Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Jun. 30, 2011
Condensed Consolidated Balance Sheets [Abstract]
Held-to-maturity securitiies, fair value	$ 1,076	$ 357
Held-to-maturity securities, fair value non-current	903	1,651
Other investments, cost	13,192	8,360
Property plant and equipment, accumulated depreciation	$ 3,819	$ 3,282
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	24,017,609	23,944,660
Common stock, shares outstanding	23,315,682	23,364,644
Treasury stock, shares	701,927	580,016