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Share Capital, Option Plans and Share-Based Payments (Tables) | 9 Months Ended
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Mar. 31, 2020
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 March 31, |  | Nine Months Ended March 31,
| 2020 |  | 2019 |  | 2020 |  | 2019
Stock options | $ | 2,143 |  |  | $ | 2,616 |  |  | $ | 6,820 |  |  | $ | 7,537 |
Performance Share Units (issued under LTIP) | 1,515 |  |  | 879 |  |  | 4,436 |  |  | 2,573 |
Restricted Share Units (issued under LTIP) | 1,478 |  |  | 1,687 |  |  | 4,447 |  |  | 4,698 |
Restricted Share Units (other) | 64 |  |  | 36 |  |  | 84 |  |  | 169 |
Deferred Share Units (directors) | 735 |  |  | 709 |  |  | 2,610 |  |  | 2,402 |
Employee Share Purchase Plan | 921 |  |  | 785 |  |  | 3,133 |  |  | 2,773 |
Total share-based compensation expense | $ | 6,856 |  |  | $ | 6,712 |  |  | $ | 21,530 |  |  | $ | 20,152 |
Summary of Option Activity | A summary of activity under our stock option plans for the nine months ended March 31, 2020 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 | 2,301,230 |  |  | 42.57 |  |  |  |  |
Exercised | (1,300,742 | ) |  | 26.73 |  |  |  |  |
Forfeited or expired | (743,751 | ) |  | 32.96 |  |  |  |  |
Outstanding at March 31, 2020 | 7,359,490 |  |  | $ | 35.96 |  |  | 4.85 |  | $ | 15,496 |
Exercisable at March 31, 2020 | 2,137,643 |  |  | $ | 29.72 |  |  | 2.92 |  | $ | 11,953 |
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 March 31, |  | Nine Months Ended March 31,
| 2020 |  | 2019 |  | 2020 |  | 2019
Weighted–average fair value of options granted | $ | 7.28 |  |  | $ | 7.64 |  |  | $ | 6.95 |  |  | $ | 8.28 |
Weighted-average assumptions used: |  |  |  |  |  |  |
Expected volatility | 21.80 | % |  | 25.60 | % |  | 21.92 | % |  | 25.92 | %
Risk–free interest rate | 1.38 | % |  | 2.51 | % |  | 1.49 | % |  | 2.73 | %
Expected dividend yield | 1.55 | % |  | 1.63 | % |  | 1.60 | % |  | 1.53 | %
Expected life (in years) | 4.14 |  |  | 4.11 |  |  | 4.13 |  |  | 4.26 |
Forfeiture rate (based on historical rates) | 7 | % |  | 6 | % |  | 7 | % |  | 6 | %
Average exercise share price | $ | 44.99 |  |  | $ | 37.24 |  |  | $ | 42.57 |  |  | $ | 38.16 |

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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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