Lease Obligations - Additional Information (Details) € in Thousands			12 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 EUR (€)	Feb. 28, 2022 USD ($)	Feb. 28, 2021 USD ($)	Feb. 29, 2020 USD ($)	Mar. 01, 2019 USD ($)
Leases [Line Items]
Operating lease, right of use asset			$ 4,464,000	$ 4,572,000
Lease liabilities			4,553,000	4,701,000
Short term leases			0
Gain related to execution of sale transaction					$ 4,057,000
Other Income (Expense) [Member]
Leases [Line Items]
Rental income			$ 678,000	$ 739,000	692,000
Minimum [Member]
Leases [Line Items]
Operating and finance leases remaining lease terms			1 year
Maximum [Member]
Leases [Line Items]
Operating and finance leases remaining lease terms			9 years
Selling Real Property in Pulheim, Germany to CLM S.A. RL [Member]
Leases [Line Items]
Sale leaseback transaction, selling price | €		€ 10,920
Net proceeds from sale leaseback transaction after transactional costs and repayment of outstanding mortgage	$ 9,500,000
Sale leaseback transaction transaction costs	270,000
Repayment of outstanding mortgage on the property	$ 2,104,000
Sale leaseback transaction initial lease term				5 years
Gain related to execution of sale transaction					$ 4,057,000
Adoption of ASC 842 [Member]
Leases [Line Items]
Operating lease, right of use asset						$ 2,227,000
Lease liabilities						$ 2,243,000