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Note L - Stockholders' Equity, Stock Plans and Other Employee Benefit Plans (Details Textual)												12 Months Ended
	Jun. 08, 2023 $ / shares	Mar. 03, 2023 $ / shares	Dec. 02, 2022 $ / shares	Sep. 02, 2022 $ / shares	Jun. 24, 2022 $ / shares	Jun. 01, 2022 USD ($)	Mar. 04, 2022 $ / shares	Dec. 03, 2021 $ / shares	Sep. 03, 2021 $ / shares	Jun. 25, 2021 $ / shares	Nov. 01, 2012 USD ($) shares	Mar. 26, 2023 USD ($) $ / shares shares	Mar. 27, 2022 USD ($) $ / shares shares	Mar. 29, 2020	Dec. 31, 2017	Dec. 31, 2021 USD ($)	Sep. 18, 2019 shares	Mar. 11, 2016 shares
Common Stock, Dividends, Per Share, Declared \| $ / shares		$ 0.50	$ 0.45	$ 0.45	$ 0.45		$ 0.45	$ 0.35	$ 0.35	$ 0.35		$ 1.85	$ 1.50
Payments of Ordinary Dividends, Common Stock \| $												$ 7,563,000	$ 6,173,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period												50,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value \| $ / shares												$ 67.59
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross												0	10,000
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price \| $ / shares												$ 0	$ 68.50
Share-Based Payment Arrangement, Expense, Tax Benefit \| $												$ 0	$ 5,000
Share Based Compensation Total Unamortized Compensation Expense \| $												$ 3,232,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition												52 months
Treasury Stock, Value, Acquired, Cost Method \| $												$ 1,892,000
Number of Times of Salary and Bonus Lump Sum Cash Payment														2.99
Defined Contribution Plan, Employer Discretionary Contribution Amount \| $												$ 35,000	35,000
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent														20.00%
Defined Contribution Plan, Employer Matching Contribution Rate Per Dollar \| $ / shares												$ 0.25
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay												3.00%
Multiemployer Plans, Withdrawal Obligation \| $																$ 402,000
Multiemployer Plan, Employer Contribution, Cost \| $												$ 9,000	6,000
Executive Chairman of the Board [Member]
Term of Consulting Period Pursuant to the Lorber Employment [Agreement]															3 years
Executive Chairman of the Board [Member] \| Consulting Fee [Member]
Contractual Obligation \| $											$ 200,000
Chief Executive Officer [Member] \| Base Salary [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount \| $						$ 625,000
Repurchase Program [Member]
Treasury Stock, Shares, Acquired												35,434
Shares Acquired, Average Cost Per Share \| $ / shares												$ 53.39
Treasury Stock, Value, Acquired, Cost Method \| $													$ 1,892
Sixth Stock Repurchase Plan [Member]
Treasury Stock, Shares, Acquired												1,101,884
Treasury Stock, Value, Acquired, Cost Method \| $												$ 39,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased																		1,200,000
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased												98,116
Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period													5 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period													4 years
Share-Based Payment Arrangement, Option [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period												5 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period												3 years
Share-Based Payment Arrangement, Option [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period												10 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period												5 years
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 Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period												5 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period												5 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period												50,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value \| $ / shares												$ 67.59
Restricted Stock Units (RSUs) [Member] \| Share-Based Payment Arrangement, Tranche One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period												10,000
Restricted Stock Units (RSUs) [Member] \| Share-Based Payment Arrangement, Tranche Two [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period												10,000
Restricted Stock Units (RSUs) [Member] \| Share-Based Payment Arrangement, Tranche Three [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period												10,000
Restricted Stock Units (RSUs) [Member] \| Share-Based Payment Arrangement, Tranche Four [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period												10,000
Restricted Stock Units (RSUs) [Member] \| Share-Based Payment Arrangement, Tranche Five [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period												10,000
The 2019 Stock Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized																	369,584
The 2019 Stock Incentive Plan [Member] \| Shares Expired or Forfeited up to 100000 Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant																	11,000
The 2019 Stock Incentive Plan [Member] \| Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant												131,683
The 2019 Stock Incentive Plan [Member] \| Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant												148,584
The 2010 Stock Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant																	208,584
Forecast [Member]
Common Stock, Dividends, Per Share, Declared \| $ / shares	$ 0.50