CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
STATEMENTS OF COMPREHENSIVE INCOME
Amortization and reversal of net unrealized loss on securities transferred from available-for-sale to held-to-maturity, taxes	$ (122)	$ (91)	$ (201)
Reduction in non-credit component of otti charge, taxes	(16)	(137)	(585)
Non-credit component of OTTI charge recognized during the period, tax	0	3	11
Reclassification adjustment for securities sold during the period, taxes	50	461	14
Net unrealized securities gains arising during the period, tax	(162)	1,102	615
Defined benefit plan adjustments, tax	$ (3,765)	$ (1,395)	$ 2,933