Indebtedness - Additional Information (Details)		6 Months Ended
	Jun. 27, 2023 USD ($)	Jun. 30, 2023 USD ($) item	Jun. 30, 2022 USD ($)	Jun. 28, 2023 USD ($)	Mar. 31, 2023 USD ($)	Mar. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jul. 09, 2021 USD ($)	Jun. 28, 2018 USD ($)
Debt Instrument
Principal payments on long-term debt			$ 4,250,000
Cash and Cash Equivalents, at Carrying Value		$ 716,000					$ 3,812,000
Outstanding balance		3,697,000					501,000
Total shareholders' equity		24,164,000	$ 34,992,000		$ 33,619,000		35,113,000	$ 35,738,000	$ 35,366,000
Revolving credit facility
Debt Instrument
Maximum availability	$ 7,000,000
Percentage of fixed interest rate payable	7.00%
Spread on variable rate	1.00%
Loan origination costs capitalized	$ 104,000
Term of agreement	3 years
Term of invoices unpaid defined as ineligible receivables	90 days
Balance outstanding		3,697,000					0
Loan payoff with a financial institution				$ 3,638,000
Closing fees		59,000
Pledged deposit returned to the Company		320,000
Pledged deposit		$ 180,000				$ 500,000
Number of financial covenants | item		2
Minimum tangible net worth		$ 20,000,000
Minimum working capital		10,000,000
Revolving credit facility | ATG
Debt Instrument
Borrowing base as percentage of eligible domestic and international accounts receivable balances	85.00%
Line of credit (LOC)
Debt Instrument
Outstanding balance		3,697,000					0
Equipment note obligations; Interest rate fixed for term of each funding based upon the Lender's lease pricing at time of funding. (Interest rate/factor factor 1.79553% - 1.869304% at time of funding)
Debt Instrument
Outstanding balance		$ 0					491,000
Loan line of credit										$ 1,000,000
Term of agreement		60 months
Equipment note obligations; Interest rate fixed for term of each funding based upon the Lender's lease pricing at time of funding. (Interest rate/factor factor 1.79553% - 1.869304% at time of funding) | Maximum
Debt Instrument
Percentage of floating interest rate payable		1.8693%
Equipment note obligations; Interest rate fixed for term of each funding based upon the Lender's lease pricing at time of funding. (Interest rate/factor factor 1.79553% - 1.869304% at time of funding) | Minimum
Debt Instrument
Percentage of floating interest rate payable		1.79553%
Equipment financing lease obligations; Interest rate fixed for term of each funding based upon the Lender's lease pricing at time of funding. (Interest rate/factor 1.822758% - 1.869304% at time of funding)
Debt Instrument
Outstanding balance		$ 0					$ 10,000
Lease line of credit											$ 1,000,000
Term of agreement		60 months
Equipment financing lease obligations; Interest rate fixed for term of each funding based upon the Lender's lease pricing at time of funding. (Interest rate/factor 1.822758% - 1.869304% at time of funding) | Maximum
Debt Instrument
Percentage of floating interest rate payable		1.8693%
Equipment financing lease obligations; Interest rate fixed for term of each funding based upon the Lender's lease pricing at time of funding. (Interest rate/factor 1.822758% - 1.869304% at time of funding) | Minimum
Debt Instrument
Percentage of floating interest rate payable		1.82276%