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Schedule I - Condensed Unconsolidated Balance Sheets (Parenthetical) (Details) - USD ($)
$ / shares in Units, $ in Thousands
Jun. 30, 2019
Jun. 30, 2018
Nov. 08, 2017
Nov. 07, 2017
Noncontrolling interest $ 152,265 $ 147,568    
Common Stock, Par or Stated Value Per Share $ 0.002 $ 0.002    
Common shares, authorized (in shares) 100,000,000 100,000,000 100,000,000 50,000,000
Common stock, shares issued (in shares) 31,163,000 30,400,000    
Common stock, shares outstanding (in shares) 24,517,000 23,860,000    
Preferred stock, par value (in dollars per share) $ 0.002 $ 0.002    
Preferred stock, shares authorized (in shares) 10,000,000 10,000,000    
Preferred stock, shares issued (in shares) 0 0    
Preferred stock, shares outstanding (in shares) 0 0    
Treasury Stock, Shares 6,646,000 6,540,000    
Parent Company        
Noncontrolling interest $ 152,265 $ 147,568