FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Mar. 31, 2017

FAIR VALUE MEASUREMENTS [Abstract]

Financial Assets Measured at Fair Value on a Recurring Basis

The following table summarizes financial assets, measured at fair value on a recurring basis, by level of input within the fair value hierarchy as of March 31, 2017 and 2016 (in thousands):

	As of March 31, 2017
	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
	Level 1		Level 2		Level 3		Total
Assets
Cash equivalents	$	584	$	—	$	—	$	584
Available-for-sale investments:
Corporate bonds		—		6,377		—		6,377
Municipal bonds		—		662		—		662
Total assets at fair value	$	584	$	7,039	$	—	$	7,623

	As of March 31, 2016
	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
	Level 1		Level 2		Level 3		Total
Assets
Cash equivalents	$	9,834	$	—	$	—	$	9,834
Available-for-sale investments:
Corporate bonds		—		7,025		—		7,025
Total assets at fair value	$	9,834	$	7,025	$	—	$	16,859