Cash, Cash Equivalents and Investments

A summary of our cash, cash equivalents and available-for-sale investments at February 28, 2017 is as follows (in thousands):



	Amortized Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash	$	210,872	$	—	$	—		$	210,872
Money market funds	16,035		—		—			16,035
State and municipal bond obligations	27,289		—		(6		)	27,283
U.S. treasury bonds	5,686		—		(24		)	5,662
Corporate bonds	4,339		1		—			4,340
Total	$	264,221	$	1	$	(30	)	$	264,192

A summary of our cash, cash equivalents and available-for-sale investments at November 30, 2016 is as follows (in thousands):



	Amortized Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash	$	196,863	$	—	$	—		$	196,863
Money market funds	10,173		—		—			10,173
State and municipal bond obligations	32,831		—		(107		)	32,724
U.S. treasury bonds	6,542		—		(29		)	6,513
Corporate bonds	3,485		—		(4		)	3,481
Total	$	249,894	$	—	$	(140	)	$	249,754

Such amounts are classified on our condensed consolidated balance sheets as follows (in thousands):



	February 28, 2017				November 30, 2016
	Cash and Equivalents		Short-Term Investments		Cash and Equivalents		Short-Term Investments
Cash	$	210,872	$	—	$	196,863	$	—
Money market funds	16,035		—		10,173		—
State and municipal bond obligations	—		27,283		—		32,724
U.S. treasury bonds	—		5,662		—		6,513
Corporate bonds	—		4,340		—		3,481
Total	$	226,907	$	37,285	$	207,036	$	42,718

The fair value of debt securities by contractual maturity is as follows (in thousands):


(1)	Includes state and municipal bond obligations, which are securities representing investments available for current operations and are classified as current in the consolidated balance sheets.

We did not hold any investments with continuous unrealized losses as of February 28, 2017 or November 30, 2016.