CONSOLIDATED STATEMENT OF SHAREHOLDERS EQUITY PARENTHETICAL - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Stockholders' Equity [Abstract]
Deferred income tax on unrealized gain on securities	$ 900	$ 173	$ (1,076)
Reclassification adjustments netted against unrealized gain on securities	$ 297	$ 741	$ 4,646