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Income Taxes - Other Disclosures (Details) (USD $)	3 Months Ended			9 Months Ended
Income Taxes - Other Disclosures (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Sep. 30, 2011
Income and other taxes	$ 1,106,000			$ 1,106,000		$ 1,269,000
Liability for uncertain tax positions and foreign taxes, current	800,000			800,000
Foreign income tax:
Equity Method Investment, Deemed Capital Distribution and Reinvestment, EMCORE		14,800,000
Foreign income tax rate				10.00%
Foreign income tax expense on capital distributions	$ 0		$ 0	$ 1,644,000	$ 0

- Definition

Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations.

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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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