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Note 10 - Accrued Expenses (Tables)
3 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Accrued Liabilities [Table Text Block]
   
As of
 
   
December 31
,
   
September 30,
 
   
2018
   
201
8
 
Accrued property, sales and use tax payable
  $
6,855
     
7,043
 
Income tax payable
   
1,550
     
903
 
Payroll and employee-related expenses
   
10,302
     
6,992
 
Accrued marketing expenses
   
289
     
335
 
Deferred revenue related to gift card sales
   
1,554
     
1,453
 
Other
   
1,041
     
1,125
 
Total accrued expenses
  $
21,591
     
17,851