Note 7 - Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended March 31,
	2013			2012
Service cost	$	1,057		$	993
Interest cost		970			1,017
Expected return on plan assets		(1,204	)		(1,145	)
Amortization of prior service cost		97			100
Amortization of net loss		776			707
Net periodic benefit cost	$	1,696		$	1,672