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 Mar. 30, 2014		10,562,400
Stockholders' equity, beginning balance at Mar. 30, 2014	$ 182,413	$ 528	$ 50,502	$ 131,427	$ (44)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	(8,074)			(8,074)
Share-based compensation expense	1,631		1,631
Tax benefit on share-based compensation plans	92		92
Vesting of restricted stock (shares)		29,355
Vesting of restricted stock	0	$ 1	(1)
Shares surrendered for payroll taxes (shares)		(7,920)
Shares surrendered for payroll taxes	(295)		(295)
Stock options exercised (shares)		9,333
Stock options exercised	186		186
ESPP shares issued (shares)		31,383
ESPP shares issued	988	$ 2	986
Shares repurchased (Shares)		(59,602)
Shares repurchased	(2,203)	$ (3)	(2,200)
Other comprehensive income, net of tax	12				12
Net income	19,214			19,214
Shares outstanding, ending balance at Mar. 29, 2015		10,564,949
Stockholders' equity, ending balance at Mar. 29, 2015	193,964	$ 528	50,901	142,567	(32)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared	(8,445)			(8,445)
Share-based compensation expense	1,706		1,706
Tax benefit on share-based compensation plans	(1)		(1)
Vesting of restricted stock (shares)		60,658
Vesting of restricted stock	0	$ 3	(3)
Shares surrendered for payroll taxes (shares)		(18,834)
Shares surrendered for payroll taxes	(699)	$ (1)	(698)
ESPP shares issued (shares)		33,550
ESPP shares issued	1,081	$ 2	1,079
Shares repurchased (Shares)		(127,852)
Shares repurchased	(4,801)	$ (6)	(4,795)
Other comprehensive income, net of tax	27				27
Net income	18,143			18,143
Shares outstanding, ending balance at Apr. 03, 2016		10,512,471
Stockholders' equity, ending 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	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