Debt - Schedule of Foreign Subsidiary Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Sep. 30, 2020
Line of Credit Facility [Line Items]
Less – current maturities	$ (10,152)	$ (7,144)
Total long-term debt	3,486	4,606
Foreign subsidiary borrowings
Line of Credit Facility [Line Items]
Total debt	7,883	5,759
Less – current maturities	(5,892)	(3,544)
Total long-term debt	1,991	2,215
Receivables pledged as collateral	955	1,859
Term loan | Foreign subsidiary borrowings
Line of Credit Facility [Line Items]
Total debt	2,783	2,670
Short-term borrowings | Foreign subsidiary borrowings
Line of Credit Facility [Line Items]
Total debt	3,018	2,620
Factor | Foreign subsidiary borrowings
Line of Credit Facility [Line Items]
Total debt	$ 2,082	$ 469