CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows related to operating activities:
Net Income	$ 1,727,000	$ 2,863,000
Adjustments to reconcile net income to net cash generated by operating activities:
Depreciation and amortization	714,000	718,000
Stock based compensation	56,000	172,000
Increase/(Decrease) in allowance doubtful accounts	9,000	(181,000)
(Decrease)/Increase in inventory reserve	(19,000)	132,000
Increase/(Decrease) in warranty reserve	10,000	(133,000)
Decrease in deferred income taxes	8,000
Change in assets and liabilities:
Accounts receivable	(272,000)	3,106,000
Other receivables - ERC	(999,000)
Inventories	2,118,000	(5,076,000)
Prepaid income taxes	285,000	583,000
Other current assets	(361,000)	(120,000)
Accounts payable	(264,000)	(715,000)
Accrued employee compensation and benefit costs	559,000	3,000
Post retirement obligations	49,000	198,000
Other accrued liabilities	246,000	(74,000)
Net cash generated by operating activities	3,866,000	1,476,000
Cash flows related to investing activities:
Capital expenditures - property, plant and equipment	(13,000)	(593,000)
Net cash used by investing activities	(13,000)	(593,000)
Cash flows related to financing activities:
Principal payments on long-term debt	(774,000)	(274,000)
Principal payments on equipment financing lease obligations	(177,000)	(148,000)
Proceeds from equipment note and equipment financing lease obligations	384,000
Proceeds from line of credit	500,000	750,000
Proceeds from paycheck protection program		4,000,000
Purchase of treasury shares	(81,000)	(100,000)
Net cash (used)/generated by financing activities	(148,000)	4,228,000
Net increase in cash	3,705,000	5,111,000
Cash at beginning of period	5,935,000	2,029,000
Cash at end of period	$ 9,640,000	$ 7,140,000