Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Amortization of prior service credit included in net periodic cost, tax effect	$ (850)	$ (867)	$ (2,547)	$ (2,601)
Amortization of actuarial loss included in net periodic cost, tax effect	$ 2,009	$ 1,621	$ 5,846	$ 4,866