Loans (Details 10) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	$ 2,272	$ 2,331
Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	2,414	2,471
Notes Receivable Net Acquired With Recorded Investment Net Of Allowance	2,272	2,331
One To Four Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	1,007	1,012
One To Four Family Residential Real Estate [Member] | Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	1,036	1,045
Multi Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	294	296
Multi Family Residential Real Estate [Member] | Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	298	300
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	808	846
Commercial Real Estate [Member] | Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	871	899
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	163	177
Commercial Loan [Member] | Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	209	227
Consumer [Member] | Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	$ 0	$ 0