GOODWILL AND OTHER INTANGIBLE ASSETS (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013 Bond	Dec. 31, 2012
Changes to carrying amount of goodwill [Roll Forward]
Beginning balance	$ 42,171,000	$ 42,781,000
Adjustment to goodwill	0	(610,000)
Ending balance	42,171,000	42,171,000	42,781,000
Reclassification of a liability assumed from PSB acquisition		415,000
Increase in the value of fixed assets acquired		351,000
Increase to income tax receivable from PSB acquisition		190,000
Goodwill market value adjustment		254,000
Number of bonds held in investment portfolio at acquisition		2
Increase to income tax payable from PSB acquisition		36,000
Net of deferred taxes adjustment resulted in reduction to goodwill		610,000
Finite-Lived Intangible Assets [Line Items]
Amortization expense	1,106,000	1,106,000	762,000
Core Deposit Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	11,674,000	11,674,000
Less accumulated amortization	(4,840,000)	(3,733,000)
Net carrying amount	6,834,000	7,941,000
Amortization expense	1,100,000	1,100,000	762,000
Summary of estimated amortization expense [Abstract]
2015	1,106,000
2016	1,106,000
2017	1,106,000
2018	1,106,000
2019	1,107,000
Thereafter	1,303,000
Net carrying amount	$ 6,834,000	$ 7,941,000