5. FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

9 Months Ended

Feb. 28, 2021

Fair Value Disclosures [Abstract]

Fair value by hierarchy

    The following table summarizes the Company’s financial assets measured at fair value on a recurring basis as of February 28, 2021 (in thousands):

	Balance as of
	February 28, 2021		Level 1		Level 2		Level 3
Money market funds	$	80	$	80	$	—	$	—
Assets	$	80	$	80	$	—	$	—

    The following table summarizes the Company’s financial assets measured at fair value on a recurring basis as of May 31, 2020 (in thousands):

	Balance as of May 31, 2020		Level 1		Level 2		Level 3
Money market funds	$	80	$	80	$	—	$	—
Assets	$	80	$	80	$	—	$	—