CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net income	$ 11,164	$ 10,457	$ 20,543	$ 18,681
Other comprehensive income:
Net unrealized holding (losses) gains on available for sale securities during the period	(14,915)	8,308	(5,395)	18,319
Change in net unrealized loss on securities transferred to held to maturity	244	278	526	554
Reclassification adjustment for net gain on sale of available for sale securities, included in net income	(105)	(498)	(2,581)	(509)
Amortization of net actuarial loss, included in net periodic benefit cost	614	289	1,145	521
Amortization of prior service credit, included in net periodic benefit cost	(4)	(4)	(8)	(7)
Other comprehensive (loss) income, before tax	(14,166)	8,373	(6,313)	18,878
Income tax benefit (expense) related to other items of comprehensive income	4,959	(2,930)	2,210	(6,607)
Other comprehensive (loss) income, net of tax	(9,207)	5,443	(4,103)	12,271
Comprehensive income	$ 1,957	$ 15,900	$ 16,440	$ 30,952