Loans (Details 10) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Notes Receivable Net Acquired With Deteriorated Credit Quality	$ 3,571	$ 3,828
One To Four Family Residential Real Estate [Member]
Notes Receivable Net Acquired With Deteriorated Credit Quality	1,028	1,069
Multi-Family Residential Real Estate [Member]
Notes Receivable Net Acquired With Deteriorated Credit Quality	299	301
Commercial Real Estate [Member]
Notes Receivable Net Acquired With Deteriorated Credit Quality	2,001	2,121
Commercial Loan [Member]
Notes Receivable Net Acquired With Deteriorated Credit Quality	243	337
Loan Purchase [Member]
Notes Receivable Net Acquired With Deteriorated Credit Quality	4,484	4,793
Notes Receivable Net Acquired With Recorded Investment Net Of Allowance	3,571	3,828
Loan Purchase [Member] | One To Four Family Residential Real Estate [Member]
Notes Receivable Net Acquired With Deteriorated Credit Quality	1,103	1,154
Loan Purchase [Member] | Multi-Family Residential Real Estate [Member]
Notes Receivable Net Acquired With Deteriorated Credit Quality	305	309
Loan Purchase [Member] | Commercial Real Estate [Member]
Notes Receivable Net Acquired With Deteriorated Credit Quality	2,777	2,921
Loan Purchase [Member] | Commercial Loan [Member]
Notes Receivable Net Acquired With Deteriorated Credit Quality	298	407
Loan Purchase [Member] | Consumer [Member]
Notes Receivable Net Acquired With Deteriorated Credit Quality	$ 1	$ 2