Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net income		$ 25,780	$ 21,583	$ 72,087	$ 62,654
Unrealized gain from securities:
Net unrealized holding loss from available for sale securities arising during the period		10,126	(4,057)	8,161	11,830
Reclassification adjustment of net gain from sale of available for sale securities included in income		(151)	(21)	(829)	(352)
Net unrealized gain from securities, net of reclassification adjustment		9,975	(4,078)	7,332	11,478
Pension plan liability adjustment:
Unrecognized net actuarial gain (loss) during the period				(280)	0
Less: amortization of unrecognized net actuarial loss included in net periodic pension cost		62	23	153	71
Pension plan liability adjustment, net		62	23	(127)	71
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	[1]	10,037	(4,055)	7,205	11,549
Total comprehensive income		$ 35,817	$ 17,528	$ 79,292	$ 74,203

[1] All amounts are net of tax. Amounts in parenthesis indicate debits.