Debt (Details Narrative)				1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jan. 02, 2019 USD ($) $ / shares shares	Sep. 30, 2021 USD ($) Integer	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)
Debt Instrument [Line Items]
Debt Instrument, covenant, tangible net worth		$ 4,000,000
Line of credit	$ 4,782,000	5,003,000			$ 4,782,000		$ 4,782,000
John H. Schwan [Member]
Debt Instrument [Line Items]
Notes payable - related party	1,200,000	1,200,000	$ 1,600,000		1,200,000		1,200,000
Debt conversion, amount			600,000
Loan decreased, amount			$ 1,000,000
Interest expense, related party					18,000	$ 17,000	36,000	$ 34,000
John H. Schwan [Member] | Common Stock [Member]
Debt Instrument [Line Items]
Debt conversion, shares | shares			181,000
Share Price (in dollars per share) | $ / shares			$ 3.32
Alex Feng [Member]
Debt Instrument [Line Items]
Notes payable	$ 200,000	200,000			$ 200,000		$ 200,000
Interest rate	3.00%				3.00%		3.00%
Loan description							In accordance with the subordination agreement, payments may be made beginning April 2022 subject to availability under the revolving line of credit, and the maturity date for this loan is March 2024.
Maximum [Member]
Debt Instrument [Line Items]
Line of credit	$ 6,000,000.0				$ 6,000,000.0		$ 6,000,000.0
Capital expenditures amount				$ 1,000,000
Term Loan [Member]
Debt Instrument [Line Items]
Loan amount	500,000	600,000			500,000		500,000
Loan and interest payable	600,000	700,000			600,000		600,000
Deferred financing costs	100,000	100,000			100,000		100,000
Promissory Note [Member] | John H. Schwan [Member]
Debt Instrument [Line Items]
Loan and interest payable	$ 1,200,000	$ 1,200,000			1,200,000		1,200,000
Interest expense, related party					$ 18,000	$ 17,000	$ 36,000	$ 34,000
PNC Agreements [Member] | PNC [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Debt face amount				$ 6,000,000
Line Financial Agreement [Member]
Debt Instrument [Line Items]
Monthly installments | Integer				48
Debt instrument periodic payment				$ 15,000
Debt instrument collateral monitoring fee percent				4.62%
Debt instrument fee amount percent				1.25%
Debt term				1 year
Debt instrument renewal fee percent				1.25%
Line Financial Agreement [Member] | Prime Rate [Member]
Debt Instrument [Line Items]
Debt instrument reference rate	4.75%
Debt percentage per annum				1.95%
Line Financial Agreement [Member] | Line Financial [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Debt face amount				$ 700,000