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Revenues - Incremental Costs of Obtaining a Contract with a Customer (Details)
3 Months Ended 6 Months Ended
Dec. 31, 2018
USD ($)
Dec. 31, 2018
USD ($)
Revenue from Contract with Customer [Abstract]    
Capitalized contract cost, amortization period 6 years 6 years
Capitalized Contract Cost [Roll Forward]    
Capitalized costs to obtain a contract as of July 1, 2018   $ 35,151,000
New capitalized costs incurred   9,532,000
Amortization of capitalized costs   (4,390,000)
Adjustments on account of foreign exchange   (311,000)
Capitalized costs to obtain a contract as of December 31, 2018 $ 39,982,000 39,982,000
Impairment loss $ 0 $ 0