Debt - Schedule of Foreign Subsidiary Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018
Line of Credit Facility [Line Items]
Less – current maturities	$ (6,238)	$ (5,944)
Total long-term debt	1,944	2,332
Foreign subsidiary borrowings
Line of Credit Facility [Line Items]
Total debt	7,783	7,949
Less – current maturities	(6,101)	(5,822)
Total long-term debt	1,682	2,127
Receivables pledged as collateral	1,366	2,007
Other | Foreign subsidiary borrowings
Line of Credit Facility [Line Items]
Total debt	3,051	3,548
Short-term borrowings | Foreign subsidiary borrowings
Line of Credit Facility [Line Items]
Total debt	4,127	3,472
Factor | Foreign subsidiary borrowings
Line of Credit Facility [Line Items]
Total debt	$ 605	$ 929