Consolidated Statements of Stockholders' Equity (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total
Balance at Mar. 25, 2012	$ 89,000	$ 53,396,000	$ 25,168,000	$ 497,000	$ (50,313,000)	$ 28,837,000
Balance (in shares) at Mar. 25, 2012	8,855,263				4,491,486
Shares issued in connection with share-based compensation plans (in shares)	102,918
Shares issued in connection with share-based compensation plans	1,000	388,000				389,000
Withholding tax on net share settlement of share-based compensation plans		(982,000)				(982,000)
Repurchase of common stock (in shares)					88,077
Repurchase of common stock					(3,085,000)	(3,085,000)
Income tax benefit on stock option exercises		1,062,000				1,062,000
Share-based compensation		627,000				627,000
Unrealized losses on available-for-sale securities, net of deferred income tax benefit				(168,000)		(168,000)
Net income			7,468,000			7,468,000
Balance at Mar. 31, 2013	90,000	54,491,000	32,636,000	329,000	(53,398,000)	34,148,000
Balance (in shares) at Mar. 31, 2013	8,958,181				4,579,563
Shares issued in connection with share-based compensation plans (in shares)	134,002
Shares issued in connection with share-based compensation plans	1,000	943,000				944,000
Withholding tax on net share settlement of share-based compensation plans		(772,000)				(772,000)
Repurchase of common stock (in shares)					30,463
Repurchase of common stock					(1,486,000)	(1,486,000)
Income tax benefit on stock option exercises		2,195,000				2,195,000
Share-based compensation		721,000				721,000
Unrealized losses on available-for-sale securities, net of deferred income tax benefit				(180,000)		(180,000)
Net income			8,327,000			8,327,000
Balance at Mar. 30, 2014	91,000	57,578,000	40,963,000	149,000	(54,884,000)	43,897,000
Balance (in shares) at Mar. 30, 2014	9,092,183				4,610,026
Shares issued in connection with share-based compensation plans (in shares)	159,914
Shares issued in connection with share-based compensation plans	2,000	880,000				882,000
Withholding tax on net share settlement of share-based compensation plans		(3,693,000)				(3,693,000)
Repurchase of common stock (in shares)					37,661	37,661
Repurchase of common stock					(1,916,000)	(1,916,000)
Income tax benefit on stock option exercises		4,572,000				4,572,000
Share-based compensation		859,000				859,000
Unrealized losses on available-for-sale securities, net of deferred income tax benefit				(102,000)		(102,000)
Net income			11,703,000			11,703,000
Dividends declared			(116,110,000)			(116,110,000)
Balance at Mar. 29, 2015	$ 93,000	$ 60,196,000	$ (63,444,000)	$ 47,000	$ (56,800,000)	$ (59,908,000)
Balance (in shares) at Mar. 29, 2015	9,252,097				4,647,687