14. Marketable Securities

The Company invests its cash in marketable securities and classifies them as available-for-sale. The Company records these securities at fair value. Marketable securities reported as current assets represent investments that mature within one year from the balance sheet date. Long-term marketable securities represent investments with maturity dates greater than one year from the balance sheet date. At the time the maturity dates of these investments become one year or less, the securities are reclassified to current assets. Unrealized gains and losses are excluded from earnings and reported in a separate component of stockholders’ equity until they are sold or mature. At the time of sale, any gains or losses, calculated by the specific identification method, will be recognized as a component of operating results.

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 March 31, 2012 and September 30, 2011 (in thousands):


	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
March 31, 2012:
U.S. Treasury securities and obligations of U.S. government agencies	$	28,644	$	16	$	(9	)	$	28,651
Corporate securities		67,286		128		(36	)		67,378
Mortgage-backed securities(1)		1,485		35		(7	)		1,513
Other debt securities		413		—		—			413
Municipal securities		22,840		26		(1	)		22,865
Bank certificate of deposits		2,295		1		—			2,296

	$	122,963	$	206	$	(53	)	$	123,116

September 30, 2011:
U.S. Treasury securities and obligations of U.S. government agencies	$	53,342	$	17	$	(21	)	$	53,338
Corporate securities		66,045		50		(203	)		65,892
Mortgage-backed securities(1)		786		26		(3	)		809
Other debt securities		434		—		—			434
Municipal securities		24,915		9		(67	)		24,857
Bank certificate of deposits		1,655		—		—			1,655

	$	147,177	$	102	$	(294	)	$	146,985

(1)	Fair value amounts include approximately $0.7 million of investments in the Federal Home Loan Mortgage and Federal National Mortgage Association.

The fair value of the marketable securities at March 31, 2012 by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties (in thousands).


	Fair Value
Due in one year or less	$	71,057
Due after one year through five years		48,071
Due after ten years		3,988

	$	123,116