Fair Value Measurements (Tables)

12 Months Ended

Sep. 30, 2011

Assets and Liabilities Measured at Fair Value on a Recurring Basis

Assets and liabilities of the Company measured at fair value on a recurring basis as of September 30, 2011 and 2010 are summarized as follows (in thousands):

			Fair Value Measurements at Reporting Date Using
			Quoted Prices in		Significant Other		Significant
			Active Markets for		Observable		Unobservable
	September 30,		Identical Assets		Inputs		Inputs
Description	2011		(Level 1)		(Level 2)		(Level 3)
Assets
Cash Equivalents	$	9,576	$	9,576	$	—	$	—
Available-for-sale securities		146,985		63,331		83,654		—
Total Assets	$	156,561	$	72,907	$	83,654	$	—

			Fair Value Measurements at Reporting Date Using
			Quoted Prices in		Significant Other		Significant
			Active Markets for		Observable		Unobservable
	September 30,		Identical Assets		Inputs		Inputs
	2010		(Level 1)		(Level 2)		(Level 3)
Assets
Cash Equivalents	$	21,130	$	21,130	$	—	$	—
Available-for-sale securities		82,604		38,798		43,806		—
Total Assets	$	103,734	$	59,928	$	43,806	$	—