Consolidated Statements of Comprehensive Income (Parentheticals) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Amortization of prior service credit included in net periodic cost, tax effect	$ (867)	$ (871)	$ (1,734)	$ (1,741)
Amortization of actuarial loss included in net periodic cost, tax effect	$ 1,568	$ 2,267	$ 3,245	$ 4,513