INCOME TAXES: - Reconciliation of deferred tax assets/liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020
Deferred tax assets:
Accrued expenses	$ 3,501	$ 3,978
Deferred revenue	11	16
Lease liabilities	3,324	4,939
Net operating loss carryforwards	35,945	33,516
Stock-based compensation	2,991	8,076
Nonqualified deferred compensation	2,802	2,815
Tax credit carryforwards	7,818	1,240
Other	2,856	2,778
Total deferred tax assets	59,248	57,358
Less valuation allowance	(35,332)	(32,971)
Net deferred tax assets	23,916	24,387
Deferred tax liabilities:
Prepaid expenses	(6,734)	(2,239)
Property and equipment	(248)	(1,742)
Right-of-use assets	(3,016)	(4,147)
Intangible assets	(8,409)	(9,605)
Deferred commissions	(5,391)	(3,817)
Accrued expenses	0	(2,189)
Total deferred tax liabilities	(23,798)	(23,739)
Net deferred tax assets	$ 118	$ 648