Investment Securities (Schedule of amortized cost, gross unrealized gains and losses and fair values of available for sale securities) (Details) - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		$ 269,930	$ 283,744
Gross Unrealized Gains		215	571
Gross Unrealized Losses		(24,517)	(4,032)
Fair Value		245,628	280,283
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		40,224	60,273
Gross Unrealized Gains		0	2
Gross Unrealized Losses		(1,966)	(450)
Fair Value		38,258	59,825
U.S. government agency mortgage-backed securities-residential
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		185,427	179,493
Gross Unrealized Gains		0	344
Gross Unrealized Losses		(20,221)	(3,346)
Fair Value		165,206	176,491
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		24,791	24,800
Gross Unrealized Gains		0	53
Gross Unrealized Losses		(1,489)	(131)
Fair Value		23,302	24,722
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	[1]	5,146	6,858
Gross Unrealized Gains	[1]	0	33
Gross Unrealized Losses	[1]	(264)	(40)
Fair Value	[1]	4,882	6,851
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		13,700	11,700
Gross Unrealized Gains		10	117
Gross Unrealized Losses		(577)	(65)
Fair Value		13,133	11,752
Other
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		642	620
Gross Unrealized Gains		205	22
Gross Unrealized Losses		0
Fair Value		$ 847	$ 642

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