Note 4 - Earnings Per Share (Details) - Common Stock Reconciliation of Basic and Diluted Earnings Per Share (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2013	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012
Common Stock Reconciliation of Basic and Diluted Earnings Per Share [Abstract]
Earnings from continuing operations	$ 18.8	$ 16.6	$ 41.7	$ 40.8
Less: Earnings allocated to participating securities	(0.4)	(0.5)	(1.0)	(1.1)
Earnings from continuing operations available to common shareholders	18.4	16.1	40.7	39.7
Earnings from discontinued operations	0	0	0	0.4
Less: Earnings allocated to participating securities	0	0		0
Earnings from discontinued operations available to common shareholders	0	0	0	0.4
Net Earnings	18.8	16.6	41.7	41.2
Less: Earnings allocated to participating securities	(0.4)	(0.5)	(1.0)	(1.1)
Net Earnings available to common shareholders	$ 18.4	$ 16.1	$ 40.7	$ 40.1
Basic earnings per share on common stock:
Earnings from continuing operations (in Dollars per share)	$ 0.49	$ 0.43	$ 1.09	$ 1.07
Earnings from discontinued operations (in Dollars per share)		$ 0		$ 0.01
Net earnings (in Dollars per share)	$ 0.49	$ 0.43	$ 1.09	$ 1.09
Diluted earnings per share on common stock:
Earnings from continuing operations (in Dollars per share)	$ 0.49	$ 0.43	$ 1.09	$ 1.07
Earnings from discontinued operations (in Dollars per share)		$ 0		$ 0.01
Net earnings (in Dollars per share)	$ 0.49	$ 0.43	$ 1.09	$ 1.09
Average common shares outstanding (millions)
Basic (in Shares)	37.4	37.1	37.2	37.0
Diluted (in Shares)	37.4	37.1	37.3	37.0