Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, allowances	$ 1,453	$ 1,669
Finance loans receivable, allowances	3,919	4,494
Property, plant and equipment, accumulated depreciation	$ 112,336	$ 99,969
Common stock, shares authorized	200,000,000	200,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares issued	52,521,345	55,271,954
Common stock, shares outstanding	52,521,345	55,271,954
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares issued
Preferred stock, shares outstanding
Treasury shares, shares outstanding	23,621,541	20,483,932