| Leases - Schedule of Right of Use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Sep. 30, 2020 | 
|---|---|---|
| Leases [Abstract] | ||
| Right of use asset - operating leases | $ 28,971 | $ 30,894 | 
| Current | 6,958 | 7,176 | 
| Long term | $ 26,503 | $ 28,101 | 
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- References No definition available. 
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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