CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIT - USD ($) $ in Thousands	Common Class A Common Stock	Common Class B Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total
Stockholders' Equity Attributable to Parent, Beginning Balance at Dec. 30, 2018	$ 53	$ 24	$ 2,216,681	$ (1,954,132)	$ (604,289)	$ (2)	$ (341,665)
Changes in stockholders' equity
Net income loss				(41,956)			(41,956)
Other comprehensive income					22,552		22,552
Issuance of shares	2		(2)
Stock compensation expense			663				663
Purchase of shares of treasury stock						(268)	(268)
Stockholders' Equity Attributable to Parent, Ending Balance at Mar. 31, 2019	55	24	2,217,342	(1,996,065)	(581,737)	(270)	(360,651)
Changes in stockholders' equity
Cumulative effect adjustment of new accounting pronouncement | ASU 2014-09				23			23
Stockholders' Equity Attributable to Parent, Beginning Balance at Dec. 29, 2019	55	24	2,217,823	(2,365,216)	(576,139)	(3)	(723,456)
Changes in stockholders' equity
Net income loss				(178,653)			(178,653)
Other comprehensive income					6,735		6,735
Stock compensation expense			406				406
Stockholders' Equity Attributable to Parent, Ending Balance at Mar. 29, 2020	$ 55	$ 24	$ 2,218,229	$ (2,543,869)	$ (569,404)	$ (3)	$ (894,968)