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v3.22.1

Stockholders' Equity (Changes in Non-vested Stock Options) (Details) - Stock Options [Member] - $ / shares shares in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Number of Options, beginning balance | 1,844 | 2,063
Options granted, Number of options | 4 | 441
Options vested, Number of options | (65) | (713)
Options forfeited, Number of options | (16) | (24)
Number of Options, ending balance | 1,767 | 1,767
Weighted-Average Grant Date Fair Value Per Share, beginning balance | $ 29.39 | $ 25.77
Options granted, Weighted-Average Grant Date Fair Value Per Share | 40.62 | 42.18
Options vested, Weighted-Average Grant Date Fair Value Per Share | 23.19 | 26.23
Options forfeited, Weighted-Average Grant Date Fair Value Per Share | 29.79 | 29.20
Weighted-Average Grant Date Fair Value Per Share, ending balance | $ 29.64 | $ 29.64

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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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. + 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)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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