Note 5 - Retirement Plans

3 Months Ended

Mar. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefits Disclosure [Text Block]

5. Retirement Plans

The following table provides the components of net periodic benefit cost for our pension plans for the three- month periods ended March 31, 2015 and 2014, respectively (in thousands):

	Three Months Ended March 31,
	2015			2014
Service cost	$	1,711		$	1,345
Interest cost		1,254			1,070
Expected return on plan assets		(1,404	)		(1,094	)
Loss amortization		840			252
Net periodic benefit cost	$	2,401		$	1,573

During the three months ended March 31, 2015, we did not make a contribution to our pension plans. During the remainder of 2015, we expect to contribute between $2.0 million and $5.3 million to our pension plans.