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Strategic Investments and Fair Value of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended
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Dec. 31, 2011 | Dec. 31, 2010
Summary of financial information for Albemarle & Bond |  |
Current assets | $ 128,289 | $ 104,408
Non-current assets | 121,835 | 109,336
Total assets | 250,124 | 213,744
Current liabilities | 33,290 | 30,844
Non-current liabilities | 37,797 | 11,970
Shareholders' equity | 179,037 | 170,930
Total liabilities and shareholders' equity | 250,124 | 213,744
Gross revenues | 115,256 | 82,343
Gross profit | 76,405 | 57,038
Profit for the year (net income) | 13,668 | 13,528
Albemarle & Bond Holdings [Member] |  |
Summary of financial information for Albemarle & Bond |  |
Current assets | 134,387 | 121,519
Non-current assets | 65,354 | 56,755
Total assets | 199,741 | 178,274
Current liabilities | 21,021 | 25,801
Non-current liabilities | 62,169 | 53,497
Shareholders' equity | 116,551 | 98,976
Total liabilities and shareholders' equity | 199,741 | 178,274
Gross revenues | 99,804 | 76,424
Gross profit | 58,165 | 46,745
Profit for the year (net income) | $ 14,208 | $ 12,088

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