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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Jul. 31, 2025
Apr. 30, 2025
Statement of Financial Position [Abstract]    
Allowances for credit losses $ 5 $ 5
Net of accumulated depreciation and amortization $ 376,471 $ 368,811
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 20,000,000 20,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 75,988,368 75,789,455
Common stock, shares outstanding 44,310,374 44,111,461
Treasury Stock, Common, Shares 31,677,994 31,677,994