Note L - Stockholders' Equity (Details Textual) - USD ($)			3 Months Ended		9 Months Ended	177 Months Ended
	Mar. 27, 2015	Mar. 10, 2015	Jun. 26, 2016	Jun. 28, 2015	Mar. 26, 2017	Jun. 26, 2016	Mar. 27, 2016	Mar. 11, 2016	Jun. 05, 2013
Special Cash Dividend [Member] | Scenario, Forecast [Member]
Payments of Ordinary Dividends, Common Stock					$ 250,000
Special Cash Dividend [Member]
Common Stock, Dividends, Per Share, Declared	$ 25	$ 25
Payments of Ordinary Dividends, Common Stock	$ 115,100,000		$ 500,000
Dividends Payable	$ 1,000,000
MSI Agreement [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased								175,000
Common Stock, Par or Stated Value Per Share								$ 0.01
Payments of Ordinary Dividends, Common Stock			$ 125,000	$ 125,000
Minimum Percentage of Common Stock Acquired by a Person or Group which Triggers Exercise of New Rights									15.00%
New Right Purchase Price									$ 100
Common Stock, Capital Shares Reserved for Future Issuance			10,595,655			10,595,655			10,188,600
Treasury Stock, Shares, Acquired			30,616			5,127,373
Treasury Stock, Value, Acquired, Cost Method			$ 1,272,000			$ 77,303,000
Common Stock, Par or Stated Value Per Share			$ 0.01			$ 0.01	$ 0.01
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased			260,258			260,258