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Income Taxes (Tables)
9 Months Ended
Jun. 30, 2021
Income Tax Disclosure [Abstract]  
Schedule of Calculation of the Effective Income Tax Rate
The calculation of the effective tax rate is as follows (in thousands):
 Three months ended June 30,Nine months ended June 30,
 2021202020212020
Income (loss) before income taxes$(1,338)$2,922 $(2,767)$15,810 
Income tax provision (benefit)703 (559)(138)2,133 
Net income (loss)$(2,041)$3,481 $(2,629)$13,677 
Effective tax rate(53)%(19)%%13 %