Allowance for Loan Losses - Schedule of Primary Segments of the Loan Portfolio (Details) - USD ($)	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Allowance for loan losses	$ 1,101,600	$ 1,090,016	$ 1,041,445	$ 1,001,782	$ 940,732	$ 820,739
Loans	157,616,411		141,450,096
Loans Deemed Impaired [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses	33,422		23,870
Loans	4,438,806		3,668,894
Loans Not Deemed Impaired [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses	1,068,178		1,017,575
Loans	153,177,605		137,781,202
Mortgage One-to-Four Family [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses	438,244	471,438	513,846	490,504	488,009	498,410
Loans	75,617,401		75,858,226
Mortgage One-to-Four Family [Member] \| Loans Deemed Impaired [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses	33,422		23,870
Loans	2,492,049		2,508,658
Mortgage One-to-Four Family [Member] \| Loans Not Deemed Impaired [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses	404,822		489,976
Loans	73,125,352		73,349,568
Mortgage Commercial [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses	390,679	437,619	383,535	337,293	324,941	228,763
Loans	58,702,797		50,122,058
Mortgage Commercial [Member] \| Loans Deemed Impaired [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses
Loans	1,779,350		1,122,740
Mortgage Commercial [Member] \| Loans Not Deemed Impaired [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses	390,679		383,535
Loans	56,923,447		48,999,318
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses	230,597	134,880	80,854	85,652	70,466	59,439
Loans	18,118,214		11,455,554
Commercial and Industrial [Member] \| Loans Deemed Impaired [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses
Loans	155,660		8,251
Commercial and Industrial [Member] \| Loans Not Deemed Impaired [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses	230,597		80,854
Loans	17,962,554		11,447,303
Consumer and HELOC [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses	42,080	$ 46,079	63,210	$ 88,333	$ 57,316	$ 34,127
Loans	5,177,999		4,014,258
Consumer and HELOC [Member] \| Loans Deemed Impaired [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses
Loans	11,747		29,245
Consumer and HELOC [Member] \| Loans Not Deemed Impaired [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses	42,080		63,210
Loans	$ 5,166,252		$ 3,985,013

SSB Bancorp, Inc. 10-Q/A