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Revenue Recognition (Detail Textual) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Change In Accounting Estimate [Line Items]    
Income before income taxes $ 124,444 $ 83,346
Diluted earnings per share $ 3.67 $ 2.66
EAC Adjustments    
Change In Accounting Estimate [Line Items]    
Income before income taxes $ 7,800 $ 6,500
Diluted earnings per share $ 0.22 $ 0.19