Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Current assets
Accounts receivable allowances	$ 7,975	$ 8,331
Shareholders' equity
Preferred stock, par value per share	$ 1	$ 1
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock [Member]
Shareholders' equity
Common stock, par value per share	$ 1	$ 1
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	39,433,000	39,272,000
Common stock, shares outstanding	39,433,000	39,272,000
Common stock, treasury	24,754,000	24,607,000
Class B stock $1 par value [Member]
Shareholders' equity
Common stock, par value per share	$ 1	$ 1
Common stock, shares authorized	15,000,000	15,000,000
Common stock, shares issued	5,119,000	5,284,000
Common stock, shares outstanding	5,119,000	5,284,000