Retirement Plans

6 Months Ended

Jun. 30, 2012

Retirement Plans

9. Retirement Plans

Certain of the Company’s United States employees participate in a defined-benefit pension plan that closed to new participants effective January 1, 1995. The Company has a nonqualified, unfunded supplemental retirement plan, as well as a postretirement healthcare plan for eligible retired employees who participate in the pension plan and were hired before January 1, 1992. The components of periodic benefit costs for the defined-benefit pension, postretirement healthcare and supplemental retirement plans were as follows for the three and six-month periods ended June 30, 2012, and 2011 (in thousands):

	Defined-Benefit Pension Plan Three-Month Period Ended June 30,						Postretirement Healthcare Plan Three-Month Period Ended June 30,				Supplemental Retirement Plan Three-Month Period Ended June 30,
	2012			2011			2012		2011		2012		2011
Service cost	$	216		$	193		$	10	$	9	$	8	$	5
Interest cost		477			455			18		21		40		40
Expected return on plan assets		(509	)		(513	)		—		—		—		—
Amortization of net loss		470			343			5		7		48		38
Net periodic benefit cost	$	654		$	478		$	33	$	37	$	96	$	83

	Defined-Benefit Pension Plan Six-Month Period Ended June 30,						Postretirement Healthcare Plan Six-Month Period Ended June 30,				Supplemental Retirement Plan Six-Month Period Ended June 30,
	2012			2011			2012		2011		2012		2011
Service cost	$	431		$	387		$	18	$	19	$	15	$	10
Interest cost		953			910			36		41		80		80
Expected return on plan assets		(1,018	)		(1,026	)		—		—		—		—
Amortization of net loss		943			685			11		14		96		76
Net periodic benefit cost	$	1,309		$	956		$	65	$	74	$	191	$	166