CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest and dividend income
Interest on taxable loans	$ 120,019	$ 119,447	$ 84,382
Interest on tax-exempt loans	1,205	880	584
Interest on taxable investment securities	9,464	6,048	7,963
Interest on tax-exempt investment securities	2,630	2,485	2,289
Dividends on FHLB of Boston stock	46	331	390
Interest on overnight investments	150	187	731
Total interest and dividend income	133,514	129,378	96,339
Interest expense
Interest on deposits	4,974	7,295	15,641
Interest on borrowed funds	559	1,406	2,002
Interest on subordinated debt		444
Total interest expense	5,533	9,145	17,643
Net interest and dividend income	127,981	120,233	78,696
Provision for (release of) credit losses	(1,294)	18,310	3,004
Net interest and dividend income after provision for (release of) credit losses	129,275	101,923	75,692
Noninterest income
Bank owned life insurance income	801	747	612
Gain (loss) on disposition of investment securities		69	(79)
Gain on loans sold, net	832	1,850	1,170
Loan related derivative income	2,124	1,479	1,674
Other income	2,024	1,726	1,927
Total noninterest income	44,324	39,525	36,401
Noninterest expense
Salaries and employee benefits	65,127	58,975	47,494
Occupancy and equipment	13,898	13,004	10,855
Data processing	8,829	7,662	6,232
Professional services	5,391	4,190	3,623
Marketing	2,536	1,818	1,760
FDIC insurance	1,318	992	291
Non-operating expenses	1,118	7,612	4,721
Other expenses	2,267	3,832	3,199
Total noninterest expense	100,484	98,085	78,175
Income before income taxes	73,115	43,363	33,918
Income tax expense	19,091	11,404	8,661
Net Income	$ 54,024	$ 31,959	$ 25,257
Share data:
Weighted average shares outstanding, basic	6,926,257	6,289,481	4,629,255
Weighted average shares outstanding, diluted	6,990,603	6,344,409	4,661,720
Basic earnings per share	$ 7.76	$ 5.07	$ 5.41
Diluted earnings per share	$ 7.69	$ 5.03	$ 5.37
Wealth Management Revenue
Noninterest income
Noninterest income	$ 35,037	$ 29,751	$ 26,499
Deposit Account Fees
Noninterest income
Noninterest income	1,939	2,595	3,185
ATM/Debit Card Income
Noninterest income
Noninterest income	$ 1,567	$ 1,308	$ 1,413