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Treasury Stock - Schedule of Treasury Stock Purchases (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019
Stockholders Equity Note [Abstract] |  |
Total Number of Shares Purchased | 7,000 | 752,234
Average Price Paid Per Share (in dollars per share) | $ 33.95 | $ 34.00
Total Shares Purchased as Part of Publicly Announced Plan or Program | 1,481,640 | 1,474,640
Total Dollar Value of Shares Purchased | $ 238 | $ 25,576

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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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