Pensions and Other Postretirement Benefits

3 Months Ended

Mar. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Pensions and Other Postretirement Benefits

Defined Benefit Plan

We provide a non-contributory defined benefit pension plan for substantially all of our Dutch employees ("Dutch Plan") who were hired prior to 2007 based on years of service and final pay or career average pay, depending on when the employee began participating. The benefits earned by the employees are immediately vested.

The following table summarizes the components of net periodic pension cost under the Dutch Plan for the three months ended March 31, 2015 and 2014 (in thousands):

	Three Months Ended
	March 31,
	2015			2014
Service cost	$	463		$	370
Interest cost	309			450
Expected return on plan assets	(256		)	(334		)
Amortization of transition asset	(22		)	(22		)
Amortization of prior service cost	(19		)	2
Amortization of actuarial loss	183			135
Net periodic pension cost	$	658		$	601

During the three months ended March 31, 2015, we contributed approximately $0.8 million to fund the estimated 2015 premiums on investment contracts held by the Dutch Plan.

Defined Contribution Plans

We maintain defined contribution plans for the benefit of eligible employees in certain countries including Canada, The Netherlands, the United Kingdom, and the United States.

Deferred Compensation Arrangements

We have entered into deferred compensation contracts for certain key employees. The benefits under these contracts are fully vested and benefits are paid when the participants attain 65 years of age.

We have adopted a non-qualified deferred compensation plan that allows certain highly compensated employees to defer a portion of their salary, commission and bonus, as well as the amount of any reductions in their deferrals under the deferred compensation plan for employees in the United States, due to certain limitations imposed by the U.S. Internal Revenue Code of 1986, as amended.