Quarterly report pursuant to Section 13 or 15(d)

Inventories - Narrative (Details)

v3.21.2
Inventories - Narrative (Details) - USD ($)
9 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Sep. 30, 2020
Sep. 30, 2019
Inventory Disclosure [Abstract]        
Proceeds from federal relief grants $ 4,299,000 $ 15,597,000 $ 4,629,000 $ 4,629,000