Debt - Schedule of Foreign Subsidiary Borrowings (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Sep. 30, 2019
Line of Credit Facility [Line Items]
Less – current maturities	$ (6,682)	$ (5,786)
Total long-term debt	4,490	2,052
Foreign subsidiary borrowings
Line of Credit Facility [Line Items]
Total debt	5,159	6,592
Less – current maturities	(4,323)	(5,501)
Total long-term debt	836	1,091
Receivables pledged as collateral	1,322	672
Term loan | Foreign subsidiary borrowings
Line of Credit Facility [Line Items]
Total debt	1,890	2,318
Short-term borrowings | Foreign subsidiary borrowings
Line of Credit Facility [Line Items]
Total debt	3,071	3,744
Factor | Foreign subsidiary borrowings
Line of Credit Facility [Line Items]
Total debt	$ 198	$ 530