Goodwill and Other Intangible Assets (Other Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jul. 03, 2011	Jan. 02, 2011
Gross Carrying Amount	$ 170,179	$ 161,519
Accumulated Amortization	111,155	100,277
Net Carrying Amount	59,024	61,242
Indefinite-lived intangible assets, Gross Carrying Amount	536,802	530,816
Non-compete Agreements [Member]
Useful Life, minimum (in years)	2
Useful Life, maximum (in years)	5
Gross Carrying Amount	44,033	43,940
Accumulated Amortization	38,985	33,570
Net Carrying Amount	5,048	10,370
Student and Customer Relationships [Member]
Useful Life, minimum (in years)	2
Useful Life, maximum (in years)	10
Gross Carrying Amount	75,929	66,510
Accumulated Amortization	44,466	41,958
Net Carrying Amount	31,463	24,552
Databases and Technology [Member]
Useful Life, minimum (in years)	3
Useful Life, maximum (in years)	5
Gross Carrying Amount	10,514	10,514
Accumulated Amortization	4,861	2,921
Net Carrying Amount	5,653	7,593
Trade Names and Trademarks [Member]
Useful Life, minimum (in years)	2
Useful Life, maximum (in years)	10
Gross Carrying Amount	29,618	29,053
Accumulated Amortization	17,062	15,330
Net Carrying Amount	12,556	13,723
Other Amortized Intangible Assets [Member]
Useful Life, minimum (in years)	1
Useful Life, maximum (in years)	25
Gross Carrying Amount	10,085	11,502
Accumulated Amortization	5,781	6,498
Net Carrying Amount	4,304	5,004
Franchise Agreements [Member]
Indefinite-lived intangible assets, Gross Carrying Amount	496,166	496,166
Wireless Licenses [Member]
Indefinite-lived intangible assets, Gross Carrying Amount	22,150	22,150
Licensure and Accreditation [Member]
Indefinite-lived intangible assets, Gross Carrying Amount	7,878	7,877
Other Indefinite-Lived Intangible Assets [Member]
Indefinite-lived intangible assets, Gross Carrying Amount	$ 10,608	$ 4,623