Consolidated Condensed Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2018	$ 1,227,087	$ 104	$ 797,895	$ 433,008	$ (3,920)
Beginning balance (in shares) at Dec. 31, 2018		103,687
Net income (loss)	(3,252)			(3,252)
Other comprehensive income (loss)	(901)				(901)
Redemption of convertible notes, net	(1)		(1)
Issuance of common stock for performance-based restricted stock units (in shares)		694
Issuance of common stock for restricted stock units		$ 1	(1)
Issuance of common stock for restricted stock units (in shares)		1,040
Stock-based compensation	3,926		3,926
Ending balance at Apr. 01, 2019	1,226,859	$ 105	801,819	429,756	(4,821)
Ending balance (in shares) at Apr. 01, 2019		105,421
Beginning balance at Dec. 31, 2018	1,227,087	$ 104	797,895	433,008	(3,920)
Beginning balance (in shares) at Dec. 31, 2018		103,687
Net income (loss)	16,042
Other comprehensive income (loss)	(7,965)
Ending balance at Sep. 30, 2019	1,247,353	$ 105	810,083	449,050	(11,885)
Ending balance (in shares) at Sep. 30, 2019		105,493
Beginning balance at Apr. 01, 2019	1,226,859	$ 105	801,819	429,756	(4,821)
Beginning balance (in shares) at Apr. 01, 2019		105,421
Net income (loss)	3,424			3,424
Other comprehensive income (loss)	(4,808)				(4,808)
Issuance of common stock for restricted stock units (in shares)		70
Stock-based compensation	3,602		3,602
Ending balance at Jul. 01, 2019	1,229,077	$ 105	805,421	433,180	(9,629)
Ending balance (in shares) at Jul. 01, 2019		105,491
Net income (loss)	15,870			15,870
Other comprehensive income (loss)	(2,256)				(2,256)
Issuance of common stock for restricted stock units (in shares)		2
Stock-based compensation	4,662		4,662
Ending balance at Sep. 30, 2019	1,247,353	$ 105	810,083	449,050	(11,885)
Ending balance (in shares) at Sep. 30, 2019		105,493
Beginning balance at Dec. 30, 2019	1,279,037	$ 106	814,708	474,309	(10,086)
Beginning balance (in shares) at Dec. 30, 2019		105,510
Net income (loss)	(1,174)			(1,174)
Other comprehensive income (loss)	(5,498)				(5,498)
Issuance of common stock for performance-based restricted stock units (in shares)		187
Issuance of common stock for restricted stock units (in shares)		520
Stock-based compensation	4,835		4,835
Ending balance at Mar. 30, 2020	1,277,200	$ 106	819,543	473,135	(15,584)
Ending balance (in shares) at Mar. 30, 2020		106,217
Beginning balance at Dec. 30, 2019	1,279,037	$ 106	814,708	474,309	(10,086)
Beginning balance (in shares) at Dec. 30, 2019		105,510
Net income (loss)	138,575
Other comprehensive income (loss)	(30,461)				(30,461)
Ending balance at Sep. 28, 2020	1,399,303	$ 107	826,859	612,884	(40,547)
Ending balance (in shares) at Sep. 28, 2020		106,742
Beginning balance at Mar. 30, 2020	1,277,200	$ 106	819,543	473,135	(15,584)
Beginning balance (in shares) at Mar. 30, 2020		106,217
Net income (loss)	181,200			181,200
Other comprehensive income (loss)	(27,092)				(27,092)
Issuance of common stock for restricted stock units		$ 1	(1)
Issuance of common stock for restricted stock units (in shares)		484
Stock-based compensation	2,647		2,647
Ending balance at Jun. 29, 2020	1,433,955	$ 107	822,189	654,335	(42,676)
Ending balance (in shares) at Jun. 29, 2020		106,701
Net income (loss)	(41,451)			(41,451)
Other comprehensive income (loss)	2,129				2,129
Exercise of stock options	191		191
Exercise of stock options (in shares)		20
Issuance of common stock for restricted stock units (in shares)		21
Stock-based compensation	4,479		4,479
Ending balance at Sep. 28, 2020	$ 1,399,303	$ 107	$ 826,859	$ 612,884	$ (40,547)
Ending balance (in shares) at Sep. 28, 2020		106,742