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 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. 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
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
Reclassification adjustment for gains included in net income, net of deferred income tax benefit of $25
Unrealized losses on available-for-sale securities, net of deferred income tax benefit				(102,000)		(102,000)
Dividends declared			(116,110,000)			(116,110,000)
Net income			11,703,000			11,703,000
Balance (in shares) at Mar. 29, 2015	9,252,097				4,647,687
Balance at Mar. 27, 2016	$ 93,000	60,950,000	(57,348,000)	0	$ (76,031,000)	(72,336,000)
Balance at Mar. 29, 2015	$ 93,000	60,196,000	(63,444,000)	47,000	$ (56,800,000)	(59,908,000)
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
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
Reclassification adjustment for gains included in net income, net of deferred income tax benefit of $25				(47,000)		(47,000)
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. 26, 2017	$ 93,000	60,582,000	(49,863,000)		$ (77,303,000)	(66,491,000)
Balance at Mar. 27, 2016	$ 93,000	60,950,000	(57,348,000)	0	(76,031,000)	(72,336,000)
Shares issued in connection with share-based compensation plans (in shares)	29,804
Shares issued in connection with share-based compensation plans		44,000				44,000
Withholding tax on net share settlement of share-based compensation plans		(994,000)				$ (994,000)
Repurchase of common stock (in shares)					30,616	30,616
Repurchase of common stock					$ (1,272,000)	$ (1,272,000)
Share-based compensation		582,000				582,000
Reclassification adjustment for gains included in net income, net of deferred income tax benefit of $25
Unrealized losses on available-for-sale securities, net of deferred income tax benefit
Net income			$ 7,485,000			$ 7,485,000
Balance (in shares) at Mar. 26, 2017	9,303,870				5,127,373