CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY AND SERIES A CONVERTIBLE PREFERRED STOCK - USD ($)	Common Stock Cumulative effect of adopting ASU 2020-06, adjusted balance	Common Stock	Additional Paid-in Capital Cumulative effect of adopting ASU 2020-06, adjusted balance	Additional Paid-in Capital	Retained Earnings Cumulative effect of adopting ASU 2020-06	Retained Earnings Cumulative effect of adopting ASU 2020-06, adjusted balance	Retained Earnings	Treasury Stock Cumulative effect of adopting ASU 2020-06, adjusted balance	Treasury Stock	Accumulated Other Comprehensive Loss Cumulative effect of adopting ASU 2020-06, adjusted balance	Accumulated Other Comprehensive Loss	Cumulative effect of adopting ASU 2020-06 Series A Convertible Preferred stock	Cumulative effect of adopting ASU 2020-06	Cumulative effect of adopting ASU 2020-06, adjusted balance Series A Convertible Preferred stock	Cumulative effect of adopting ASU 2020-06, adjusted balance	Series A Convertible Preferred stock	Total
Increase (Decrease) in Stockholders' Equity
Cumulative effect of adopting ASU 2020-06		$ 977,000		$ 855,989,000			$ 1,408,333,000		$ (1,693,122,000)		$ (435,000)						$ 571,742,000
Balance (as adjusted) (in shares)		97,685
Beginning balance at Dec. 31, 2019		$ 977,000		855,989,000			1,408,333,000		(1,693,122,000)		(435,000)						571,742,000
Beginning balance (in shares) at Dec. 31, 2019		97,685
Increase (Decrease) in Stockholders' Equity
Net income/(loss)		$ 0		0			(136,163,000)		0		0					$ 0	(136,163,000)
Foreign currency translation adjustment											(936,000)						(936,000)
Change in derivative, net of tax											(2,370,000)						(2,370,000)
Cash dividends declared common stock							(16,376,000)										(16,376,000)
Stock-based compensation		$ 6,000		5,541,000													5,547,000
Stock-based compensation (in shares)		566
Common stock issued under stock-based compensation plans		$ 2,000		111,000													113,000
Common stock issued under stock-based compensation plans (in shares)		203
Treasury stock purchases									(2,586,000)								(2,586,000)
Ending balance at Mar. 31, 2020		$ 985,000		861,641,000			1,255,794,000		(1,695,708,000)		(3,741,000)						418,971,000
Ending balance (in shares) at Mar. 31, 2020		98,454
Beginning balance at Dec. 31, 2019		$ 977,000		855,989,000			1,408,333,000		(1,693,122,000)		(435,000)						571,742,000
Beginning balance (in shares) at Dec. 31, 2019		97,685
Increase (Decrease) in Stockholders' Equity
Net income/(loss)																	(192,702,000)
Foreign currency translation adjustment																	(532,000)
Change in derivative, net of tax																	(3,837,000)
Preferred stock direct costs.																	(10,257,000)
Ending balance at Jun. 30, 2020		$ 985,000		866,803,000			1,184,919,000		(1,695,974,000)		(4,804,000)					$ 204,079,000	351,929,000
Ending balance (in shares) at Jun. 30, 2020		98,465														204
Increase (Decrease) in Stockholders' Equity
Cumulative effect of adopting ASU 2020-06		$ 985,000		861,641,000			1,255,794,000		(1,695,708,000)		(3,741,000)						418,971,000
Balance (as adjusted) (in shares)		98,454
Beginning balance at Mar. 31, 2020		$ 985,000		861,641,000			1,255,794,000		(1,695,708,000)		(3,741,000)						418,971,000
Beginning balance (in shares) at Mar. 31, 2020		98,454
Increase (Decrease) in Stockholders' Equity
Net income/(loss)							(56,539,000)										(56,539,000)
Foreign currency translation adjustment											404,000						404,000
Change in derivative, net of tax											(1,467,000)						(1,467,000)
Stock-based compensation				5,162,000													5,162,000
Stock-based compensation (in shares)		(24)
Common stock issued under stock-based compensation plans (in shares)		35
Treasury stock purchases									(266,000)								(266,000)
Series A preferred stock issuance																$ 189,743,000
Series A preferred stock issuance (in shares)																200
Preferred stock direct costs.							(10,257,000)									$ 10,257,000	(10,257,000)
Paid-in-kind preferred stock dividend beneficial conversion feature							(4,079,000)									$ 4,079,000	(4,079,000)
Paid-in-kind preferred stock dividend, including beneficial conversion feature (in shares)																4
Ending balance at Jun. 30, 2020		$ 985,000		866,803,000			1,184,919,000		(1,695,974,000)		(4,804,000)					$ 204,079,000	351,929,000
Ending balance (in shares) at Jun. 30, 2020		98,465														204
Increase (Decrease) in Stockholders' Equity
Cumulative effect of adopting ASU 2020-06		$ 985,000		866,803,000			1,184,919,000		(1,695,974,000)		(4,804,000)					$ 204,079,000	351,929,000
Balance (as adjusted) (in shares)		98,465														204
Cumulative effect of adopting ASU 2020-06	$ 986,000	$ 986,000	$ 878,148,000	878,148,000	$ 4,763,000	$ 1,114,850,000	1,110,087,000	$ (1,696,743,000)	(1,696,743,000)	$ (3,785,000)	(3,785,000)	$ (4,763,000)	$ 4,763,000	$ 213,485,000	$ 293,456,000	$ 218,248,000	288,693,000
Balance (as adjusted) (in shares)	98,645	98,645												200		200
Beginning balance at Dec. 29, 2020	$ 986,000	$ 986,000	878,148,000	878,148,000	4,763,000	1,114,850,000	1,110,087,000	(1,696,743,000)	(1,696,743,000)	(3,785,000)	(3,785,000)	(4,763,000)	4,763,000	$ 213,485,000	293,456,000	$ 218,248,000	288,693,000
Beginning balance (in shares) at Dec. 29, 2020	98,645	98,645												200		200
Increase (Decrease) in Stockholders' Equity
Net income/(loss)							3,868,000										3,868,000
Foreign currency translation adjustment											174,000						174,000
Change in derivative, net of tax											1,738,000						1,738,000
Cash dividends declared common stock							399,000										399,000
Stock-based compensation		$ 3,000		5,480,000													5,483,000
Stock-based compensation (in shares)		293
Common stock issued under stock-based compensation plans		$ 6,000		20,417,000													20,423,000
Common stock issued under stock-based compensation plans (in shares)		570
Treasury stock purchases									(3,957,000)								(3,957,000)
Cash dividend declared Series A preferred stock, $25.35 per share							(5,070,000)										(5,070,000)
Ending balance at Mar. 30, 2021		$ 995,000		904,045,000			1,114,047,000		(1,700,700,000)		(1,873,000)					$ 213,485,000	316,514,000
Ending balance (in shares) at Mar. 30, 2021		99,508														200
Beginning balance at Dec. 29, 2020	$ 986,000	$ 986,000	$ 878,148,000	878,148,000	$ 4,763,000	$ 1,114,850,000	1,110,087,000	$ (1,696,743,000)	(1,696,743,000)	$ (3,785,000)	(3,785,000)	$ (4,763,000)	$ 4,763,000	$ 213,485,000	$ 293,456,000	$ 218,248,000	288,693,000
Beginning balance (in shares) at Dec. 29, 2020	98,645	98,645												200		200
Increase (Decrease) in Stockholders' Equity
Net income/(loss)																	37,583,000
Foreign currency translation adjustment																	393,000
Change in derivative, net of tax																	3,464,000
Ending balance at Jun. 29, 2021		$ 1,052,000		850,601,000			1,134,186,000		(1,701,303,000)		72,000						284,608,000
Ending balance (in shares) at Jun. 29, 2021		105,196
Increase (Decrease) in Stockholders' Equity
Cumulative effect of adopting ASU 2020-06		$ 995,000		904,045,000			1,114,047,000		(1,700,700,000)		(1,873,000)					$ 213,485,000	316,514,000
Balance (as adjusted) (in shares)		99,508														200
Beginning balance at Mar. 30, 2021		$ 995,000		904,045,000			1,114,047,000		(1,700,700,000)		(1,873,000)					$ 213,485,000	316,514,000
Beginning balance (in shares) at Mar. 30, 2021		99,508														200
Increase (Decrease) in Stockholders' Equity
Net income/(loss)							33,715,000										33,715,000
Foreign currency translation adjustment											219,000						219,000
Change in derivative, net of tax											1,726,000						1,726,000
Cash dividends declared common stock							15,000										15,000
Stock-based compensation		$ 1,000		5,540,000													5,541,000
Stock-based compensation (in shares)		44
Common stock issued under stock-based compensation plans		$ 1,000		4,361,000													4,362,000
Common stock issued under stock-based compensation plans (in shares)		118
Common stock issuance		$ 31,000		167,019,000													167,050,000
Common stock issuance (in shares)		3,125
Treasury stock purchases									(603,000)								(603,000)
Series A preferred stock cash-settled conversion				(283,637,000)												$ (160,114,000)	(283,637,000)
Series A preferred stock cash-settled conversion (in shares)																(150)
Series A preferred stock conversion to common stock		$ 24,000		53,273,000												$ (53,371,000)	53,297,000
Series A preferred stock conversion to common stock (in shares)		2,401														(50)
Deemed dividends on Series A preferred stock							(13,591,000)										(13,591,000)
Preferred stock direct costs.																	0
Ending balance at Jun. 29, 2021		$ 1,052,000		850,601,000			1,134,186,000		(1,701,303,000)		72,000						284,608,000
Ending balance (in shares) at Jun. 29, 2021		105,196
Increase (Decrease) in Stockholders' Equity
Cumulative effect of adopting ASU 2020-06		$ 1,052,000		$ 850,601,000			$ 1,134,186,000		$ (1,701,303,000)		$ 72,000						$ 284,608,000
Balance (as adjusted) (in shares)		105,196