Associate (Employee) Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2013

Compensation And Retirement Disclosure [Abstract]

Schedule of Net Periodic Benefit Cost Components of Postretirement Benefits

The following disclosures of the net periodic benefit cost components of postretirement benefits were measured at January 1, 2013 and 2012:

	Three months ended March 31,
	2013		2012
(In Thousands)
Service cost	$	86	$	72
Interest cost		44		44
Amortization of transition obligation		—		15
Net loss recognition		20		17
Net periodic benefit cost	$	150	$	148