LOANS - Troubled debt restructurings (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($) Integer	Sep. 30, 2014 USD ($) Integer
Business Activities Loans - Residential real estate
Quantity of troubled debt restructurings | Integer	2	2
Pre-modification balance	$ 923	$ 237
Post-modification balance	$ 923	$ 237
Business Activities Loans - Commercial real estate
Quantity of troubled debt restructurings | Integer	2	3
Pre-modification balance	$ 478	$ 846
Post-modification balance	$ 478	$ 846
Business Activities Loans - Construction of commercial
Quantity of troubled debt restructurings | Integer		1
Pre-modification balance		$ 131
Post-modification balance		$ 131
Business Activities Loans - Home equity credit
Quantity of troubled debt restructurings | Integer	1	2
Pre-modification balance	$ 35	$ 72
Post-modification balance	$ 35	$ 72
Business Activities Loans - Troubled debt restructurings
Quantity of troubled debt restructurings | Integer	5	8
Pre-modification balance	$ 1,436	$ 1,286
Post-modification balance	$ 1,436	$ 1,286
Business Activities Loans - Rate reduction and term extension
Quantity of troubled debt restructurings | Integer	2
Pre-modification balance	$ 478
Post-modification balance	$ 478
Business Activities Loans - Interest only and term extension
Quantity of troubled debt restructurings | Integer		1
Pre-modification balance		$ 48
Post-modification balance		$ 48
Business Activities Loans - Term extension and amortization
Quantity of troubled debt restructurings | Integer		2
Pre-modification balance		$ 338
Post-modification balance		$ 338
Business Activities Loans - Interest only
Quantity of troubled debt restructurings | Integer		2
Pre-modification balance		$ 54
Post-modification balance		$ 54
Business Activities Loans - Debt consolidation, rate reduction, term extension
Quantity of troubled debt restructurings | Integer		1
Pre-modification balance		$ 399
Post-modification balance		$ 399
Business Activities Loans - Debt consolidation and term extension
Quantity of troubled debt restructurings | Integer		2
Pre-modification balance		$ 447
Post-modification balance		$ 447
Business Activities Loans - Note bifurcation
Quantity of troubled debt restructurings | Integer	1
Pre-modification balance	$ 48
Post-modification balance	$ 48
Business Activities Loans - Term extension
Quantity of troubled debt restructurings | Integer	2
Pre-modification balance	$ 910
Post-modification balance	$ 910