Loans Receivable, Net - Schedule of Activity in Allowance for Loan Losses by Loan Type (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	$ 408,000	$ 507,000	$ 408,000	$ 507,000
Provision for loan losses	26,231		26,231
Ending Balance	434,000	507,000	434,000	507,000
Student Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	118,000	49,000	122,000	54,000
Provision for loan losses	(4,000)	23,000	(8,000)	18,000
Ending Balance	114,000	72,000	114,000	72,000
Mortgage Loans Portfolio Segment [Member] | Residential 1-4 Family Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	148,000	327,000	145,000	318,000
Provision for loan losses	4,000	(19,000)	7,000	(10,000)
Ending Balance	152,000	308,000	152,000	308,000
Mortgage Loans Portfolio Segment [Member] | Commercial and Multi-Family Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	129,000	110,000	128,000	121,000
Provision for loan losses	27,000	(2,000)	28,000	(13,000)
Ending Balance	156,000	108,000	156,000	108,000
Mortgage Loans Portfolio Segment [Member] | Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	1,000	4,000	1,000	4,000
Provision for loan losses	(1,000)	(1,000)	(1,000)	(1,000)
Ending Balance		3,000		3,000
Other Loans Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	12,000	10,000	12,000	10,000
Provision for loan losses		3,000		3,000
Ending Balance	12,000	13,000	12,000	13,000
Unallocated Financing Receivables [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance		7,000
Provision for loan losses		(4,000)		3,000
Ending Balance		$ 3,000		$ 3,000