Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Results of Operations, Income before Income Taxes [Abstract]
Domestic	$ (32,503)	$ (92,737)	$ 6,292
Foreign	(10,220)	(33,464)	36,649
(Loss) income before income taxes and equity in net loss of an unconsolidated affiliate	(42,723)	(126,201)	42,941
Current:
Federal	1,896	968	329
State	13	80	5
Foreign	7,918	10,634	1,944
Current income tax (provision) benefit	9,827	11,682	2,278
Deferred:
Federal	0	18,713	(7,416)
State	0	2,318	(513)
Foreign	90	(173)	12
Deferred income tax (provision) benefit	90	20,858	(7,917)
Income tax expense (benefit)	$ 9,917	$ 32,540	$ (5,639)
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Statutory federal rate	35.00%	35.00%	35.00%
State taxes, net	(7.00%)	6.00%	1.00%
Research and development credits	2.00%	3.00%	(9.00%)
Stock compensation	(3.00%)	(1.00%)	1.00%
Foreign rate differential	(14.00%)	(12.00%)	(25.00%)
Foreign dividends	0.00%	(5.00%)	1.00%
Foreign withholding taxes	(9.00%)	(3.00%)	0.00%
Capital loss expiration	0.00%	0.00%	7.00%
Other permanent	(3.00%)	(4.00%)	0.00%
Goodwill impairment	0.00%	(4.00%)	0.00%
Valuation allowance	(17.00%)	(46.00%)	(23.00%)
Change in uncertain tax benefit accrual	(5.00%)	8.00%	1.00%
Tax rate change	0.00%	(3.00%)	(4.00%)
Other	(2.00%)	0.00%	2.00%
Effective income tax rate	(23.00%)	(26.00%)	(13.00%)