ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Reclassification Adjustments Out of Accumulated Other Comprehensive Income) (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Unrealized gains/(losses) on investments available-for-sale Affected line item in the Statements of Income:
Investment securities gains		$ 0	$ 1,273	$ 63	$ 1,275
Income before taxes		0	1,273	63	1,275
Tax expense		$ 0	$ (508)	(16)	(508)
Net income				47	767
Amortization of defined benefit pension plan items Affected line item in the Statements of Income:
Recognized actuarial loss	[1]			(500)	(590)
Income before taxes				(500)	(590)
Tax expense				184	235
Net income/ (Loss)				$ (316)	$ (355)

[1] This amount is included in the computation of net periodic benefit cost, see Note 10.