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Equity Incentive Plan Equity Incentive Plan (Tables)
 9 Months Ended
Jun. 30, 2020
Share-based Payment Arrangement [Abstract]  
Share-based Payment Arrangement, Cost by Plan [Table Text Block]
The following table presents share-based compensation expense recognized during the periods presented.
Three Months Ended June 30, Nine Months Ended June 30,
2020201920202019
Stock option expense$119  $198  $441  $635  
Restricted stock units expense832  918  2,491  2,708  
Performance share units expense227  $—  595  —  
Total stock-based compensation expense$1,178  $1,116  $3,527  $3,343