Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest and dividend income:
Interest and fees on loans	$ 41,923	$ 40,073	$ 124,608	$ 117,120
Interest and dividends on securities available for sale:
U. S. government sponsored enterprises	996	787	2,600	2,324
State and political subdivisions	2	7	6	20
Mortgage-backed securities and collateralized mortgage obligations	2,178	1,601	5,885	5,039
Corporate bonds	321	202	801	485
Small Business Administration-guaranteed participation securities	282	325	868	1,010
Mortgage-backed securities and collateralized mortgage obligations-commercial	0	0	0	37
Other securities	6	4	16	13
Total interest and dividends on securities available for sale	3,785	2,926	10,176	8,928
Interest on held to maturity securities:
Mortgage-backed securities and collateralized mortgage obligations-residential	187	232	613	736
Total interest on held to maturity securities	187	232	613	736
Federal Reserve Bank and Federal Home Loan Bank stock	81	82	365	357
Interest on federal funds sold and other short-term investments	2,552	2,425	8,843	6,909
Total interest income	48,528	45,738	144,605	134,050
Interest on deposits:
Interest-bearing checking	52	113	267	331
Savings accounts	323	417	1,067	1,256
Money market deposit accounts	1,177	544	3,122	1,435
Time deposits	7,974	3,864	21,462	10,163
Interest on short-term borrowings	359	277	1,121	918
Total interest expense	9,885	5,215	27,039	14,103
Net interest income	38,643	40,523	117,566	119,947
Provision (Credit) for loan losses	0	300	(41)	900
Net interest income after provision for loan losses	38,643	40,223	117,607	119,047
Noninterest income:
Trustco financial services income	1,517	1,516	4,933	4,927
Fees for services to customers	2,602	2,693	7,733	8,015
Other	806	246	1,810	687
Total noninterest income	4,925	4,455	14,476	13,629
Noninterest expenses:
Salaries and employee benefits	11,725	10,761	34,887	31,924
Net occupancy expense	4,094	3,997	12,267	12,413
Equipment expense	1,689	1,783	5,300	5,327
Professional services	1,507	1,578	4,725	4,822
Outsourced services	1,875	1,875	5,675	5,625
Advertising expense	494	844	2,057	2,144
FDIC and other insurance	282	682	1,528	2,219
Other real estate expense, net	33	528	219	1,194
Other	2,371	2,496	7,181	7,126
Total noninterest expenses	24,070	24,544	73,839	72,794
Income before taxes	19,498	20,134	58,244	59,882
Income taxes	4,790	4,935	14,311	14,470
Net income	$ 14,708	$ 15,199	$ 43,933	$ 45,412
Net income per share:
Basic (in dollars per share)	$ 0.152	$ 0.157	$ 0.454	$ 0.471
Diluted (in dollars per share)	$ 0.152	$ 0.157	$ 0.453	$ 0.470