Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Dec. 30, 2017	$ 4	$ 102,862	$ 851,307	$ (1,157)	$ 953,016
Balance (in shares) at Dec. 30, 2017	42,707
Increase (Decrease) in Stockholders' Equity
Cumulative effect of adoption of accounting standard			26,448	(250)	26,198
Net income (loss)			40,685		40,685
Other comprehensive income (loss)				(553)	(553)
Stock issuances, net of shares withheld for taxes		(11,823)			(11,823)
Stock issuances, net of shares withheld for taxes (in shares)	679
Repurchases of common stock		(3,397)			(3,397)
Repurchases of common stock (in shares)	(36)
Stock-based compensation		24,342			24,342
Balance at Jun. 30, 2018	$ 4	111,984	918,440	(1,960)	1,028,468
Balance (in shares) at Jun. 30, 2018	43,350
Balance at Mar. 31, 2018	$ 4	98,396	904,160	(1,985)	1,000,575
Balance (in shares) at Mar. 31, 2018	43,227
Increase (Decrease) in Stockholders' Equity
Net income (loss)			14,280		14,280
Other comprehensive income (loss)				25	25
Stock issuances, net of shares withheld for taxes		4,836			4,836
Stock issuances, net of shares withheld for taxes (in shares)	159
Repurchases of common stock		(3,397)			(3,397)
Repurchases of common stock (in shares)	(36)
Stock-based compensation		12,149			12,149
Balance at Jun. 30, 2018	$ 4	111,984	918,440	(1,960)	1,028,468
Balance (in shares) at Jun. 30, 2018	43,350
Balance at Dec. 29, 2018	$ 4	107,517	961,343	(1,574)	$ 1,067,290
Balance (in shares) at Dec. 29, 2018	43,088				43,088
Increase (Decrease) in Stockholders' Equity
Net income (loss)			(10,631)		$ (10,631)
Other comprehensive income (loss)				2,464	2,464
Stock issuances, net of shares withheld for taxes		(7,400)			(7,400)
Stock issuances, net of shares withheld for taxes (in shares)	557
Repurchases of common stock		(26,716)			(26,716)
Repurchases of common stock (in shares)	(301)
Stock-based compensation		26,264			26,264
Balance at Jun. 29, 2019	$ 4	99,665	950,712	890	$ 1,051,271
Balance (in shares) at Jun. 29, 2019	43,344				43,344
Balance at Mar. 30, 2019	$ 4	90,988	966,741	(251)	$ 1,057,482
Balance (in shares) at Mar. 30, 2019	43,341
Increase (Decrease) in Stockholders' Equity
Net income (loss)			(16,029)		(16,029)
Other comprehensive income (loss)				1,141	1,141
Stock issuances, net of shares withheld for taxes		6,713			6,713
Stock issuances, net of shares withheld for taxes (in shares)	127
Repurchases of common stock		(11,712)			(11,712)
Repurchases of common stock (in shares)	(124)
Stock-based compensation		13,676			13,676
Balance at Jun. 29, 2019	$ 4	$ 99,665	$ 950,712	$ 890	$ 1,051,271
Balance (in shares) at Jun. 29, 2019	43,344				43,344