Income Taxes - Schedule of Uncertain Tax Positions (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2017 |
|
| Income Tax Disclosure [Abstract] | |||
| Beginning Balance | $ 165 | $ 865 | $ 240 |
| Additions for tax positions of prior years | 625 | ||
| Decrease related to settlements with taxing authorities | (700) | ||
| Reduction due to lapse from closed examination | (165) | ||
| Ending Balance | $ 165 | $ 865 | |