AMK Welding, Inc. ("AMK") to Meyer Tool, Inc., ("Meyer") in 2017, Meyer was obligated to pay the Company within 30 days after the end of each calendar quarter, commencing April 1, 2017, an amount equal to five (5%) percent of the net sales of AMK for that quarter until the aggregate payments made to the Company (the "Meyer Agreement") equals$1,500,000 (the "Maximum Amount").

The Company entered into a ?Purchase Agreement? with 15 accredited investors (the ?Purchasers?), including Michael and Robert Taglich, pursuant to which the Company assigned to the Purchasers all of their rights, title and interest to the remaining $1,137,000 of the $1,500,000 in payments due from Meyer for the sale of AMK (the ?Remaining Amount?) for an immediate payment of $800,000, including $100,000 from each of Michael and Robert Taglich, and $75,000 for the benefit of the children of Michael Taglich. The timing of the payments is based upon the net sales of AMK. If the Purchasers have not received the entire Remaining Amount by March 31, 2023, they have the right to demand payment of their pro rata portion of the unpaid Remaining Amount from the Company (?Put Right?).

Proceeds as liability amount

$ 800,000

Annual interest rate percentage

18.00%

Non-cash interest expense recognized

$ 33,000

Liability Related to the Sale of Future Proceeds from Disposition of Subsidiary (Details Textual) - USD ($)		3 Months Ended		12 Months Ended
	Jan. 15, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Liability Related to the Sale of Future Proceeds from Disposition of Subsidiary (Textual)
Sale of subsidiary, description		AMK Welding, Inc. ("AMK") to Meyer Tool, Inc., ("Meyer") in 2017, Meyer was obligated to pay the Company within 30 days after the end of each calendar quarter, commencing April 1, 2017, an amount equal to five (5%) percent of the net sales of AMK for that quarter until the aggregate payments made to the Company (the "Meyer Agreement") equals$1,500,000 (the "Maximum Amount").
Aggregate of amount received				$ 363,000
Purchase agreement, description	The Company entered into a ?Purchase Agreement? with 15 accredited investors (the ?Purchasers?), including Michael and Robert Taglich, pursuant to which the Company assigned to the Purchasers all of their rights, title and interest to the remaining $1,137,000 of the $1,500,000 in payments due from Meyer for the sale of AMK (the ?Remaining Amount?) for an immediate payment of $800,000, including $100,000 from each of Michael and Robert Taglich, and $75,000 for the benefit of the children of Michael Taglich. The timing of the payments is based upon the net sales of AMK. If the Purchasers have not received the entire Remaining Amount by March 31, 2023, they have the right to demand payment of their pro rata portion of the unpaid Remaining Amount from the Company (?Put Right?).
Purchase price per annum		2.00%
Proceeds as liability amount		$ 800,000
Net of transaction costs		$ (3,000)
Annual interest rate percentage		18.00%
Non-cash other income recognized		$ (109,000)
Non-cash interest expense recognized		$ 33,000