Consolidated Statements of Shareholders' Equity and Comprehensive Income (Loss) Statement - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Shares outstanding, beginning balance at Apr. 03, 2016		10,512,471
Stockholders' equity, beginning balance at Apr. 03, 2016	$ 200,975	$ 526	$ 48,189	$ 152,265	$ (5)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	(8,923)			(8,923)
Share-based compensation expense	2,127		2,127
Tax benefit on share-based compensation plans	131		131
Vesting of restricted stock (shares)		44,113
Vesting of restricted stock	0	$ 2	(2)
Shares surrendered for payroll taxes (shares)		(12,974)
Shares surrendered for payroll taxes	(631)	$ (1)	(630)
ESPP shares issued (shares)		38,986
ESPP shares issued	1,291	$ 2	1,289
Shares repurchased (Shares)		0
Shares repurchased	0
Other comprehensive income, net of tax	303				303
Net income (loss)	22,555			22,555
Shares outstanding, ending balance at Apr. 02, 2017		10,582,596
Stockholders' equity, ending balance at Apr. 02, 2017	217,828	$ 529	51,104	165,897	298
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	(9,400)			(9,400)
Share-based compensation expense	1,371		1,371
Vesting of restricted stock (shares)		8,092
Vesting of restricted stock	0	$ 1	(1)
ESPP shares issued (shares)		41,304
ESPP shares issued	1,405	$ 2	1,403
Shares repurchased (Shares)		0
Shares repurchased	0
Other comprehensive income, net of tax	220			(78)	298
Net income (loss)	(9,177)			(9,177)
Shares outstanding, ending balance at Apr. 01, 2018		10,631,992
Stockholders' equity, ending balance at Apr. 01, 2018	202,247	$ 532	53,877	147,242	596
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	(7,270)			(7,270)
Share-based compensation expense	2,010		2,010
Vesting of restricted stock (shares)		33,051
Vesting of restricted stock	0	$ 2	(2)
Shares surrendered for payroll taxes (shares)		(8,105)
Shares surrendered for payroll taxes	(266)	$ (1)	(265)
ESPP shares issued (shares)		43,678
ESPP shares issued	1,338	$ 2	1,336
Shares repurchased (Shares)		(108,166)
Shares repurchased	(4,352)	$ (5)	(4,347)
Other comprehensive income, net of tax	(279)				(279)
Net income (loss)	24,433			24,433
Shares outstanding, ending balance at Mar. 31, 2019		10,592,450
Stockholders' equity, ending balance at Mar. 31, 2019	$ 217,861	$ 530	$ 52,609	$ 164,405	$ 317