Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	May 31, 2017	May 31, 2016
Receivables, allowances	$ 3,444	$ 4,579
Other intangible assets, accumulated amortization	$ 63,134	$ 49,532
Preferred shares, without par value	$ 0	$ 0
Preferred shares, shares authorized	1,000,000	1,000,000
Preferred shares, shares issued	0	0
Preferred shares, shares outstanding	0	0
Common stock, without par value	$ 0	$ 0
Common shares, authorized	150,000,000	150,000,000
Common shares, shares issued	62,802,456	61,533,668
Common shares, shares outstanding	62,802,456	61,533,668
Accumulated other comprehensive income (loss), taxes	$ 5,310	$ 4,768