Note 4 - Estimated Fair Value of Stock Options Assumptions (Details) - $ / shares |
9 Months Ended | |
|---|---|---|
Dec. 27, 2015 |
Dec. 28, 2014 |
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| Options issued (in shares) | 110,000 | 165,000 |
| Grant date | Jun. 12, 2015 | Jun. 18, 2014 |
| Dividend yield | 3.82% | 4.05% |
| Expected volatility | 20.00% | 30.00% |
| Risk free interest rate | 1.12% | 0.95% |
| Contractual term (years) | 10 years | 10 years |
| Expected term (years) | 3 years | 3 years |
| Forfeiture rate | 5.00% | 5.00% |
| Exercise price (grant-date closing price) per option (in dollars per share) | $ 8.38 | $ 7.90 |
| Fair value per option (in dollars per share) | $ 0.77 | $ 1.19 |
| X | ||||||||||
- Definition The length of the contractual term. No definition available.
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- Definition Forfeiture rate of share-based compensation stock options. No definition available.
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| X | ||||||||||
- Definition Date in which share-based compensation stock options is granted. No definition available.
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- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. No definition available.
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| X | ||||||||||
- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Gross number of share options (or share units) granted during the period. No definition available.
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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