CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net income	$ 14,654	$ 20,330
OTHER COMPREHENSIVE INCOME (LOSS)
Unrealized holding gains on investment securities, net of deferred income tax expense of $6,610 and $2,689	12,275	4,993
Reclassification adjustment for realized investment gains included in net income, net of income tax expense of $(290) and $(764)	(539)	(1,418)
Reclassification adjustment for amounts amortized into net periodic pension and postretirement benefit income, net of deferred income tax expense of $(136) and $(190):
Net actuarial loss	279	184
Prior service credit	(531)	(537)
Total reclassification adjustment associated with affiliate's pension and postretirement benefit plans	(252)	(353)
Other comprehensive income (loss)	11,484	3,222
Total comprehensive income	$ 26,138	$ 23,552