SECURITIES - AFS and HTM - Amortized Cost and FV (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) security	Dec. 31, 2015 USD ($)
Available for Sale, Amortized cost
After five years through ten years	$ 528,000
Over ten years	1,834,000
Total	2,362,000
Available-for-sale Securities, Amortized Cost Basis	19,834,000	$ 18,953,000
Available for Sale, Fair Value
After five years through ten years	537,000
Over ten years	1,848,000
Total	2,385,000
Fair Value	19,772,000	19,028,000
Held to maturity, Amortized Cost
Over 10 years	570,000
Total	570,000
Total	2,503,000	3,112,000
Held to Maturity, Fair Value
Over 10 years	565,000
Total	565,000
Fair Value	2,490,000	3,128,000
Available for sale securities with gross unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous loss position
Less Than Twelve Months, Fair Value	9,230,000	3,946,000
Less Than Twelve Months, Gross Unrealized Losses	146,000	20,000
Twelve Months Or Longer, Gross Unrealized Losses		(71,000)
Twelve Months Or Longer, Fair Value		3,473,000
Held to maturity securities with gross unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous loss position
Less than 12 months, Gross Unrealized Loss	16,000
Less than 12 months, Fair Value	2,463,000
Total temporarily impaired securities, Less than 12 months, Gross Unrealized Loss	162,000
Total temporarily impaired securities, Less than 12 months, Fair Value	11,693,000
Additional disclosures
Proceeds from sale of securities		867,000
Proceeds from sale of securities	0	204,000
Proceeds from the sale of securities held to maturity		663,000
Gain from sale of securities		60,000
Gain from sale of securities available for sale		21,000
Gain on sale of securities held to maturity		39,000
Income tax expense related to realized gains on sale	$ 21,000
Number of available-for-sale securities in unrealized loss position | security	11
Number of investments guaranteed by the U.S. Government or its agencies | security	7
Minimum
Additional disclosures
Percentage of held to maturity securities principal balance collected	85.00%
State and municipal
Available for Sale, Amortized cost
Available-for-sale Securities, Amortized Cost Basis	$ 2,362,000	2,410,000
Available for Sale, Fair Value
Fair Value	2,385,000	2,470,000
Held to maturity, Amortized Cost
Total	570,000	573,000
Held to Maturity, Fair Value
Fair Value	565,000	585,000
Available for sale securities with gross unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous loss position
Less Than Twelve Months, Fair Value	512,000
Less Than Twelve Months, Gross Unrealized Losses	4,000
Twelve Months Or Longer, Gross Unrealized Losses		(2,000)
Twelve Months Or Longer, Fair Value		244,000
Held to maturity securities with gross unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous loss position
Less than 12 months, Gross Unrealized Loss	5,000
Less than 12 months, Fair Value	565,000
Residential mortgage-backed securities
Available for Sale, Amortized cost
Securities without single maturity date	17,472,000
Available-for-sale Securities, Amortized Cost Basis	17,472,000	16,543,000
Available for Sale, Fair Value
Securities without single maturity date	17,387,000
Fair Value	17,387,000	16,558,000
Held to maturity, Amortized Cost
Securities without single maturity date	1,933,000
Total	1,933,000	2,539,000
Held to Maturity, Fair Value
Securities without single maturity date	1,925,000
Fair Value	1,925,000	2,543,000
Available for sale securities with gross unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous loss position
Less Than Twelve Months, Fair Value	8,718,000	3,946,000
Less Than Twelve Months, Gross Unrealized Losses	142,000	20,000
Twelve Months Or Longer, Gross Unrealized Losses		(69,000)
Twelve Months Or Longer, Fair Value		$ 3,229,000
Held to maturity securities with gross unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous loss position
Less than 12 months, Gross Unrealized Loss	11,000
Less than 12 months, Fair Value	$ 1,898,000