Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Current Assets:
Accounts Receivable, less allowances	$ 11,540	$ 9,628
Noncurrent Assets:
Property, less accumulated depreciation	$ 172,263	$ 166,143
Shareholders’ Equity
Preferred stock, par value	$ 0.00	$ 0.00
Preferred stock, shares authorized	2,500	2,500
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.00	$ 0.00
Common stock, shares authorized	80,000	80,000
Common stock, shares issued	54,213	54,213
Common stock, shares outstanding	38,696	39,041
Treasury shares	15,517	15,172