Note 7 - Employee Benefit Plans

6 Months Ended

Jun. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefits Disclosure [Text Block]

Note 7.   Employee Benefit Plans

We sponsor defined benefit pension plans covering substantially all U.S. employees.  Net periodic pension cost for the plans consisted of the following for the three and six months ended June 30, 2015 and 2014 (in thousands):

	Three Months Ended June 30,
	2015			2014
Service cost	$	1,054		$	1,020
Interest cost		1,206			1,186
Expected return on plan assets		(1,345	)		(1,249	)
Amortization of prior service cost		(84	)		(84	)
Amortization of net (gain) loss		1,065			756
Net periodic pension cost	$	1,896		$	1,629

	Six Months Ended June 30,
	2015			2014
Service cost	$	2,108		$	2,040
Interest cost		2,412			2,372
Expected return on plan assets		(2,691	)		(2,498	)
Amortization of prior service cost		(169	)		(168	)
Amortization of net (gain) loss		2,130			1,512
Net periodic pension cost	$	3,790		$	3,258

In January 2015, we contributed approximately $5.0 million in shares of our common stock to our defined benefit plans, with no additional contributions anticipated in 2015. We expect to contribute approximately $0.4 million to our unfunded supplemental executive retirement plan during 2015.