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Revenues - Schedule of Reconciliation of Contract Liabilities with Customers (Details)
$ in Thousands
3 Months Ended
Dec. 31, 2019
USD ($)
Contract liabilities with customers beginning $ 83
Consideration Received 496
Recognized in Revenue (153)
Contract liabilities with customers ending 426
Ad Revenue [Member]  
Contract liabilities with customers beginning 76
Consideration Received 221
Recognized in Revenue (145)
Contract liabilities with customers ending 152
Expo Revenue [Member]  
Contract liabilities with customers beginning
Consideration Received 269
Recognized in Revenue
Contract liabilities with customers ending 269
Other [Member]  
Contract liabilities with customers beginning 7
Consideration Received 6
Recognized in Revenue (8)
Contract liabilities with customers ending $ 5