CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Interest and dividend income
Interest on taxable loans	$ 135,965	$ 120,019	$ 119,447
Interest on tax-exempt loans	1,447	1,205	880
Interest on taxable investment securities	19,555	9,464	6,048
Interest on tax-exempt investment securities	2,477	2,630	2,485
Dividends on FHLB of Boston stock	287	46	331
Interest on overnight investments	262	150	187
Total interest and dividend income	159,993	133,514	129,378
Interest expense
Interest on deposits	14,598	4,974	7,295
Interest on borrowed funds	2,180	559	1,406
Interest on subordinated debt			444
Total interest expense	16,778	5,533	9,145
Net interest and dividend income	143,215	127,981	120,233
Provision for (release of) credit losses	3,881	(1,294)	18,310
Net interest and dividend income after provision for (release of) credit losses	139,334	129,275	101,923
Noninterest income
Bank owned life insurance income	1,808	801	747
Gain (loss) on disposition of investment securities			69
Gain on loans sold, net	98	832	1,850
Loan related derivative income	625	2,124	1,479
Other income	2,868	2,024	1,726
Total noninterest income	43,009	44,324	39,525
Noninterest expense
Salaries and employee benefits	70,109	65,127	58,975
Occupancy and equipment	14,364	13,898	13,004
Data processing	10,706	8,829	7,662
Professional services	4,728	5,391	4,190
Marketing	2,301	2,536	1,818
FDIC insurance	1,845	1,318	992
Non-operating expenses	3,059	1,118	7,612
Other expenses	3,270	2,267	3,832
Total noninterest expense	110,382	100,484	98,085
Income before income taxes	71,961	73,115	43,363
Income tax expense	19,052	19,091	11,404
Net Income	$ 52,909	$ 54,024	$ 31,959
Share data:
Weighted average shares outstanding, basic	7,163,223	6,926,257	6,289,481
Weighted average shares outstanding, diluted	7,213,913	6,990,603	6,344,409
Basic earnings per share	$ 7.35	$ 7.76	$ 5.07
Diluted earnings per share	$ 7.30	$ 7.69	$ 5.03
Wealth Management Revenue
Noninterest income
Noninterest income	$ 33,034	$ 35,037	$ 29,751
Deposit Account Fees
Noninterest income
Noninterest income	2,913	1,939	2,595
ATM/Debit Card Income
Noninterest income
Noninterest income	$ 1,663	$ 1,567	$ 1,308