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Correction of Prior Year Interim Consolidated Financial Statements (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Consolidated statements of operations    
Provision (benefit) for income taxes $ 4,739 $ 3,887
Net income (loss) $ 18,753 $ 18,932
Net income (loss) per share - basic (in dollars per share) $ 0.48 $ 0.49
Net income (loss) per share - diluted (in dollars per share) $ 0.47 $ 0.48
As reported    
Consolidated statements of operations    
Provision (benefit) for income taxes   $ 2,338
Net income (loss)   $ 20,481
Net income (loss) per share - basic (in dollars per share)   $ 0.53
Net income (loss) per share - diluted (in dollars per share)   $ 0.52
Correction    
Consolidated statements of operations    
Provision (benefit) for income taxes   $ 1,549
Net income (loss)   $ (1,549)
Net income (loss) per share - basic (in dollars per share)   $ (0.04)
Net income (loss) per share - diluted (in dollars per share)   $ (0.04)