INCOME TAXES - NOL Carryforwards (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016
INCOME TAXES
Net operating loss carryforwards	$ 584,900
Federal tax effected amount of NOL before adjustment	204,700
Cumulative amount of tax deductions related to share-based compensation and the corresponding compensation expense adjustment for financial reporting	113,800
Cumulative federal tax effected amount of tax deductions related to share-based compensation and the corresponding compensation expense adjustment for financial reporting	39,800
Deferred tax assets related to net operating loss carryforwards for state income tax purpose	52,800
Deferred tax assets related to net operating loss carryforwards
Deferred tax assets related to net operating loss carryforwards for foreign income tax purpose	16,000
Deferred tax assets related to net operating loss carryforwards	229,297	$ 280,280
Deferred tax assets related to net operating loss carryforwards for federal income tax purpose	164,900
Deferred tax assets related to net operating loss carryforwards for state and local income tax purpose	48,400
Valuation allowance	372,521	$ 425,761
Total decrease in the valuation allowance	$ 53,200