FAIR VALUE OF ASSETS AND LIABILITIES - Summary of Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financial assets:
Securities available for sale	$ 19,772	$ 19,028
Fair Value	2,490	3,128
Financial liabilities:
Short-term FHLB advances	17,250	23,500
Mortgagor's escrow accounts	1,633	1,386
Carrying Amount
Financial assets:
Cash and cash equivalents	6,129	7,758
Securities available for sale	19,772	19,028
Fair Value	2,503	3,112
FHLB stock	2,341	2,933
Bankers Bank Northeast stock	60	60
Loans held for sale	271
Loans, net	277,371	253,983
Accrued interest receivable	816	799
Capitalized mortgage servicing rights	236	519
Financial liabilities:
Deposits	240,508	207,726
Short-term FHLB advances	17,250	23,500
Long-term FHLB advances	24,600	27,100
Mortgagor's escrow accounts	1,633	1,386
Accrued interest payable	58	59
Total Assets at Fair Value
Financial assets:
Cash and cash equivalents	6,129	7,758
Securities available for sale	19,772	19,028
Fair Value	2,490	3,128
FHLB stock	2,341	2,933
Bankers Bank Northeast stock	60	60
Loans held for sale	275
Loans, net	275,824	254,095
Accrued interest receivable	816	799
Capitalized mortgage servicing rights	601	1,100
Financial liabilities:
Deposits	241,264	207,894
Short-term FHLB advances	17,250	23,500
Long-term FHLB advances	24,699	27,255
Mortgagor's escrow accounts	1,633	1,386
Accrued interest payable	58	59
Level 1
Financial assets:
Cash and cash equivalents	6,129	7,758
FHLB stock	2,341	2,933
Bankers Bank Northeast stock	60	60
Loans held for sale	275
Accrued interest receivable	816	799
Financial liabilities:
Short-term FHLB advances	17,250	23,500
Mortgagor's escrow accounts	1,633	1,386
Accrued interest payable	58	59
Level 2
Financial assets:
Securities available for sale	19,772	19,028
Fair Value	2,490	3,128
Capitalized mortgage servicing rights	601	1,100
Financial liabilities:
Deposits	241,264	207,894
Long-term FHLB advances	24,699	27,255
Level 3
Financial assets:
Loans, net	$ 275,824	$ 254,095