Stockholders' Equity - Additional Information (Details) (USD $)	12 Months Ended			1 Months Ended		12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012	Feb. 29, 2012	Jan. 31, 2012	Dec. 26, 2009	Dec. 26, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock payroll deduction price percentage of lover of fair market value	85.00%
Employee payroll deduction limit	15.00%
Maximum employee stock purchase	$ 25,000
Closing price of common stock	$ 14.91						$ 14.91
Weighted-average remaining contractual term	3 years 10 months 24 days
Fair value of stock options granted	800,000	3,200,000	10,000,000
Number of shares available for grant cost	2,700,000	3,600,000	3,600,000
Multiple of shares issued upon restated stock option and incentive plan		0.5
Number of shares to be purchased on exercise of warrants	0	92,592
Exercise of warrants value		500,000
Employee stock options [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of future options grants				7 years	10 years
Restricted stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amortization of stock based compensation	21,600,000	23,800,000	27,900,000
Number of Performance Stock Units, granted	2,705,000	3,602,000	3,620,000
Number of shares released under PSUs	2,797,000	3,070,000	2,495,000
Performance Stock Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of PSUs to executive officers	100,000
Expense included in amortization of stock-based compensation		2,100,000
Decrease in fair value included in amortization of stock-based compensation		(1,400,000)
Performance stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amortization of stock based compensation	$ 2,200,000	$ 700,000	$ 3,300,000
Shares of PSUs to executive officers			500,000
Number of Performance Stock Units, granted	508,000	552,000	515,000
Number of shares released under PSUs	255,000	684,000	883,000
Performance stock units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ranges of number of shares issued on vesting of PSUs	0	0				0.5
Performance stock units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ranges of number of shares issued on vesting of PSUs	1.5	1.5				2.0
Amended Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate reserved common stock for issuance	14,200,000
Options to purchase	800,000
2007 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reserved Common stock for issuance of options	46,800,000
2007 Plan maximum term	10 years
Authorized issuance of common stock shares	16,600,000
Duration of ESPP	20 years
Granted options to employees to purchase shares of common stock	17,300,000
2007 Plan [Member] | Performance stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Performance Stock Units, granted		600,000
Fiscal Year 2014 Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares released under PSUs	300,000
Award granted in 2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares released under PSUs		500,000
Nasdaq Telecom Composite Index [Member] | Two Thousand And Seven Equity Incentive Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Ranges of number of shares issued on vesting of PSUs	1.5
IGN Index [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of PSUs to executive officers	400,000