Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities
Net loss	$ (3,759,000)	$ (2,920,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Right-of-use assets non-cash expense	772,000
Deferred income taxes	(19,000)	(23,000)
Depreciation of property and equipment	420,000	463,000
Stock-based compensation	1,395,000	1,025,000
Amortization of intangible assets	634,000	550,000
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	1,420,000	(2,536,000)
Unbilled accounts receivable and deferred revenue, net	(949,000)	(1,041,000)
Inventories	374,000	(481,000)
Prepaid expenses and other assets	(942,000)	330,000
Accounts payable, accrued expenses, and other liabilities	491,000	(646,000)
Net cash used in operating activities	(163,000)	(5,279,000)
Cash flows from investing activities
Purchases of property and equipment	(276,000)	(392,000)
Purchases of investments	(21,251,000)	(4,079,000)
Maturities of investments	3,175,000	2,988,000
Capitalized software development costs	(522,000)	(211,000)
Cash paid in business acquisition, net of cash acquired	(5,581,000)
Net proceeds from sale of discontinued operation		107,000
Net cash used in investing activities	(24,455,000)	(1,587,000)
Cash flows from financing activities
Proceeds from stock option exercises	81,000	51,000
Proceeds from ESPP purchases	172,000	165,000
Tax withholding payments for net share settlements of restricted stock units		(4,000)
Proceeds from issuance of common stock, net of costs	26,751,000
Net cash provided by financing activities	27,004,000	212,000
Increase (decrease) in cash and cash equivalents	2,386,000	(6,654,000)
Cash and cash equivalents at beginning of period	7,071,000	10,152,000
Cash and cash equivalents at end of period	9,457,000	3,498,000
Supplemental cash flow information:
Cash paid during the period for: Income taxes	54,000	$ 62,000
Supplemental schedule of non-cash investing and financing activities:
Lease liabilities arising from obtaining right-of-use assets	95,000
Issuance of common stock in connection with acquisition	$ 4,535,000