Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Interest and dividend income:
Interest and fees on loans		$ 42,063	$ 41,253
Interest and dividends on securities available for sale:
U. S. government sponsored enterprises		421	783
State and political subdivisions		1	1
Mortgage-backed securities and collateralized mortgage obligations-residential		2,113	1,555
Corporate bonds		238	208
Small Business Administration-guaranteed participation securities		245	297
Other securities		6	5
Total interest and dividends on securities available for sale		3,024	2,849
Interest on held to maturity securities:
Mortgage-backed securities and collateralized mortgage obligations-residential		175	217
Total interest on held to maturity securities		175	217
Federal Reserve Bank and Federal Home Loan Bank stock		82	85
Interest on federal funds sold and other short-term investments		1,267	3,009
Total interest income		46,611	47,413
Interest on deposits:
Interest-bearing checking		16	121
Savings accounts		233	377
Money market deposit accounts		1,096	826
Time deposits		6,391	5,976
Interest on short-term borrowings		322	381
Total interest expense		8,058	7,681
Net interest income		38,553	39,732
Provision for loan losses		2,000	300
Net interest income after provision for loan losses		36,553	39,432
Noninterest income:
Trustco financial services income		1,600	1,733
Fees for services to customers		2,315	2,520
Net gain on securities transactions	[1]	1,155	0
Other		264	384
Total noninterest income		5,334	4,637
Noninterest expenses:
Salaries and employee benefits		11,373	11,451
Net occupancy expense		4,306	4,167
Equipment expense		1,802	1,902
Professional services		1,481	1,650
Outsourced services		2,075	1,925
Advertising expense		488	785
FDIC and other insurance		294	648
Other real estate expense (income), net		194	(24)
Other		2,255	2,363
Total noninterest expenses		24,268	24,867
Income before taxes		17,619	19,202
Income taxes		4,306	4,644
Net income		$ 13,313	$ 14,558
Net income per share:
Basic (in dollars per share)		$ 0.138	$ 0.150
Diluted (in dollars per share)		$ 0.138	$ 0.150

[1] Not within the scope of ASC 606.