Income Taxes (Schedule of Deferred Tax Assets and Deferred Tax Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011
Deferred tax assets:
Accrued expenses	$ 20,346	$ 18,597
Separate return net operating losses	21,412	16,757
Share based compensation	35,323	26,462
Contract and service revenues and costs	17,339	25,022
Other	6,890	5,410
Total deferred tax assets	101,310	92,248
Deferred tax liabilities:
Software development costs	(101,393)	(91,267)
Depreciation and amortization	(96,695)	(85,746)
Other	(5,537)	(4,029)
Total deferred tax liabilities	(203,625)	(181,042)
Net deferred tax liability	$ (102,315)	$ (88,794)