3. CASH, CASH EQUIVALENTS AND INVESTMENTS

12 Months Ended

May 31, 2018

Cash and Cash Equivalents [Abstract]

CASH, CASH EQUIVALENTS AND INVESTMENTS

3. CASH, CASH EQUIVALENTS AND INVESTMENTS:

    The following table summarizes the Company’s cash, cash equivalents and investments by security type at May 31, 2018 (in thousands):

	Cost		Gross Unrealized Loss		Estimated Fair Value
Cash	$	3,132	$	—	$	3,132
Cash equivalents:
Money market funds		7,733		—		7,733
U.S. Treasury securities		5,983		—		5,983
Total Cash equivalents		13,716		—		13,716
Total Cash and Cash equivalents	$	16,848	$	—	$	16,848
Long-term investments:
Certificate of deposit	$	80	$	—	$	80
Total Cash, Cash equivalents and Investments	$	16,928	$	—	$	16,928

    Long-term investments are included in other assets on the accompanying consolidated balance sheet at May 31. 2018.

    Unrealized gains and temporary losses on investments classified as available-for-sale are included within accumulated other comprehensive income (“AOCI”), net of any related tax effect. Upon realization, those amounts are reclassified from AOCI to results of operations.

    The following table summarizes the Company’s cash, cash equivalents and investments by security type at May 31, 2017 (in thousands):

	Cost		Gross Unrealized Loss		Estimated Fair Value
Cash	$	2,287	$	—	$	2,287
Cash equivalents:
Money market funds		15,516		—		15,516
Total Cash equivalents		15,516		—		15,516
Total Cash and Cash equivalents	$	17,803	$	—	$	17,803
Long-term investments:
Certificate of deposit	$	50	$	—	$	50
Total Cash, Cash equivalents and Investments	$	17,853	$	—	$	17,853