Note 5 - Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2012

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2012			2011			2012			2011
Service cost	$	1,243		$	568		$	3,538		$	2,701
Interest cost		899			996			2,559			2,502
Expected return on plan assets		(739	)		(780	)		(2,104	)		(2,014	)
Loss amortization		624			496			1,775			805
Net periodic benefit cost	$	2,027		$	1,280		$	5,768		$	3,994