ACCOUNTING POLICIES (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) Property
Impact of Recently Issued Accounting Standards [Abstract]
Number of properties leased | Property	10
Accounting Standards Update 2018-02 [Member] | Accumulated Other Comprehensive Income/(Loss) [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Certain tax effects on reclassification from retained earnings to accumulated other comprehensive income as a result from Tax Cuts and Jobs Act	$ (599)
Accounting Standards Update 2018-02 [Member] | Unrealized Loss on Investment Securities [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Certain tax effects on reclassification from retained earnings to accumulated other comprehensive income as a result from Tax Cuts and Jobs Act	(473)
Accounting Standards Update 2018-02 [Member] | Unrealized Loss on Retirement Plans [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Certain tax effects on reclassification from retained earnings to accumulated other comprehensive income as a result from Tax Cuts and Jobs Act	$ (126)