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7. FINANCIAL INSTRUMENTS (Details) $ in Thousands	Dec. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)	Nov. 23, 2015
Fair value measurements
Discount rate		14.5	14.8
Short-term investments	$ 11,773	$ 9,717
Long-term investments	3,396	$ 5,792
Minimum
Fair value measurements
Probability rate		0
Maximum
Fair value measurements
Probability rate		0.15
Level 2 | Marketable securities
Fair value measurements
Short-term investments	11,800
Long-term investments	3,400
Other accrued expenses
Fair value measurements
Contingent consideration liability	4,300	$ 4,200
Recurring
Fair value measurements
Assets	29,511	38,501
Liabilities	4,293	4,225
Recurring | Money market funds
Fair value measurements
Money market funds	14,342	22,992
Recurring | Marketable securities
Fair value measurements
Marketable securities	15,169	15,509
Recurring | Level 1
Fair value measurements
Assets	14,342	22,992
Recurring | Level 1 | Money market funds
Fair value measurements
Money market funds	14,342	22,992
Recurring | Level 2
Fair value measurements
Assets	15,169	15,509
Recurring | Level 2 | Marketable securities
Fair value measurements
Marketable securities	15,169	15,509
Recurring | Level 3
Fair value measurements
Liabilities	$ 4,293	$ 4,225

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