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Commitments and Contingencies (Details) - USD ($) $ in Thousands |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 11, 2019 | Mar. 31, 2019 | Jun. 30, 2019 | Sep. 30, 2018
Loss Contingencies [Line Items] |  |  |  |
Outstanding purchase commitments |  |  | $ 2,421 |
Alico Settlement Agreement |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Gain contingency, annual consulting fee, term (up to) | 24 months |  |  |
Gain contingency, annual consulting fee | $ 400 |  |  |
Amount of expense recorded |  | $ 800 |  |
Financial Standby Letter of Credit |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Outstanding standby letters of credit |  |  | $ 460 | $ 10,300
Letters of credit terminated |  | $ 9,800 |  |

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