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Share Capital, Option Plans and Share-Based Payments (Tables) | 3 Months Ended
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Sep. 30, 2019
Share-based Payment Arrangement [Abstract] |
Summary of Share-based Compensation Costs | Total share-based compensation expense for the periods indicated below is detailed as follows:
| Three Months Ended September 30,
| 2019 |  | 2018
Stock options | $ | 2,010 |  |  | $ | 2,602 |
Performance Share Units (issued under LTIP) | 1,400 |  |  | 843 |
Restricted Share Units (issued under LTIP) | 1,660 |  |  | 1,385 |
Restricted Share Units (other) | 10 |  |  | 81 |
Deferred Share Units (directors) | 751 |  |  | 661 |
Employee Share Purchase Plan | 1,060 |  |  | 983 |
Total share-based compensation expense | $ | 6,891 |  |  | $ | 6,555 |
Summary of Option Activity | A summary of activity under our stock option plans for the three months ended September 30, 2019 is as follows:
| Options |  | Weighted- Average Exercise Price |  | Weighted- Average Remaining Contractual Term (years) |  | Aggregate Intrinsic Value ($’000s)
Outstanding at June 30, 2019 | 7,102,753 |  |  | $ | 31.82 |  |  |  |  |
Granted | 745,710 |  |  | 38.76 |  |  |  |  |
Exercised | (183,680 | ) |  | 24.91 |  |  |  |  |
Forfeited or expired | (76,394 | ) |  | 34.19 |  |  |  |  |
Outstanding at September 30, 2019 | 7,588,389 |  |  | $ | 32.64 |  |  | 4.17 |  | $ | 61,988 |
Exercisable at September 30, 2019 | 2,936,341 |  |  | $ | 28.37 |  |  | 2.78 |  | $ | 36,520 |
Schedule of Weighted-Average Fair Value of Options and Weighted-Average Assumptions Used | For the periods indicated, the weighted-average fair value of options and weighted-average assumptions were as follows:
| Three Months Ended September 30,
| 2019 |  | 2018
Weighted–average fair value of options granted | $ | 6.41 |  |  | $ | 8.73 |
Weighted-average assumptions used: |  |  |
Expected volatility | 22.11 | % |  | 26.07 | %
Risk–free interest rate | 1.68 | % |  | 2.80 | %
Expected dividend yield | 1.68 | % |  | 1.45 | %
Expected life (in years) | 4.11 |  |  | 4.32 |
Forfeiture rate (based on historical rates) | 7 | % |  | 6 | %
Average exercise share price | $ | 38.76 |  |  | $ | 39.27 |

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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=116856206&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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