FAIR VALUE MEASUREMENTS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Fair Value, Measurements, Recurring [Member]	Mar. 31, 2014 Fair Value, Measurements, Recurring [Member]	Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets Level 1 [Member]	Mar. 31, 2014 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets Level 1 [Member]	Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs Level 2 [Member]	Mar. 31, 2014 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs Level 2 [Member]	Sep. 30, 2014 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs Level 3 [Member]	Mar. 31, 2014 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs Level 3 [Member]
Assets [Abstract]
Cash equivalents					$ 11,053	$ 5,035	$ 11,053	$ 5,035	$ 0	$ 0	$ 0	$ 0
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	0	0	0	0
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount	0	0	0	0
Fair Value, Asset Transfers Into Level 3, Amount	0	0	0	0
Fair Value, Asset Transfers Out of Level 3, Amount	0	0	0	0
Available-for-sale Investments [Abstract]
Certificates of deposit						499		0		499		0
Corporate bonds					10,337	10,382	0	0	10,337	10,382	0	0
Total assets at fair value					21,390	15,916	11,053	5,035	10,337	10,881	0	0
Liabilities [Abstract]
Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount	0	0	0	0
Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount	0	0	0	0
Fair Value, Liability Transfers Into Level 3, Amount	0	0	0	0
Fair Value, Liability Transfers Out of Level 3, Amount	0	0	0	0
Total liabilities at fair value							$ 0	$ 0	$ 0	$ 0	$ 0	$ 0