Marketable Securities (Tables)

3 Months Ended

Dec. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Summary of Marketable Securities Including Accrued Interest Receivable

The following is a summary of marketable securities (included in short and long-term marketable securities in the Consolidated Balance Sheets), including accrued interest receivable, as of December 31, 2014 and September 30, 2014 (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
December 31, 2014:
U.S. Treasury securities and obligations of U.S. government agencies	$	29,054	$	—	$	(45	)	$	29,009
Corporate securities	64,948		4		(198		)	64,754
Mortgage-backed securities	937		31		—			968
Other debt securities	7,361		—		(9		)	7,352
Municipal securities	18,800		1		(31		)	18,770
Bank certificate of deposits	20,083		1		(1		)	20,083
	$	141,183	$	37	$	(284	)	$	140,936
September 30, 2014:
U.S. Treasury securities and obligations of U.S. government agencies	$	26,052	$	1	$	(39	)	$	26,014
Corporate securities	74,614		23		(174		)	74,463
Mortgage-backed securities	964		36		—			1,000
Other debt securities	7,358		—		(10		)	7,348
Municipal securities	15,888		1		(16		)	15,873
Bank certificate of deposits	26,645		2		(3		)	26,644
	$	151,521	$	63	$	(242	)	$	151,342

Fair Value of Marketable Securities by Contractual Maturity

The fair value of the marketable securities at December 31, 2014 by contractual maturity, are shown below (in thousands):

	Fair Value
Due in one year or less	$	58,648
Due after one year through five years	78,958
Due after ten years	3,330
	$	140,936