Investment Securities (Schedule of amortized cost, gross unrealized gains and losses and fair values of available for sale securities) (Details) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		$ 294,345	$ 283,744
Gross Unrealized Gains		67	571
Gross Unrealized Losses		(17,375)	(4,032)
Fair Value		277,037	280,283
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		55,233	60,273
Gross Unrealized Gains		0	2
Gross Unrealized Losses		(1,765)	(450)
Fair Value		53,468	59,825
U.S. government agency mortgage-backed securities-residential
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		194,158	179,493
Gross Unrealized Gains		4	344
Gross Unrealized Losses		(13,953)	(3,346)
Fair Value		180,209	176,491
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		24,794	24,800
Gross Unrealized Gains		0	53
Gross Unrealized Losses		(1,121)	(131)
Fair Value		23,673	24,722
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	[1]	6,842	6,858
Gross Unrealized Gains	[1]	4	33
Gross Unrealized Losses	[1]	(194)	(40)
Fair Value	[1]	6,652	6,851
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		12,700	11,700
Gross Unrealized Gains		37	117
Gross Unrealized Losses		(342)	(65)
Fair Value		12,395	11,752
Other
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		618	620
Gross Unrealized Gains		22	22
Gross Unrealized Losses		0
Fair Value		$ 640	$ 642

[1] The issuers of municipal securities are all within New York State.