INVESTMENT SECURITIES (Schedule of changes in accumulated other comprehensive income by component) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	[1]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	[1]	$ 348,290
Net current-period other comprehensive income/(loss)		858	$ (1,478)
Balance		352,689	328,065
Accumulated Other Comprehensive Income (Loss), Net of Tax		(1,731)		$ (2,589)
Held-to-maturity Securities [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance		(170)	(153)
Other comprehensive income/(loss) before reclassifications		2	(30)
Amounts reclassified from accumulated other comprehensive loss due to the adoption of ASU 2018-02			(183)
Net current-period other comprehensive income/(loss)			4
Balance		(168)	(179)
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance		(2,589)	(1,152)
Other comprehensive income/(loss) before reclassifications		858	(229)
Amounts reclassified from accumulated other comprehensive loss due to the adoption of ASU 2018-02			(1,381)
Net current-period other comprehensive income/(loss)			(1,478)
Balance		(1,731)	(2,859)
Unrealized gains (losses) on securities available for sale
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance		(2,419)	(999)
Other comprehensive income/(loss) before reclassifications		856	(199)
Amounts reclassified from accumulated other comprehensive loss due to the adoption of ASU 2018-02			(1,198)
Net current-period other comprehensive income/(loss)			(1,482)
Balance		$ (1,563)	$ (2,680)

[1] Derived from audited consolidated financial statements