Note 15 - Leases - Operating Lease Expense (Details) - USD ($) $ in Thousands  | 
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2023  | 
Jun. 30, 2022  | 
Jun. 30, 2023  | 
Jun. 30, 2022  | 
|
| Total lease expense | $ 1,092 | $ 851 | $ 3,173 | $ 1,687 | 
| Cost of Sales [Member] | ||||
| Total lease expense | 1,029 | 797 | 2,991 | 1,521 | 
| Selling, General and Administrative Expenses [Member] | ||||
| Total lease expense | $ 63 | $ 54 | $ 182 | $ 166 | 
| X | ||||||||||
- Definition Amount of operating lease expense. Excludes sublease income. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
  | 
| X | ||||||||||
- Details 
  | 
| X | ||||||||||
- Details 
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