Note 8 - Shareholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions |
3 Months Ended | 9 Months Ended | 143 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|
Dec. 21, 2016 |
Nov. 26, 2016 |
Aug. 27, 2016 |
May 28, 2016 |
Nov. 28, 2015 |
Nov. 26, 2016 |
Nov. 28, 2015 |
Nov. 26, 2016 |
Sep. 30, 2015 |
|
| Stock Repurchase Program, Authorized Amount | $ 11,950,000 | ||||||||
| Treasury Stock, Shares, Acquired | 8.3 | 189.2 | |||||||
| Payments for Repurchase of Common Stock | $ 375,541 | $ 773,518 | $ 10,000,000 | ||||||
| Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 1,900,000 | $ 1,900,000 | $ 1,900,000 | ||||||
| Common Stock, Dividends, Per Share, Declared | $ 0.125 | $ 0.125 | $ 0.125 | $ 0.375 | |||||
| Subsequent Event [Member] | |||||||||
| Common Stock, Dividends, Per Share, Declared | $ 0.125 | ||||||||