Note L - Stockholders' Equity, Stock Plans and Other Employee Benefit Plans (Details Textual)							12 Months Ended						77 Months Ended	172 Months Ended
	Jun. 01, 2016 USD ($)	Jun. 10, 2015 USD ($) $ / shares shares	Mar. 27, 2015 USD ($) $ / shares	Mar. 10, 2015 $ / shares	Jun. 04, 2013 USD ($) $ / shares shares	Nov. 01, 2012 USD ($) shares	Mar. 31, 2019 USD ($)	Mar. 25, 2018 USD ($)	Mar. 26, 2017 USD ($)	Mar. 27, 2016 USD ($) $ / shares shares	Mar. 29, 2015 USD ($) $ / shares shares	Mar. 30, 2014 USD ($) $ / shares shares	Mar. 27, 2016 USD ($) $ / shares shares	Mar. 27, 2016 USD ($) $ / shares shares	Mar. 11, 2016 $ / shares shares	Feb. 01, 2016 shares	Nov. 13, 2015 $ / shares	Sep. 11, 2015 $ / shares shares	Dec. 13, 2013 USD ($) $ / shares shares	Jun. 05, 2013 $ / shares shares	Sep. 13, 2012 shares	Feb. 01, 2011 shares	Sep. 14, 2010 shares	Jul. 14, 2010 shares	Nov. 09, 2009 shares	May. 31, 2007 USD ($)
Special Cash Dividend [Member] | Scenario, Forecast [Member]
Payments of Ordinary Dividends, Common Stock | $							$ 125,000	$ 125,000	$ 375,000
Special Cash Dividend [Member]
Common Stock, Dividends, Per Share, Declared | $ / shares			$ 25	$ 25
Payments of Ordinary Dividends, Common Stock | $			$ 115,100,000							$ 375,000
Dividends Payable | $										$ 1,000,000			$ 1,000,000	$ 1,000,000
Scenario, Forecast [Member] | Base Salary [Member] | Chief Executive Officer [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount | $	$ 500,000
Excluding Dividend [Member]
Share Price | $ / shares			$ 48.56
Newly Authorized Additional Shares Pursuant to 2010 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant																							150,000
Shares Not Issued Under 2001 Plan and 2002 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant																								171,000
Shares Expired or Forfeited up to 100000 Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant																							100,000
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant										223,698			223,698	223,698
Restricted Stock [Member] | Executive Chairman of the Board [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period						50,000
Restricted Stock [Member] | Chief Executive Officer [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition					5 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period					25,000
Share Price | $ / shares					$ 49.80
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | $					$ 1,245,000
Restricted Stock [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition												5 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant										190,218			190,218	190,218
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period												25,000
Share Price | $ / shares												$ 49.80
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized | $												$ 1,245,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $										$ 683,000	$ 965,000	$ 533,000
The 2010 Plan [Member]
Share Based Compensation Arrangement by Share Based Payment Award Option Life										5 years
Options Granted before the 2010 Plan [Member]
Share Based Compensation Arrangement by Share Based Payment Award Option Life										10 years
Stock Incentive Plans [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period										3 years
Stock Incentive Plans [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period										5 years
Common Stock Purchase Rights [Member]
Common Stock, Capital Shares Reserved for Future Issuance										10,825,689			10,825,689	10,825,689
Minimum [Member] | Dutch Auction Tender Offer [Member]
Share Price | $ / shares																	$ 41	$ 33
Maximum [Member] | Dutch Auction Tender Offer [Member]
Share Price | $ / shares																	$ 44	$ 36
Dutch Auction Tender Offer [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased																		500,000
Treasury Stock, Shares, Acquired										88,672
Treasury Stock, Value, Acquired, Cost Method | $										$ 4,056,000
Sixth Stock Repurchase Plan [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased										1,200,000			1,200,000	1,200,000											500,000
Treasury Stock, Shares, Acquired													909,126
Treasury Stock, Value, Acquired, Cost Method | $													$ 28,369,000
Stock Repurchase Program Number of Additional Shares Authorized to be Repurchased															200,000	200,000						300,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased										290,874			290,874	290,874
MSI Agreement [Member]
Common Stock, Par or Stated Value Per Share | $ / shares															$ 0.01
Stock Repurchase Program, Number of Shares Authorized to be Repurchased															175,000
Base Salary [Member] | Executive Chairman of the Board [Member]
Contractual Obligation | $						$ 600,000
Base Salary [Member] | One Employee [Member]
Contractual Obligation | $																										$ 136,000
Consulting Fee [Member] | Executive Chairman of the Board [Member]
Contractual Obligation | $						$ 200,000
Executive Chairman of the Board [Member]
Term of Consulting Period Pursuant to the Lorber Employment [Agreement]						3 years
President and Chief Operating Officer [Member]
Share Price | $ / shares		$ 40.28
Common Stock, Par or Stated Value Per Share | $ / shares		$ 0.01
Consulting Agreement Term		1 year
Consulting Fee Per Month | $		$ 16,300
Transition Agreement, Severance Payable | $		$ 289,000
Transition Agreement, Number of Shares of Common Stock Purchased		56,933
Common Stock, Dividends, Per Share, Declared | $ / shares										$ 0	$ 25	$ 0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition										2 years 30 days
Payments of Ordinary Dividends, Common Stock | $										$ 375,000	$ 115,110,000
Increased Number of Shares Available for Issuance Due to Plan Amendment																					250,000
Amount of Available Common Shares Reduced by Each Share of Restricted Stock Granted																					3.2
Share Based Compensation Arrangement by Share Based Payment Award Option Life											5 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period											4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross											50,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ / shares											$ 53.89
Share Price | $ / shares			$ 73.56
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense | $										$ 298,000	$ 350,000	$ 286,000
Share Based Compensation Total Unamortized Compensation Expense | $										$ 1,081,000			$ 1,081,000	$ 1,081,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period										15,147	235,125	150,000
Proceeds from Stock Options Exercised | $										$ 89,000	$ 880,000	$ 944,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | $										$ 486,000	$ 13,040,000	6,038,000
Minimum Percentage of Common Stock Acquired by a Person or Group which Triggers Exercise of New Rights																				15.00%
New Right Purchase Price | $ / shares																				$ 100
Common Stock, Capital Shares Reserved for Future Issuance																				10,188,600
Common Stock, Par or Stated Value Per Share | $ / shares										$ 0.01	$ 0.01		$ 0.01	$ 0.01					$ 0.01
Stock Repurchase Program, Authorized Amount | $																			$ 5,000,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased																			800,000
Treasury Stock, Shares, Acquired										449,070				5,096,757
Treasury Stock, Value, Acquired, Cost Method | $										$ 19,231,000	$ 1,916,000	1,486,000		$ 76,031,000
Number of Times of Salary and Bonus Lump Sum Cash Payment										2.99			2.99	2.99
Defined Contribution Plan, Employer Discretionary Contribution Amount | $										$ 35,000	30,000	34,000
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent										20.00%
Defined Contribution Plan, Employer Matching Contribution Rate Per Dollar										0.25
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay										3.00%
Multiemployer Plans, Plan Contributions | $										$ 8,000	$ 10,000	$ 10,000