Loans (Details 10) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	$ 2,331	$ 3,828
Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	2,471	4,793
Notes Receivable Net Acquired With Recorded Investment Net Of Allowance	2,331	3,828
One To Four Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	1,012	1,069
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	1,045	1,154
Multi Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	296	301
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	300	309
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	846	2,121
Commercial Real Estate [Member] | Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	899	2,921
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	177	337
Commercial Loan [Member] | Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	227	407
Consumer [Member] | Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	$ 0	$ 2