Cash, Cash Equivalents and Investments

A summary of our cash, cash equivalents and available-for-sale investments at May 31, 2018 is as follows (in thousands):



	Amortized Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash	$	96,523	$	—	$	—		$	96,523
Money market funds	598		—		—			598
State and municipal bond obligations	32,323		—		(184		)	32,139
U.S. treasury bonds	6,704		—		(28		)	6,676
Corporate bonds	8,334		—		(70		)	8,264
Total	$	144,482	$	—	$	(282	)	$	144,200

A summary of our cash, cash equivalents and available-for-sale investments at November 30, 2017 is as follows (in thousands):



	Amortized Cost Basis		Unrealized Gains		Unrealized Losses			Fair Value
Cash	$	130,547	$	—	$	—		$	130,547
Money market funds	2,917		—		—			2,917
State and municipal bond obligations	40,458		—		(231		)	40,227
U.S. treasury bonds	3,517		—		(26		)	3,491
Corporate bonds	6,463		—		(36		)	6,427
Total	$	183,902	$	—	$	(293	)	$	183,609

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



	May 31, 2018				November 30, 2017
	Cash and Equivalents		Short-Term Investments		Cash and Equivalents		Short-Term Investments
Cash	$	96,523	$	—	$	130,547	$	—
Money market funds	598		—		2,917		—
State and municipal bond obligations	—		32,139		—		40,227
U.S. treasury bonds	—		6,676		—		3,491
Corporate bonds	—		8,264		—		6,427
Total	$	97,121	$	47,079	$	133,464	$	50,145

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


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

We did not hold any investments with continuous unrealized losses as of May 31, 2018 or November 30, 2017.