Fair Value of Financial Instruments (Tables)

9 Months Ended

Jun. 30, 2012

Fair Value of Financial Instruments

Summary of assets and liabilities measured and recorded at fair value on Balance Sheet on a recurring basis

		June 30, 2012
		Level 1				Level 2				Total
Assets
Cash equivalents		$		173,451		$		—		$		173,451
Current derivative assets		—				648				648
Non-current derivative assets		—				4,471				4,471
Total assets measured at fair value		$		173,451		$		5,119		$		178,570
Liabilities
Current derivative liabilities		$		—		$		3,071		$		3,071
Non-current derivative liabilities		—				7,010				7,010
Total liabilities measured at fair value		$		—		$		10,081		$		10,081
	September 30, 2011
	Level 1				Level 2				Total
Assets
Cash equivalents	$		266,842		$		—		$		266,842
Short-term investments - U.S. government agency securities	—				25,829				25,829
Current derivative assets	—				7,466				7,466
Total assets measured at fair value	$		266,842		$		33,295		$		300,137
Liabilities
Current derivative liabilities	$		—		$		7,522		$		7,522
Non-current derivative liabilities	—				6,164				6,164
Total liabilities measured at fair value	$		—		$		13,686		$		13,686