Available for Sale Securities (Details) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		$ 111,339	$ 104,573
Gross Unrealized Gains		127	12
Gross Unrealized Losses		(2,071)	(3,273)
Fair Value		109,395	101,312
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		3,033	3,036
Gross Unrealized Gains		0	0
Gross Unrealized Losses		(43)	(65)
Fair Value		2,990	2,971
U.S. government agency mortgage-backed securities-residential
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		89,740	82,965
Gross Unrealized Gains		115	8
Gross Unrealized Losses		(1,746)	(2,757)
Fair Value		88,109	80,216
U.S. government agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		16,914	16,919
Gross Unrealized Gains		0	0
Gross Unrealized Losses		(282)	(451)
Fair Value		16,632	16,468
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	[1]	1,229	1,228
Gross Unrealized Gains	[1]	12	4
Gross Unrealized Losses	[1]	0	0
Fair Value	[1]	1,241	1,232
Other
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		423	425
Gross Unrealized Gains		0	0
Gross Unrealized Losses		0	0
Fair Value		$ 423	$ 425

[1] Includes $19 for the three months ended March 31, 2019 and $0 for the three months ended March 31, 2018 for tax effect of amortization of net actuarial loss included in the provision for income taxes on the consolidated statements of income.