Loans Receivable, Net - Schedule of Loans Accrual of Income has Been Discontinued and Loans Past Due but Not Classified as Non-accrual (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	$ 241,000	$ 249,000
Accruing loans delinquent 90 days or more	64,000	49,000
Total non-performing loans	305,000	249,000
Residential 1-4 Family Mortgage Loans [Member] | Mortgage Loans Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Total non-accrual loans	241,000	249,000
Accruing loans delinquent 90 days or more		49,000
Commercial Real Estate and Multi-Family Mortgage Loans [Member] | Mortgage Loans Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Total non-accrual loans
Accruing loans delinquent 90 days or more
Home Equity Line of Credit [Member] | Mortgage Loans Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Total non-accrual loans
Accruing loans delinquent 90 days or more	9,000
Student Loans [Member] | Mortgage Loans Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Total non-accrual loans
Accruing loans delinquent 90 days or more	55,000
Other Loans [Member] | Mortgage Loans Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Total non-accrual loans