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Disclosure of Compensation Related Costs, Share Based Payments (Tables) | 6 Months Ended
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Oct. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Compensation Grants | The following table summarizes the most recent compensation grants as of October 31, 2017:
Date of Grant | Type of Grant | Shares Granted | Recipients | Vesting Date | Fair Value at Grant Date
June 6, 2014 | Restricted Stock Units | 91,000 |  | Officers & Key employees | June 6, 2017 | $6,584
June 6, 2014 | Restricted Stock | 30,538 |  | Officers & Key employees | Immediate (Annual performance goal) | $2,209
September 19, 2014 | Restricted Stock | 13,955 |  | Non-employee board members | Immediate | $990
June 5, 2015 | Restricted Stock Units | 104,200 |  | Officers & Key employees | June 5, 2018 | $9,135
June 5, 2015 | Restricted Stock | 48,913 |  | Officers & Key employees | Immediate (Annual performance goal) | $4,288
September 18, 2015 | Restricted Stock | 7,748 |  | Non-employee board members | Immediate | $856
April 12, 2016 | Restricted Stock | 10,000 |  | CEO | 2,000 Shares each May 1st from 2017-2021 | $1,060
June 3, 2016 | Restricted Stock Units | 111,150 |  | Officers & Key employees | June 3, 2019 | $13,849
June 3, 2016 | Restricted Stock | 40,996 |  | Officers & Key employees | Immediate (Annual performance goal) | $5,108
September 16, 2016 | Restricted Stock | 8,941 |  | Non-employee board members | Immediate | $1,064
June 1, 2017 | Restricted Stock Units | 63,699 |  | Key Employees | June 15, 2020 | $7,388
July 14, 2017 | Restricted Stock Units *** | 61,126 |  | Officers | June 15, 2020 | $6,912
September 15, 2017 | Restricted Stock | 8,344 |  | Non-employee board members | Immediate | $920
*** This grant of restricted stock units includes time-based, performance-based and market-based awards. The performance-based awards included in the figure above represent a “target” amount; the final amount earned is based on the satisfaction of certain performance measures over a three-year performance period and will range from 0% to 200% of the “target".
Schedule of Stock Options Activity | Information concerning the issuance of stock options under the Plan and Prior Plans is presented in the following table:
| Number of option shares |  | Weighted average option exercise price
Outstanding at April 30, 2017 | 222,050 |  |  | $ | 38.51 |
Granted | — |  |  | — |
Exercised | 10,225 |  |  | 29.10 |
Forfeited | — |  |  | — |
Outstanding at October 31, 2017 | 211,825 |  |  | $ | 38.96 |
Schedule of Restricted Stock Units Award Activity | Information concerning the unvested restricted stock units under the Plan is presented in the following table:
Unvested at April 30, 2017 | 303,400 |
Granted | 124,825 |
Vested | (87,600 | )
Forfeited | (1,344 | )
Unvested at October 31, 2017 | 339,281 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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