Related-Party Transactions

6 Months Ended

Mar. 31, 2012

Securities and Equity Investments [Abstract]

Investment in EPV Solar

Our investment in EnerTech was approximately 2% of the overall ownership in EnerTech at March 31, 2012 and September 30, 2011. As such, we accounted for this investment using the cost method of accounting.

EnerTech's investment portfolio periodically results in unrealized losses reflecting a possible, other-than-temporary impairment of our investment. If the facts arise that lead us to determine that any unrealized losses are not temporary, we would write-down our investment in EnerTech through a charge to other expense in the period of such determination. The carrying value of our investment in EnerTech at March 31, 2012 and September 30, 2011 was $1,003 and $1,003, respectively, and is currently recorded as a component of Other Non-Current Assets in our Consolidated Balance Sheets. The following table presents the reconciliation of the carrying value and unrealized gains (losses) to the fair value of the investment in EnerTech as of March 31, 2012 and September 30, 2011:

Investment in Enertech

	March 31,		September 30,
	2012		2011
Carrying value	$	1,003	$	1,003
Unrealized gains (losses)		94		-
Fair value	$	1,097	$	1,003

On December 31, 2011, EnerTech's general partner, with the consent of the fund's investors, extended the fund through December 31, 2012. The fund will terminate on this date unless extended by the fund's valuation committee. The fund may be extended for another one-year period through December 31, 2013with the consent of the fund's valuation committee.

Arbinet Corporation

On May 15, 2006, we received a distribution from the investment in EnerTech of 32,967 shares in Arbinet Corporation. We sold these shares in fiscal 2011; accordingly, the amount of unrealized holding losses included in other comprehensive income at March 31, 2012 and 2010 is $0and $0, respectively.