LOANS RECEIVABLE (Details 4) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 102,167	$ 94,502
Greater than 90 day past due and still accruing	0	341
Total past due	305	1,325
Total	102,472	95,827
30 - 59 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2	115
60 - 89 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3	0
Greater than 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	300	869
Residential Real Estate, HELOC, Commercial, and Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	83,526	78,710
Greater than 90 day past due and still accruing	0	341
Total past due	305	694
Total	83,831	79,404
Residential Real Estate, HELOC, Commercial, and Consumer \| 30 - 59 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2	115
Residential Real Estate, HELOC, Commercial, and Consumer \| 60 - 89 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3	0
Residential Real Estate, HELOC, Commercial, and Consumer \| Greater than 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	300	238
Real estate \| Non-residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	15,882	13,183
Greater than 90 day past due and still accruing	0	0
Total past due	0	0
Total	15,882	13,183
Real estate \| Non-residential \| 30 - 59 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Real estate \| Non-residential \| 60 - 89 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Real estate \| Non-residential \| Greater than 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Real estate \| Construction and Land
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	2,759	2,609
Greater than 90 day past due and still accruing	0	0
Total past due	0	631
Total	2,759	3,240
Real estate \| Construction and Land \| 30 - 59 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Real estate \| Construction and Land \| 60 - 89 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Real estate \| Construction and Land \| Greater than 90 days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 0	$ 631

MB Bancorp Inc 10-Q