Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock Capital Stock, Class A common stock	Common Stock Capital Stock, Class B common stock	Treasury Stock Treasury Stock, Class A common stock	Treasury Stock Treasury Stock, Class B common stock	Paid-in Capital	Earnings Invested in the Business	Accumulated Other Comprehensive Income
Beginning balance at Dec. 28, 2014		$ 36.6	$ 3.5	$ (49.2)	$ (0.6)	$ 24.9	$ 767.4	$ 51.1
Increase (Decrease) in Stockholders' Equity
Issuance of restricted stock and other				0.8	0.0	2.6
Net earnings	$ 10.5						10.5
Dividends							(3.8)
Other comprehensive income, net of tax	0.7							0.7
Ending balance at Jun. 28, 2015	844.5	36.6	3.5	(48.4)	(0.6)	27.5	774.1	51.8
Beginning balance at Mar. 29, 2015		36.6	3.5	(49.1)	(0.6)	25.9	769.2	45.6
Increase (Decrease) in Stockholders' Equity
Issuance of restricted stock and other				0.7	0.0	1.6
Net earnings	6.8						6.8
Dividends							(1.9)
Other comprehensive income, net of tax	6.2							6.2
Ending balance at Jun. 28, 2015	844.5	36.6	3.5	(48.4)	(0.6)	27.5	774.1	51.8
Beginning balance at Jan. 03, 2016	895.4	36.6	3.5	(43.7)	(0.6)	25.4	813.5	60.7
Increase (Decrease) in Stockholders' Equity
Issuance of restricted stock and other				2.2	0.0	2.7
Net earnings	20.1						20.1
Dividends							(4.8)
Other comprehensive income, net of tax	18.5							18.5
Ending balance at Jul. 03, 2016	934.1	36.6	3.5	(41.5)	(0.6)	28.1	828.8	79.2
Beginning balance at Apr. 03, 2016		36.6	3.5	(43.1)	(0.6)	27.4	822.8	64.2
Increase (Decrease) in Stockholders' Equity
Issuance of restricted stock and other				1.6	0.0	0.7
Net earnings	8.9						8.9
Dividends							(2.9)
Other comprehensive income, net of tax	15.0							15.0
Ending balance at Jul. 03, 2016	$ 934.1	$ 36.6	$ 3.5	$ (41.5)	$ (0.6)	$ 28.1	$ 828.8	$ 79.2