Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2012

Supplemental Executive Retirement Plan

Components of Net Period Benefit Cost

The components of net period benefit cost for the three- and nine-month periods ended September 30, 2012 and 2011 were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Net period benefit cost
Service cost	$	67	$	58	$	201	$	174
Interest cost		102		108		306		324
Recognized net actuarial loss		29		17		87		51
Recognized prior service cost		5		4		15		12
Net period benefit cost	$	203	$	187	$	609	$	561

Other Postretirement Benefit Plan

Components of Net Period Benefit Cost

The components of net period benefit cost for the three- and nine-month periods ended September 30, 2012 and 2011 were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Net period benefit cost
Service cost	$	17	$	16	$	51	$	48
Interest cost		37		38		111		114
Recognized net actuarial loss		8		—		24		—
Net period benefit cost	$	62	$	54	$	186	$	162