CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY Statement - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)
Balance (in shares) at Mar. 31, 2018		52,343
Balance at Mar. 31, 2018	$ 752,429	$ 523	$ 503,955	$ 266,942	$ (18,991)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee stock purchase plan (in shares)		45
Employee stock purchase plan	1,780	$ 1	1,779
Exercise of stock options (in shares)		75
Exercise of stock options	2,831	$ 1	2,830
Shares repurchased (in shares)		(888)
Shares repurchased	(80,000)	$ (9)	(4,552)	(75,439)
Issuance of restricted stock, net of cancellations (in shares)		67
Issuance of restricted stock, net of cancellations	0
Share-based compensation expense	3,379		3,379
Cumulative effect of change in accounting standards	1,177			1,177
Net income (loss)	(2,819)			(2,819)
Other comprehensive income (loss)	(4,719)				(4,719)
Balance (in shares) at Jun. 30, 2018		51,642
Balance at Jun. 30, 2018	674,058	$ 516	507,391	189,861	(23,710)
Balance (in shares) at Mar. 31, 2018		52,343
Balance at Mar. 31, 2018	752,429	$ 523	503,955	266,942	(18,991)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	34,184
Other comprehensive income (loss)	(10,105)
Balance (in shares) at Dec. 29, 2018		50,993
Balance at Dec. 29, 2018	643,129	$ 510	531,131	140,584	(29,096)
Balance (in shares) at Jun. 30, 2018		51,642
Balance at Jun. 30, 2018	674,058	$ 516	507,391	189,861	(23,710)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		125
Exercise of stock options	4,295	$ 1	4,294
Shares repurchased (in shares)		(182)
Shares repurchased	0	$ (2)	14,213	(14,211)
Issuance of restricted stock, net of cancellations (in shares)		40
Issuance of restricted stock, net of cancellations	1	$ 1
Share-based compensation expense	4,582		4,582
Net income (loss)	18,726			18,726
Other comprehensive income (loss)	(323)				(323)
Balance (in shares) at Sep. 29, 2018		51,625
Balance at Sep. 29, 2018	701,339	$ 516	530,480	194,376	(24,033)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee stock purchase plan (in shares)		22
Employee stock purchase plan	1,474		1,474
Exercise of stock options (in shares)		66
Exercise of stock options	2,321	$ 1	2,320
Shares repurchased (in shares)		(771)
Shares repurchased	(80,000)	$ (7)	(7,924)	(72,069)
Issuance of restricted stock, net of cancellations (in shares)		51
Issuance of restricted stock, net of cancellations	(1)		(1)
Share-based compensation expense	4,782		4,782
Net income (loss)	18,277			18,277
Other comprehensive income (loss)	(5,063)				(5,063)
Balance (in shares) at Dec. 29, 2018		50,993
Balance at Dec. 29, 2018	$ 643,129	$ 510	$ 531,131	$ 140,584	$ (29,096)