Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Thousands		3 Months Ended	12 Months Ended
	Mar. 10, 2015 $ / shares shares	Sep. 30, 2017 shares	Dec. 30, 2017 USD ($) plan $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	Jan. 02, 2016 USD ($) $ / shares shares	May 31, 2012 shares
Class of Stock [Line Items]
Number of equity incentive plans | plan			4
Contractual terms of options granted			2 years
Compensation expense | $			$ 12,543	$ 16,213	$ 21,643
Conversion ratio	1.09816
Number of outstanding option (in shares)			12,939,000	12,566,000
Cash used to settle awards | $					3,900
Total unrecognized compensation cost related to unvested employee and director stock options | $			$ 12,400
Total intrinsic value of options exercised | $			2,200	$ 3,300	2,500
Total fair value of options and RSU's vested and expensed | $			$ 12,500	$ 15,600	$ 18,000
Grant date weighted average fair values based on fair value assumptions, options (in dollars per share) | $ / shares			$ 2.02	$ 2.14	$ 2.35
Grant date weighted average fair values based on fair assumptions, non-options (in dollars per share) | $ / shares			$ 0.00	$ 1.82	$ 1.51
Award vesting comparison period			2 years
Exercised, Shares			1,803,000
Granted, Shares			3,732,000
1996 Stock Incentive Plan and the 2001 Stock Plan
Class of Stock [Line Items]
Number of shares available for future awards			0
2012 ESPP
Class of Stock [Line Items]
Number of shares available for future awards			1,900,000
Number of shares authorized						3,000,000
Percentage of employee's compensation maximum for employee share purchases			10.00%
Purchase price of shares as percentage of fair market value			85.00%
Compensation expense | $			$ 0	$ 600	$ 400
2013 Incentive Plan and the 2011 Non-Employee Director Equity Incentive Plan
Class of Stock [Line Items]
Number of shares available for future awards			3,600,000
Employee and Director Stock Options
Class of Stock [Line Items]
Award vesting period			4 years
Number of outstanding option (in shares)	2,087,605		275,991
Weighted average period for recognition			2 years 10 months 3 days
Performance Shares
Class of Stock [Line Items]
Number of outstanding option (in shares)			83,000	0
Number of options outstanding (in shares)			707,000	597,000
Numbers of shares vested			92,000
Exercised, Shares			9,000
Granted, Shares			475,000
Restricted Stock Units (RSUs)
Class of Stock [Line Items]
Award vesting period			4 years
Stock conversion offer price (in dollars per share) | $ / shares	$ 7.30
Number of outstanding option (in shares)	2,025,255		30,679
Grant date weighted average fair values based on fair assumptions, non-options (in dollars per share) | $ / shares			$ 5.83
Unrecognized compensation expense related to unvested RSU's | $			$ 14,400
Granted, Shares					70,000
Executive Officer
Class of Stock [Line Items]
Compensation expense | $			$ 500	$ 800
Numbers of shares vested		0
Awards canceled, Shares		0
Executive Officer | Performance Shares
Class of Stock [Line Items]
Award vesting period			2 years
Award vesting comparison period			2 years
Maximum
Class of Stock [Line Items]
Contractual terms of options granted			10 years
Maximum | Performance Shares
Class of Stock [Line Items]
Award vesting percentage			200.00%
Maximum | Executive Officer | Performance Shares
Class of Stock [Line Items]
Award vesting percentage			200.00%
Minimum | Performance Shares
Class of Stock [Line Items]
Award vesting percentage			0.00%
Minimum | Executive Officer | Performance Shares
Class of Stock [Line Items]
Award vesting percentage			0.00%