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Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Aug. 01, 2017
Jul. 05, 2017
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Subsequent Event [Line Items]            
Total cash payment         $ 5,346 $ 125,498
Cash dividend declared (USD per share)     $ 0.10 $ 0.10 $ 0.30 $ 0.30
Subsequent Event            
Subsequent Event [Line Items]            
Cash dividend declared (USD per share) $ 0.10          
Cash dividend declared, payment date Sep. 29, 2017          
Cash dividend declared, record date Sep. 08, 2017          
Subsequent Event | PBMMI and Novare            
Subsequent Event [Line Items]            
Total cash payment   $ 34,300