Strategic Investments and Fair Value of Financial Instruments (Details) (Albemarle & Bond Holdings [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Albemarle & Bond Holdings [Member]
Summary of financial information for Albemarle & Bond
Current assets	$ 125,862	$ 97,476
Non-current assets	64,325	52,325
Total assets	190,187	149,801
Current liabilities	18,620	17,898
Non-current liabilities	57,016	42,078
Shareholders' equity	114,551	89,825
Total liabilities and shareholders' equity	190,187	149,801
Gross revenues	162,002	129,794
Gross profit	97,197	84,850
Profit for the year (net income)	$ 24,324	$ 22,792

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