INTEREST RATE SWAPS (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 item
Summary information about interest rate swaps
Notional amount	$ 38,554
Interest rate swap | Cash flow hedge
Derivative [Line Items]
Number of derivative agreements | item			2
Summary information about interest rate swaps
Notional amount	20,000
(Liabilities)	(505)	$ (488)
Unrealized gain (loss) in accumulated OCI	(328)	(316)
Interest rate swap | Cash flow hedge | 1-month LIBOR
Summary information about interest rate swaps
Notional amount	$ 10,000
Pay rate (as a percent)	2.17%
(Liabilities)	$ (239)	(232)
Unrealized gain (loss) in accumulated OCI	(155)	(150)
Interest rate swap | Cash flow hedge | 3-month LIBOR
Summary information about interest rate swaps
Notional amount	$ 10,000
Pay rate (as a percent)	2.33%
(Liabilities)	$ (266)	(256)
Unrealized gain (loss) in accumulated OCI	$ (173)	$ (166)