Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest and dividend income:
Loans and loans held for sale	$ 131,091	$ 122,082	$ 111,090
Investment securities	13,347	13,135	10,728
Other interest-earning assets	402	1,891	1,085
Total interest and dividend income	144,840	137,108	122,903
Interest expense:
Deposits	11,599	19,941	12,760
Borrowed funds	606	385	383
Subordinated debt	2,501	925	925
Total interest expense	14,706	21,251	14,068
Net interest income	130,134	115,857	108,835
Provision for loan losses	12,499	1,180	2,250
Net interest income after provision for loan losses	117,635	114,677	106,585
Non-interest income:
Wealth management fees	5,815	5,494	5,624
Deposit and interchange fees	6,426	6,870	6,234
Income on bank-owned life insurance, net	587	638	672
Net gains (losses) on sales of available-for-sale debt securities	227	146	(2,950)
Net gains on sales of loans	1,409	469	260
Other income	2,783	2,702	2,150
Total non-interest income	17,247	16,319	11,990
Non-interest expense:
Salaries and employee benefits	61,580	56,059	51,442
Occupancy and equipment expenses	8,546	8,417	8,526
Technology and telecommunications expenses	9,197	7,590	6,382
Advertising and public relations expenses	2,151	2,962	3,182
Audit, legal and other professional fees	2,273	2,039	1,725
Deposit insurance premiums	2,124	876	1,697
Supplies and postage expenses	898	971	989
Other operating expenses	6,485	7,501	6,935
Total non-interest expense	93,254	86,415	80,878
Income before income taxes	41,628	44,581	37,697
Provision for income taxes	10,172	10,381	8,816
Net income	$ 31,456	$ 34,200	$ 28,881
Basic earnings per share (in dollars per share)	$ 2.64	$ 2.90	$ 2.47
Diluted earnings per share (in dollars per share)	$ 2.64	$ 2.89	$ 2.46
Basic weighted average common shares outstanding (in shares)	11,897,813	11,789,570	11,679,520
Diluted weighted average common shares outstanding (in shares)	11,919,508	11,829,818	11,750,462