Consolidated Condensed Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (2,038)	$ (1,657)	$ (2,949)	$ (4,266)
Other comprehensive income (loss):
Foreign currency translation adjustment	534	245	831	(803)
Retirement plan liability adjustment	161	214	323	448
Interest rate swap agreement adjustment	0	13	19	29
Comprehensive loss	$ (1,343)	$ (1,185)	$ (1,776)	$ (4,592)