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Allowance For Doubtful Accounts - Changes In Carrying Amount (Details) - USD ($)
$ in Thousands
6 Months Ended
Dec. 31, 2016
Jun. 30, 2016
Allowance for Doubtful Accounts Receivable [Roll Forward]    
Balance as of June 30, 2016 $ 6,740  
Bad debt expense 3,631  
Write-off /adjustments (2,468)  
Balance as of December 31, 2016 7,903  
Unbilled receivables $ 28,600 $ 35,600