LOANS - Troubled debt restructurings (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2015 USD ($) Integer	Jun. 30, 2014 USD ($) Integer
Business Activities Loans - Residential real estate
Quantity of troubled debt restructurings | Integer	1	1
Pre-modification balance	$ 875	$ 30
Post-modification balance	$ 875	$ 30
Business Activities Loans - Commercial real estate
Quantity of troubled debt restructurings | Integer	1	2
Pre-modification balance	$ 184	$ 447
Post-modification balance	$ 184	$ 447
Business Activities Loans - Home equity credit
Quantity of troubled debt restructurings | Integer		2
Pre-modification balance		$ 72
Post-modification balance		$ 72
Business Activities Loans - Troubled debt restructurings
Quantity of troubled debt restructurings | Integer	2	5
Pre-modification balance	$ 1,059	$ 549
Post-modification balance	$ 1,059	$ 549
Business Activities Loans - Rate reduction and term extension
Quantity of troubled debt restructurings | Integer	1
Pre-modification balance	$ 184
Post-modification balance	$ 184
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 - Interest only
Quantity of troubled debt restructurings | Integer		2
Pre-modification balance		$ 54
Post-modification balance		$ 54
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 - Term extension
Quantity of troubled debt restructurings | Integer	1
Pre-modification balance	$ 875
Post-modification balance	$ 875