Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net Income	$ 3,879	$ 3,219	$ 23,104	$ 19,006
Employee Benefits, net of tax:
Amortization of prior service cost, net of tax of ($6), ($6), ($18) and ($19), respectively	(9)	(9)	(27)	(28)
Net gain, net of tax of $43, $51, $124 and $152, respectively	64	76	186	228
Total other comprehensive income	55	67	159	200
Comprehensive Income	$ 3,934	$ 3,286	$ 23,263	$ 19,206