CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - USD ($) $ in Thousands, shares in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CONSOLIDATED STATEMENTS OF EQUITY [Abstract]
Net unrealized gains on securities available for sale, income tax expense (benefit)	$ 1,446	$ 1,857	$ (3,213)
Amount reclassified from accumulated and other comprehensive income, income tax expense (benefit)	$ (1,156)	$ (464)	$ (1,662)
Dividends declared (in dollars per share)	$ 0.08	$ 0.08	$ 0.28
Tax benefit from exercise of stock options			$ 102
Issuance of treasury shares (in shares)			4.4