Consolidated Statements of Stockholders' (Deficit) Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Mar. 31, 2013	8,958,181				4,579,563
Balance at Mar. 31, 2013	$ 90,000	$ 54,491,000	$ 32,636,000	$ 329,000	$ (53,398,000)	$ 34,148,000
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 (in shares) at Mar. 30, 2014	9,092,183				4,610,026
Balance at Mar. 30, 2014	$ 91,000	57,578,000	40,963,000	149,000	$ (54,884,000)	$ 43,897,000
Reclassification adjustment for gains included in net income, net of deferred income tax benefit
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
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
Balance (in shares) at Mar. 29, 2015	9,252,097				4,647,687
Balance at Mar. 29, 2015	$ 93,000	60,196,000	(63,444,000)	47,000	$ (56,800,000)	(59,908,000)
Dividends declared			$ (116,110,000)			$ (116,110,000)
Reclassification adjustment for gains included in net income, net of deferred income tax benefit
Shares issued in connection with share-based compensation plans (in shares)	21,969
Shares issued in connection with share-based compensation plans		89,000				$ 89,000
Withholding tax on net share settlement of share-based compensation plans		(285,000)				$ (285,000)
Repurchase of common stock (in shares)					449,070	449,070
Repurchase of common stock					$ (19,231,000)	$ (19,231,000)
Income tax benefit on stock option exercises		228,000				228,000
Share-based compensation		722,000				$ 722,000
Unrealized losses on available-for-sale securities, net of deferred income tax benefit
Net income			$ 6,096,000			$ 6,096,000
Balance (in shares) at Mar. 27, 2016	9,274,066				5,096,757
Balance at Mar. 27, 2016	$ 93,000	$ 60,950,000	$ (57,348,000)		$ (76,031,000)	(72,336,000)
Reclassification adjustment for gains included in net income, net of deferred income tax benefit				$ (47,000)		$ (47,000)