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Accumulated Other Comprehensive Loss
 3 Months Ended
Dec. 31, 2020
Equity [Abstract]  
Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss
The components of accumulated other comprehensive loss are as follows:
December 31,
2020		September 30,
2020
Foreign currency translation adjustment$(4,970)$(5,257)
Retirement plan liability adjustment, net of tax(8,000)(8,211)
Total accumulated other comprehensive loss$(12,970)$(13,468)