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Note 9 - Notes Payable (Details Textual) - USD ($)			6 Months Ended
Note 9 - Notes Payable (Details Textual) - USD ($)	Jul. 05, 2018	Jul. 01, 2018	Jun. 30, 2021	Jun. 30, 2020	Jan. 15, 2021	Jan. 14, 2021	Dec. 31, 2020	Jun. 04, 2020	Apr. 10, 2020	Jul. 01, 2016
Payments to Acquire Businesses, Gross			$ 7,089,381	$ 9,400,000
CAD Enterprises, Inc. [Member]
Business Combination, Consideration Transferred, Total		$ 21,000,000
Payments to Acquire Businesses, Gross		$ 12,000,000
Notes Payable [Member]
Notes Payable, Total			8,679,828				$ 9,692,033
Seller Note [Member] \| CAD Enterprises, Inc. [Member]
Debt Instrument, Interest Rate, Stated Percentage		4.00%
Seller Note [Member] \| Notes Payable [Member]
Debt Instrument, Face Amount			9,000,000				9,000,000
Notes Payable, Total			5,062,500				6,187,500
Paycheck Protection Program CARES Act [Member] \| Notes Payable [Member]
Debt Instrument, Face Amount									$ 3,679,383
Paycheck Protection Program CARES Act [Member] \| Notes Payable [Member] \| Federal Hose [Member]
Debt Instrument, Face Amount							253,071	$ 253,071
Notes Payable, Total			0				253,071
Paycheck Protection Program CARES Act [Member] \| Notes Payable [Member] \| CAD Enterprises, Inc. [Member]
Debt Instrument, Face Amount							1,200,766	$ 1,200,766
Notes Payable, Total			0				1,200,766
First Francis [Member] \| Related Party Notes, One [Member] \| Notes Payable [Member]
Debt Instrument, Face Amount							2,000,000			$ 2,000,000
Notes Payable, Total			0				1,108,829
First Francis [Member] \| Related Party Notes, Two [Member] \| Notes Payable [Member]
Debt Instrument, Face Amount							2,768,662			$ 2,768,662
Notes Payable, Total			0				941,867
First Francis [Member] \| Related Party Notes [Member] \| Notes Payable [Member]
Debt Instrument, Interest Rate, Stated Percentage	6.25%
Line of Credit Facility, Interest Rate During Period	4.00%
Notes Payable, Total						$ 2,077,384
First Francis [Member] \| Related Party Notes [Member] \| Notes Payable [Member] \| Komtek Forge [Member]
Notes Payable, Total						$ 1,702,400
First Francis [Member] \| Related Party Notes Three [Member] \| Notes Payable [Member]
Debt Instrument, Face Amount			3,779,784
Debt Instrument, Interest Rate, Stated Percentage					6.25%
Notes Payable, Total			$ 3,617,328		$ 3,779,784		$ 0