ACCUMULATED OTHER COMPREHENSIVE INCOME(LOSS) (Schedule of Reclassifications out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Securities losses, net	$ 46	$ (325)	$ (36)	$ (78)					$ (393)		$ 119
Income tax expense (benefit)	(2,887)	(3,617)	(3,832)	(3,214)	$ (2,922)	$ (6,256)	$ (4,908)	$ (3,724)	(13,550)	$ (17,810)	(16,264)
Net income	$ 10,729	$ 10,724	$ 11,910	$ 10,807	$ 10,369	$ 10,206	$ 7,940	$ 7,982	44,170	$ 36,497	26,477
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Unrealized Losses on Securities Available for Sale [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Securities losses, net									288		119
Income tax expense (benefit)									(70)		(44)
Net income									218		$ 75
Reclassification out of Accumulated Other Comprehensive Income | (Losses)/Gains on Cash Flow Hedge [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest expense									(124)
Income tax expense (benefit)									30
Net income									$ (94)