Investment Securities Investment Securities Text Tags (Details)	3 Months Ended
	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Jun. 30, 2018 USD ($)
Schedule of Investments [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	27	35
Available-for-sale	$ 78,391,000	$ 79,845,000
Percentage Available-for-sale Securities	87.80%
Held-to-maturity	$ 10,892,000	11,137,000
Percentage Held-to-maturity Securities	12.20%
Trading	$ 0
Proceeds from Sale of Available-for-sale Securities	$ 0
Mortgage-backed securities
Schedule of Investments [Line Items]
Percentage Available-for-Sale, Continuos Unrealized Loss Position	43.70%
Number of AFS securities in Unrealized Loss Positions, greater than or equal to 12 months	17
Held-to-maturity	$ 9,892,000	10,137,000
US Government Agency Securities
Schedule of Investments [Line Items]
Percentage Available-for-Sale, Continuos Unrealized Loss Position	50.90%
Number of AFS securities in Unrealized Loss Positions, greater than or equal to 12 months	2
Corporate Bonds
Schedule of Investments [Line Items]
Number of AFS securities in Unrealized Loss Positions, greater than or equal to 12 months	3
Held-to-maturity	$ 1,000,000	$ 1,000,000
Accounting Standards Update 2016-01
Schedule of Investments [Line Items]
Cumulative Effect of New Accounting Principle			$ 0
Accounting Standards Update 2016-01 | Accumulated Deficit
Schedule of Investments [Line Items]
Cumulative Effect of New Accounting Principle			$ (721,000)