Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities
Net loss	$ (5,610,000)	$ (7,816,000)	$ (3,526,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Right-of-use asset non-cash expense	1,772,000
Deferred income taxes	105,000	(18,000)	(660,000)
Depreciation of property and equipment	848,000	854,000	819,000
Stock-based compensation	2,785,000	2,156,000	1,781,000
Amortization of intangible assets	1,492,000	1,125,000	726,000
Gain on sale of discontinued operation, net of tax			(242,000)
Loss on disposal of equipment			16,000
Other	(60,000)
Changes in operating assets and liabilities, net of effects of discontinued operation and acquisition:
Trade accounts receivable	265,000	(4,063,000)	1,433,000
Unbilled accounts receivable and deferred revenue	(2,438,000)	457,000	(166,000)
Inventories	(124,000)	5,000	(671,000)
Prepaid expenses and other assets	(987,000)	902,000	(693,000)
Trade accounts payable and accrued expenses	(534,000)	570,000	915,000
Operating lease liabilities	(1,341,000)
Net cash used in operating activities	(3,827,000)	(5,828,000)	(268,000)
Cash flows from investing activities
Purchases of property and equipment	(468,000)	(486,000)	(1,079,000)
Purchase of short term investments	(33,786,000)	(4,079,000)	(5,319,000)
Maturities of investments	24,225,000	7,463,000
Capitalized software development costs	(633,000)	(660,000)	(2,936,000)
Cash paid in business acquisition, net of cash acquired	(5,581,000)
Net proceeds from sale of business segment		107,000	511,000
Net cash (used in) provided by investing activities	(16,243,000)	2,345,000	(8,823,000)
Cash flows from financing activities
Proceeds from stock option exercises	256,000	85,000	1,190,000
Proceeds from ESPP purchases	370,000	365,000
Tax withholding payments for net share settlements of restricted stock unit	(15,000)	(48,000)	(148,000)
Proceeds from issuance of common stock, net of costs	26,751,000
Net cash provided by financing activities	27,362,000	402,000	1,042,000
Increase (decrease) in cash, cash equivalents and restricted cash	7,292,000	(3,081,000)	(8,049,000)
Cash, cash equivalents and restricted cash at beginning of period	7,071,000	10,152,000	18,201,000
Cash, cash equivalents and restricted cash at end of period	14,363,000	7,071,000	10,152,000
Supplemental cash flow information:
Income taxes	63,000	4,000	130,000
Supplemental schedule of non-cash investing and financing activities:
Issuance of common stock for vested restricted stock units	7,000	$ 6,000	10,000
Issuance of common stock in connection with acquisition	4,535,000
Lease liabilities arising from obtaining right-of-use assets	$ 581,000
Capitalized software development costs included in accounts payable and accrued expenses			102,000
Landlord contribution for tenant improvements			$ 145,000