FAIR VALUES OF FINANCIAL INSTRUMENTS (Reconciliation of All Assets Measured at Fair Value on a Recurring Basis using Significant Unobservable Inputs (Level 3)) (Details) - State and Municipal Securities [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Balance of recurring Level 3 assets at January 1	$ 551	$ 850
Transfers into Level 3	339	0
Changes in fair value of securities included in other comprehensive income	(10)	(4)
Principal payments	(210)	(295)
Sales	0	0
Balance of recurring Level 3 assets at December 31	$ 670	$ 551