Note 9 - 401(k) Profit Sharing, Deferred Compensation and Long-term Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

Schedule of Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits by Title of Individual and Type of Deferred Compensation [Table Text Block]

Year Ended December 31,	2015			2014			2013
Compensation expense (in millions)	$	1.8		$	1.9		$	1.4
Total discretionary contribution (in millions)	$	2.2		$	2.4		$	2.1
Guaranteed annual return		5.25	%		5.25	%		5.25	%