Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Statement Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, allowances	$ 6,342	$ 9,887
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	27,888,217	27,888,217
Common stock, shares outstanding	26,817,618	26,600,562
Treasury stock, shares	1,070,599	1,287,655