CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) [Abstract]
Amortization and reversal of net unrealized loss on securities transferred from available-for-sale to held-to-maturity, deferred tax expense	$ 6	$ 10	$ 11	$ 21
Reduction in (adjustment to) non-credit component of other than temporary impairment ("OTTI") charge, deferred tax expense (benefit)	4	(16)	8	(12)
Reclassification adjustment for securities sold during the period, income tax expense (benefit)		2		(624)
Net unrealized securities gains (losses) arising during the period, deferred tax expense (benefit)	21	(2)	28	15
Net unrealized derivative liability loss arising during the period, deferred tax benefit	431		431
Change in pension and other postretirement obligations, during the period, deferred tax expense (benefit)	$ 191	$ 210	$ 382	$ (58)