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Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Sep. 30, 2018
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
 The components of accumulated other comprehensive loss are as follows:
 
 
Effect of Foreign Currency Translation
 
Minimum Pension Liability
 
Accumulated Other Comprehensive Loss
 
 
(Amounts in thousands)
Balance as of September 30, 2016
 
$
(2,807
)
 
$
(9,124
)
 
$
(11,931
)
Change in period
 
(407
)
 
1,944

 
1,537

Tax effect of change in period
 
—

 
231

 
231

Balance as of September 30, 2017
 
$
(3,214
)
 
$
(6,949
)
 
$
(10,163
)
Change in period
 
(1,132
)
 
475

 
(657
)
Tax effect of change in period
 
—

 
(5
)
 
(5
)
Balance as of September 30, 2018
 
$
(4,346
)
 
$
(6,479
)
 
$
(10,825
)