CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total
Beginning balance at Jan. 03, 2009	$ 563,000	$ 211,767,000	$ (7,318,000)	$ 208,539,000	$ 413,551,000
Income tax benefit from stock-based compensation	0	11,750,000	0	0	11,750,000
Exercise of stock options	15,000	5,087,000	0	0	5,102,000
Restricted stock activity	3,000	(3,000)	0	0	0
Stock-based compensation expense	0	6,012,000	0	0	6,012,000
Issuance of common stock	0	717,000	0	0	717,000
Comprehensive (loss) income:
Net income	0	0	0	115,640,000	115,640,000
Unrealized gain/loss on OshKosh defined benefit plan, net of tax	0	0	2,309,000	0	2,309,000
Unrealized gain/loss on Carter's post-retirement benefit obligation, net of tax	0	0	131,000	0	131,000
Unrealized gain / loss on interest rate swap, net of tax	0	0	405,000	0	405,000
Realized gain/loss on interest rate collar, net of tax	0	0	407,000	0	407,000
Total comprehensive income (loss)	0	0	3,252,000	115,640,000	118,892,000
Ending balance at Jan. 02, 2010	581,000	235,330,000	(4,066,000)	324,179,000	556,024,000
Income tax benefit from stock-based compensation	0	9,249,000	0	0	9,249,000
Exercise of stock options	13,000	9,683,000	0	0	9,696,000
Restricted stock activity	1,000	(1,000)	0	0	0
Stock-based compensation expense	0	6,396,000	0	0	6,396,000
Issuance of common stock	0	850,000	0	0	850,000
Repurchases of common stock	(20,000)	(49,980,000)	0	0	(50,000,000)
Withholdings from vesting of restricted stock	0	(927,000)	0	0	(927,000)
Comprehensive (loss) income:
Net income	0	0	0	146,472,000	146,472,000
Unrealized gain/loss on OshKosh defined benefit plan, net of tax	0	0	1,137,000	0	1,137,000
Unrealized gain/loss on Carter's post-retirement benefit obligation, net of tax	0	0	185,000	0	185,000
Unrealized gain / loss on interest rate swap, net of tax	0	0	688,000	0	688,000
Realized gain / loss on interest rate swap, net of tax	0	0	166,000	0	166,000
Total comprehensive income (loss)	0	0	2,176,000	146,472,000	148,649,000
Ending balance at Jan. 01, 2011	575,000	210,600,000	(1,890,000)	470,651,000	679,936,000
Income tax benefit from stock-based compensation	0	6,900,000	0	0	6,900,000
Exercise of stock options	8,000	6,778,000	0	0	6,786,000
Restricted stock activity	4,000	(4,000)	0	0	0
Stock-based compensation expense	0	8,474,000	0	0	8,474,000
Issuance of common stock	0	1,170,000	0	0	1,170,000
Withholdings from vesting of restricted stock	(1,000)	(2,180,000)	0		(2,181,000)
Comprehensive (loss) income:
Net income	0	0	0	114,016,000	114,016,000
Unrealized gain/loss on OshKosh defined benefit plan, net of tax	0	0	(6,206,000)	0	(6,206,000)
Unrealized gain/loss on Carter's post-retirement benefit obligation, net of tax	0	0	(62,000)	0	(62,000)
Balance	0	0	(3,124,000)	0	(3,124,000)
Total comprehensive income (loss)	0	0	(9,392,000)	114,016,000	104,624,000
Ending balance at Dec. 31, 2011	$ 586,000	$ 231,738,000	$ (11,282,000)	$ 584,667,000	$ 805,709,000