Available for Sale Securities (Details) - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		$ 111,413	$ 104,573
Gross Unrealized Gains		688	12
Gross Unrealized Losses		(703)	(3,273)
Fair Value		111,398	101,312
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		0	3,036
Gross Unrealized Gains		0	0
Gross Unrealized Losses		0	(65)
Fair Value		0	2,971
U.S. government agency mortgage-backed securities-residential
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		89,707	82,965
Gross Unrealized Gains		592	8
Gross Unrealized Losses		(586)	(2,757)
Fair Value		89,713	80,216
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		19,935	16,919
Gross Unrealized Gains		29	0
Gross Unrealized Losses		(117)	(451)
Fair Value		19,847	16,468
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	[1]	1,229	1,228
Gross Unrealized Gains	[1]	18	4
Gross Unrealized Losses	[1]	0	0
Fair Value	[1]	1,247	1,232
Other
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		542	425
Gross Unrealized Gains		49	0
Gross Unrealized Losses		0	0
Fair Value		$ 591	$ 425

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