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Stockholders' Equity - Schedule of Treasury Stock Purchases and Issuance (Details) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Shares |  |
Beginning Balance (in shares) | 939,632 |
Purchased (in shares) | 7,000 |
Issued to employees and directors (in shares) | (10,158) |
Ending Balance (in shares) | 936,474 |
Cost |  |
Beginning Balance | $ 31,943 |
Purchased | 238 | $ 25,576
Issued to employees and directors | (397) |
Ending Balance | $ 31,784 |

X
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