Fair Value Measurements (Tables)

6 Months Ended

Mar. 31, 2013

Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis as of March 31, 2013 (in thousands):

	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value as of March  31, 2013
Assets:
Cash equivalents	$	—	$	9,802	$	—	$	9,802
Available-for-sale debt securities:
U.S. government and government agency obligations		—		34,377		—		34,377
Mortgage-backed securities		—		2,601		—		2,601
Municipal bonds		—		3,447		—		3,447
Asset-backed securities		—		532		—		532
Corporate bonds		—		1,696		—		1,696
Total assets measured at fair value	$	—	$	52,455	$	—	$	52,455

The following table presents information about the Company’s assets and liabilities measured at fair value on a recurring basis as of September 30, 2012 (in thousands):

	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value as of September 30, 2012
Assets:
Cash equivalents	$	—	$	5,101	$	—	$	5,101
Available-for-sale debt securities:
U.S. government and government agency obligations		—		28,854		—		28,854
Mortgage-backed securities		—		2,999		—		2,999
Municipal bonds		—		3,213		—		3,213
Asset-backed securities		—		598		—		598
Corporate bonds		—		6,886		—		6,886
Other assets		718		—		—		718
Total assets measured at fair value	$	718	$	47,651	$	—	$	48,369

Reconciliation of Financial Assets Measured at Fair Value on Recurring Basis using Significant Unobservable Inputs

The following tables provide a reconciliation of financial assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) (in thousands). Transfers of instruments into and out of Level 3 are based on beginning of period values.

	Fair Value Measurements Using Significant Unobservable Inputs (Level 3) Six Months Ended March 31, 2012 Available-for-Sale Debt Securities
	Mortgage- Backed  Securities			Asset- Backed  Securities			Total
Balance at September 30, 2011	$	15		$	9		$	24
Transfers into Level 3		—			—			—
Transfers out of Level 3		(15	)		(9	)		(24	)
Total realized and unrealized gains (losses):
Included in other comprehensive (loss) income		—			—			—
Purchases, issuances, sales and settlements, net		—			—			—
Balance at March 31, 2012	$	—		$	—		$	—