Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,877,000	$ 1,121,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	1,202,000	1,340,000
Gain from extinguishment of debt – PPP loan	0	(1,389,000)
Amortization of debt issue costs and other assets	45,000	73,000
Amortization of operating leases right-of-use assets	232,000	236,000
Share-based compensation expense	318,000	196,000
Provision for doubtful accounts	124,000	31,000
Net (increase) decrease in assets:
Accounts receivable	(2,214,000)	441,000
Inventories	(309,000)	64,000
Prepaid expenses and other assets	180,000	78,000
Net increase (decrease) in liabilities:
Accounts payable	(269,000)	(665,000)
Accrued expenses	447,000	(140,000)
Customer deposits	(41,000)	(211,000)
Operating lease obligations	(236,000)	(236,000)
Deferred rent and other liabilities	(12,000)	(20,000)
Net cash provided by operating activities	1,344,000	919,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in equipment and leasehold improvements	(745,000)	(583,000)
Net cash used in investing activities	(745,000)	(583,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on short-term contract obligation	0	(38,000)
Net payments on line of credit	(1,000,000)	(250,000)
Net payments on debt – related party	(500,000)	0
Proceeds from long-term debt – PPP loan	0	1,381,000
Principal payments on long-term debt	(529,000)	(498,000)
Payments on finance leases	0	(20,000)
Taxes paid related to net share settlement of restricted stock units	(39,000)	(6,000)
Net cash (used in) provided by financing activities	(2,068,000)	569,000
Net (decrease) increase in cash	(1,469,000)	905,000
Cash at beginning of period	3,767,000	2,417,000
Cash at end of period	2,298,000	3,322,000
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Interest	268,000	344,000
Income taxes	$ 2,000	$ 14,000