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Common Stock and Options - Schedule of Options (Details) - $ / shares | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Number of options |  |  |
Beginning balance (in shares) | 293,000 | 227,500 |
Employee stock options granted (in shares) | 0 | 118,000 | 10,000
Forfeitures/expired (in shares) | (75,000) | (52,500) |
Ending balance (in shares) | 218,000 | 293,000 | 227,500
Weighted average exercise price |  |  |
Beginning balance (in dollars per share) | $ 32.09 | $ 31.46 |
Granted (in dollars per share) |  | 33.96 |
Forfeitures/expired (in dollars per share) | 27.15 | 33.60 |
Ending balance (in dollars per share) | $ 33.78 | $ 32.09 | $ 31.46
Weighted average remaining contractual term(years) |  |  |
Weighted average remaining contractual term | 9 months 14 days | 1 year 9 months 14 days | 1 year 2 months 19 days
Granted |  | 2 years 3 months |
Forfeitures/expired | 0 years | 0 years |

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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. + 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 (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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