CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities:
Net (loss)	$ (3,026)	$ (2,851)
Adjustments to reconcile net loss to net cash (used) by operating activities:
Amortization of right-of-use assets	171	36
Depreciation and amortization	2	1
Deferred tax assets		11
Asset allowances and reserves	13	18
Changes in assets and liabilities:
Accounts receivable	(994)	(276)
Inventory	42	933
Prepaid purchases	(259)	328
Prepaid expenses and other current assets	(57)	8
Other assets		60
Accounts payable and other current liabilities	336	266
Short term lease liabilities	(50)
Long term lease liabilities	(130)
Due to affiliate	1
Income taxes payable	(197)	(195)
Deferred revenue	80	(165)
Net cash (used) by operating activities	(4,068)	(1,826)
Cash Flows From Investing Activities:
Proceeds from sale of short-term investments	28,101	1,850
Purchases of short-term investments		(1,443)
Net cash provided by investing activities	28,101	407
Cash Flows from Financing Activities:
Proceeds from Paycheck Protection Program loan	204
Net cash provided by financing activities	204
Net increase (decrease) in cash and cash equivalents	24,237	(1,419)
Cash and cash equivalents at beginning of the year	6,276	7,917
Cash and cash equivalents at end of the year	30,513	6,498
Cash paid for:
Interest	6
Income taxes	$ 197	$ 199