Cash, Cash Equivalents and Marketable Securities Available for Sale (Tables)

12 Months Ended

Sep. 30, 2013

Summary of Cash, Cash Equivalents and Marketable Securities Available for Sale

The following is a summary of cash, cash equivalents and marketable securities available for sale at September 30, 2013 and 2012:

	September 30, 2013								September 30, 2012
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In thousands)
Cash and Cash Equivalents:
Cash	$	82,493	$	—	$	—	$	82,493	$	70,965	$	—	$	—		$	70,965
Money market funds		439		—		—		439		397		—		—			397
Non U.S. money market funds		246		—		—		246		247		—		—			247
Total	$	83,178	$	—	$	—	$	83,178	$	71,609	$	—	$	—		$	71,609
Short-term Marketable Securities:
U.S. government obligations	$	—	$	—	$	—	$	—	$	20,001	$	—	$	(1	)	$	20,000
U.S. corporate debt		—		—		—		—		2,007		1		—			2,008
Total	$	—	$	—	$	—	$	—	$	22,008	$	1	$	(1	)	$	22,008
Long-term Marketable Securities:
Marketable equity securities	$	6,006	$	1,101	$	—	$	7,107	$	5,016	$	401	$	—		$	5,417

Gross Unrealized Losses and Fair Value of Investments

The following table shows the gross unrealized losses and fair value of our investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at September 30, 2012:

	September 30, 2012
	Less than 12 months					12 months or greater				Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(In thousands)
Description of Securities:
U.S. government obligations	$	15,000	$	(1	)	$	—	$	—	$	15,000	$	(1	)
Total	$	15,000	$	(1	)	$	—	$	—	$	15,000	$	(1	)