The components of net periodic benefit cost for the three and six months ended June 30, 2014 and June 30, 2013 are as follows:

	Three Months Ended June 30,								Six Months Ended June 30,
					Other								Other
					Postretirement								Postretirement
	Pension Benefits				Benefits				Pension Benefits				Benefits
		2014		2013		2014		2013		2014		2013		2014		2013
Service cost	$	736	$	728	$	2	$	4	$	1,470	$	1,566	$	10	$	17
Interest cost and other		1,519		1,398		62		36		3,061		2,778		116		92
Expected return on plan assets		(1,601)		(1,463)		0		0		(3,208)		(2,941)		0		0
Actuarial loss amortization		759		991		26		(31)		1,548		1,972		32		16
Prior service cost amortization		(15)		104		0		0		851		132		0		0
Net periodic benefit cost	$	1,398	$	1,758	$	90	$	9	$	3,722	$	3,507	$	158	$	125

During 2013, it was discovered that the Company's subsidiary in the United Kingdom did not appropriately amend a trust for a legacy change in its pension scheme, as it related to a past retirement age equalization law. Given the lack of an official deed to the pension trust, the effective date of the change to the Subsidiary's pension scheme differed from the Company's historical beliefs, but the extent of the potential exposure was not estimable. In the first quarter of 2014, the Company recorded costs of $902, or $0.05 per diluted share, related to prior service cost and interest cost, to appropriately reflect the past plan amendment related to the retirement age equalization law.

The Company previously disclosed in its financial statements for the year ended December 31, 2013, that it expected to make minimum cash contributions of $6,172 to its pension plans and $607 to its other postretirement benefit plan in 2014. As of June 30, 2014, $4,506 and $328 of contributions had been made to the Company's pension plans and its other postretirement benefit plans, respectively.