CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Adjustments	Common stock	Additional Paid-in Capital	Accumulated other comprehensive income (loss)	Retained Earnings (Accumulated Deficit)	Retained Earnings (Accumulated Deficit) Adjustments	Treasury stock
Beginning balance at Dec. 30, 2018	$ 717,223	$ 115	$ 605	$ 721,605	$ (6,881)	$ 3,767	$ 115	$ (1,873)
Beginning balance (in shares) at Dec. 30, 2018			60,508,249					201,963
Increase (Decrease) in Stockholders' Equity
Net loss	(24,754)					(24,754)
Restricted share grants			$ 3	(3)
Restricted share grants (in shares)			299,610
Other comprehensive income, net of income tax	(90)				(90)
Equity-based compensation expense	2,534			2,534
Purchase of treasury stock	(716)							$ (716)
Purchase of treasury stock (in shares)								54,320
Restricted share forfeiture (in shares)								70,459
Dividends declared	(68,854)			(68,854)
Ending balance at Sep. 29, 2019	625,458		$ 608	655,282	(6,971)	(20,872)		$ (2,589)
Ending balance (in shares) at Sep. 29, 2019			60,807,859					326,742
Beginning balance at Jun. 30, 2019	666,262		$ 608	677,574	(6,938)	(2,409)		$ (2,573)
Beginning balance (in shares) at Jun. 30, 2019			60,806,451					324,777
Increase (Decrease) in Stockholders' Equity
Net loss	(18,463)					(18,463)
Restricted share grants (in shares)			1,408
Other comprehensive income, net of income tax	(33)				(33)
Equity-based compensation expense	691			691
Purchase of treasury stock	(16)							$ (16)
Purchase of treasury stock (in shares)								1,599
Restricted share forfeiture (in shares)								366
Dividends declared	(22,983)			(22,983)
Ending balance at Sep. 29, 2019	625,458		$ 608	655,282	(6,971)	(20,872)		$ (2,589)
Ending balance (in shares) at Sep. 29, 2019			60,807,859					326,742
Beginning balance at Dec. 31, 2019	981,356		$ 1,294	1,090,694	8,202	(115,958)		$ (2,876)
Beginning balance (in shares) at Dec. 31, 2019			129,386,258					394,714
Increase (Decrease) in Stockholders' Equity
Net loss	(548,305)					(548,305)
Restricted share grants			$ 44	(44)
Restricted share grants (in shares)			4,346,313
Restricted stock awards settled, net of withholdings	(10,788)		$ 31	(10,819)
Restricted stock awards settled, net of withholdings (in shares)			3,072,991
Other comprehensive income, net of income tax	(14,613)				(14,613)
Equity-based compensation expense	22,812			22,812
Issuance of common stock	1,615		$ 6	1,609
Issuance of common stock (in shares)			673,134
Remeasurement of redeemable noncontrolling interests	(3,878)			(3,878)
Purchase of treasury stock	(1,960)							$ (1,960)
Purchase of treasury stock (in shares)								322,524
Restricted share forfeiture	(5)							$ (5)
Restricted share forfeiture (in shares)								455,738
Other activity	(105)			(105)
Ending balance at Sep. 30, 2020	426,129		$ 1,375	1,100,269	(6,411)	(664,263)		$ (4,841)
Ending balance (in shares) at Sep. 30, 2020			137,478,696					1,172,976
Beginning balance at Jun. 30, 2020	452,085		$ 1,369	1,101,899	(13,362)	(633,003)		$ (4,818)
Beginning balance (in shares) at Jun. 30, 2020			136,885,320					770,973
Increase (Decrease) in Stockholders' Equity
Net loss	(31,260)					(31,260)
Restricted stock awards settled, net of withholdings	(860)		$ 6	(866)
Restricted stock awards settled, net of withholdings (in shares)			564,406
Other comprehensive income, net of income tax	6,951				6,951
Equity-based compensation expense	3,844			3,844
Issuance of common stock	(961)			(961)
Issuance of common stock (in shares)			28,970
Remeasurement of redeemable noncontrolling interests	(3,878)			(3,878)
Purchase of treasury stock	(19)							$ (19)
Purchase of treasury stock (in shares)								4,837
Restricted share forfeiture	(4)							$ (4)
Restricted share forfeiture (in shares)								397,166
Other activity	231			231
Ending balance at Sep. 30, 2020	$ 426,129		$ 1,375	$ 1,100,269	$ (6,411)	$ (664,263)		$ (4,841)
Ending balance (in shares) at Sep. 30, 2020			137,478,696					1,172,976