CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - 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 principles	1,177			1,177
Net income	(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	15,907
Balance (in shares) at Sep. 29, 2018		51,625
Balance at Sep. 29, 2018	701,339	$ 516	530,480	194,376	(24,033)
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	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)
Balance (in shares) at Mar. 30, 2019		51,020
Balance at Mar. 30, 2019	667,868	$ 510	536,320	161,418	(30,380)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Employee stock purchase plan (in shares)		25
Employee stock purchase plan	1,830	$ 0	1,830
Exercise of stock options (in shares)		85
Exercise of stock options	3,635	$ 1	3,634
Shares repurchased (in shares)		(616)
Shares repurchased	(75,000)	$ (6)	(21,473)	(53,521)
Issuance of restricted stock, net of cancellations (in shares)		257
Issuance of restricted stock, net of cancellations	0	$ 3	(3)
Share-based compensation expense	4,730		4,730
Net income	(8,479)			(8,479)
Other comprehensive income (loss)	(3,618)				(3,618)
Balance (in shares) at Jun. 29, 2019		50,771
Balance at Jun. 29, 2019	590,966	$ 508	525,038	99,418	(33,998)
Balance (in shares) at Mar. 30, 2019		51,020
Balance at Mar. 30, 2019	667,868	$ 510	536,320	161,418	(30,380)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	29,007
Other comprehensive income (loss)	(5,726)
Balance (in shares) at Sep. 28, 2019		50,608
Balance at Sep. 28, 2019	583,754	$ 506	533,720	85,634	(36,106)
Balance (in shares) at Jun. 29, 2019		50,771
Balance at Jun. 29, 2019	590,966	$ 508	525,038	99,418	(33,998)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)		64
Exercise of stock options	2,410	$ 1	2,409
Shares repurchased (in shares)		(360)
Shares repurchased	(50,000)	$ (4)	1,274	(51,270)
Issuance of restricted stock, net of cancellations (in shares)		133
Issuance of restricted stock, net of cancellations	0	$ 1
Share-based compensation expense	5,000		5,000
Net income	37,486			37,486
Other comprehensive income (loss)	(2,108)				(2,108)
Balance (in shares) at Sep. 28, 2019		50,608
Balance at Sep. 28, 2019	$ 583,754	$ 506	$ 533,720	$ 85,634	$ (36,106)