Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net Income	$ 17,681	$ 14,869
Employee Benefits, net of tax:
Amortization of prior service cost, net of tax of ($6) and ($6), respectively	9	9
Net gain, net of tax of $27 and $38, respectively	40	58
Total other comprehensive income	31	49
Comprehensive Income	$ 17,712	$ 14,918