FAIR VALUE - Gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities (Details 3) $ in Thousands	Mar. 31, 2017 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	$ 66,541
Less than 12 months Unrealized Loss	1,393
12 months or more Fair Value	468
12 months or more Unrealized Loss	20
Total Fair Value	67,009
Total Unrealized Loss	1,413
State and Municipal
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	16,370
Less than 12 months Unrealized Loss	500
12 months or more Fair Value	468
12 months or more Unrealized Loss	20
Total Fair Value	16,838
Total Unrealized Loss	520
Mortgage Backed
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	50,171
Less than 12 months Unrealized Loss	893
12 months or more Fair Value
12 months or more Unrealized Loss
Total Fair Value	50,171
Total Unrealized Loss	$ 893