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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
May 31, 2017
May 31, 2016
Accounts receivable, allowance $ 2,000 $ 1,500
Accumulated Amortization $ 30,777 $ 24,807
Preferred stock, par value $ 1.00 $ 1.00
Preferred stock, shares authorized 100,000 100,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.16 $ 0.16
Common stock, shares authorized 60,000,000 60,000,000
Common stock, shares issued 38,199,367 37,567,689
Common stock, shares outstanding 38,199,367 37,567,689
Customer-based intangibles    
Accumulated Amortization $ 20,846 $ 17,277
Other Intangible Assets    
Accumulated Amortization $ 9,931 $ 7,530