Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Apr. 30, 2017
Apr. 30, 2016
Allowance for doubtful accounts $ 15,455 $ 11,292
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 150,000,000 150,000,000
Common stock, shares issued 70,811,000 69,723,000
Common stock, shares outstanding 56,938,000 57,272,000