest income:
Revenue from Contract with Customer, Including Assessed Tax	$ 61	$ 955	$ 121	$ 1,199