LOANS AND SERVICING - Internal Credit Assessment (Details) $ in Thousands	Sep. 30, 2016 USD ($) grade	Dec. 31, 2015 USD ($)
Loans by risk rating
Loans receivable	$ 273,870	$ 256,014
Internal Loan Rating System
Number of grades in internal loan rating system | grade	9
Not formally rated
Loans by risk rating
Loans receivable	$ 103,385	103,198
Pass
Loans by risk rating
Loans receivable	$ 167,576	150,128
Pass | Minimum
Internal Loan Rating System
Grade assigned in internal loan rating system | grade	1
Pass | Maximum
Internal Loan Rating System
Grade assigned in internal loan rating system | grade	5
Special mention
Loans by risk rating
Loans receivable		826
Internal Loan Rating System
Grade assigned in internal loan rating system | grade	6
Substandard
Loans by risk rating
Loans receivable	$ 2,909	1,862
Internal Loan Rating System
Grade assigned in internal loan rating system | grade	7
Doubtful
Internal Loan Rating System
Grade assigned in internal loan rating system | grade	8
Loss
Loans by risk rating
Loans receivable	$ 273,870	256,014
Internal Loan Rating System
Grade assigned in internal loan rating system | grade	9
Residential loans:
Loans by risk rating
Loans receivable	$ 105,140	104,735
One- to four- family, residential loans
Loans by risk rating
Loans receivable	89,206	86,472
One- to four- family, residential loans | Not formally rated
Loans by risk rating
Loans receivable	87,526	84,778
One- to four- family, residential loans | Substandard
Loans by risk rating
Loans receivable	1,680	1,694
One- to four- family, residential loans | Loss
Loans by risk rating
Loans receivable	89,206	86,472
Home equity loans and lines of credit
Loans by risk rating
Loans receivable	15,934	18,263
Home equity loans and lines of credit | Not formally rated
Loans by risk rating
Loans receivable	15,656	18,183
Home equity loans and lines of credit | Substandard
Loans by risk rating
Loans receivable	278	80
Home equity loans and lines of credit | Loss
Loans by risk rating
Loans receivable	15,934	18,263
Commercial loans:
Loans by risk rating
Loans receivable	143,744	130,664
One-to-four family investment property
Loans by risk rating
Loans receivable	13,708	15,255
One-to-four family investment property | Pass
Loans by risk rating
Loans receivable	13,622	15,167
One-to-four family investment property | Substandard
Loans by risk rating
Loans receivable	86	88
One-to-four family investment property | Loss
Loans by risk rating
Loans receivable	13,708	15,255
Multi-family real estate
Loans by risk rating
Loans receivable	28,026	30,709
Multi-family real estate | Pass
Loans by risk rating
Loans receivable	28,026	30,709
Multi-family real estate | Loss
Loans by risk rating
Loans receivable	28,026	30,709
Commercial real estate
Loans by risk rating
Loans receivable	81,691	67,152
Commercial real estate | Pass
Loans by risk rating
Loans receivable	80,975	66,420
Commercial real estate | Special mention
Loans by risk rating
Loans receivable		732
Commercial real estate | Substandard
Loans by risk rating
Loans receivable	716
Commercial real estate | Loss
Loans by risk rating
Loans receivable	81,691	67,152
Commercial business loan
Loans by risk rating
Loans receivable	20,319	17,548
Commercial business loan | Pass
Loans by risk rating
Loans receivable	20,170	17,454
Commercial business loan | Special mention
Loans by risk rating
Loans receivable		94
Commercial business loan | Substandard
Loans by risk rating
Loans receivable	149
Commercial business loan | Loss
Loans by risk rating
Loans receivable	20,319	17,548
Construction loans
Loans by risk rating
Loans receivable	24,783	20,378
One-to-four family, construction loans
Loans by risk rating
Loans receivable	13,459	12,967
One-to-four family, construction loans | Pass
Loans by risk rating
Loans receivable	13,459	12,967
One-to-four family, construction loans | Loss
Loans by risk rating
Loans receivable	13,459	12,967
Multi-family
Loans by risk rating
Loans receivable	4,696	1,486
Multi-family | Pass
Loans by risk rating
Loans receivable	4,696	1,486
Multi-family | Loss
Loans by risk rating
Loans receivable	4,696	1,486
Non-residential
Loans by risk rating
Loans receivable	6,628	5,925
Non-residential | Pass
Loans by risk rating
Loans receivable	6,628	5,925
Non-residential | Loss
Loans by risk rating
Loans receivable	6,628	5,925
Consumer
Loans by risk rating
Loans receivable	203	237
Consumer | Not formally rated
Loans by risk rating
Loans receivable	203	237
Consumer | Loss
Loans by risk rating
Loans receivable	$ 203	$ 237