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Revenues - Schedule of Reconciliation of Contract Liabilities with Customers (Details)
$ in Thousands
9 Months Ended
Jun. 30, 2019
USD ($)
Contract liabilities with customers beginning $ 134
Consideration Received 980
Recognized in Revenue (520)
Contract liabilities with customers ending 594
Ad Revenue [Member]  
Contract liabilities with customers beginning 126
Consideration Received 492
Recognized in Revenue (475)
Contract liabilities with customers ending 143
Expo Revenue [Member]  
Contract liabilities with customers beginning
Consideration Received 444
Recognized in Revenue (2)
Contract liabilities with customers ending 442
Other [Member]  
Contract liabilities with customers beginning 8
Consideration Received 44
Recognized in Revenue (43)
Contract liabilities with customers ending $ 9