Associate (Employee) Benefit Plans (Tables)

6 Months Ended

Jun. 30, 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 June 30,				Six months ended June 30,
	2013		2012		2013		2012
(In Thousands)
Service cost	$	86	$	72	$	172	$	144
Interest cost		44		43		88		87
Amortization of transition obligation		—		15		—		30
Net loss recognition		20		17		40		34
Net periodic benefit cost	$	150	$	147	$	300	$	295