Note 9 - Notes Payable - Notes Payable (Details) (Parentheticals) - Notes Payable [Member] - USD ($)	Jun. 04, 2020	Apr. 10, 2020	Jul. 01, 2016
Paycheck Protection Program CARES Act [Member]
Notes payable, face value		$ 3,679,383
Paycheck Protection Program CARES Act [Member] | Federal Hose [Member]
Notes payable, face value	$ 253,071
Paycheck Protection Program CARES Act [Member] | CAD Enterprises, Inc. [Member]
Notes payable, face value	$ 1,200,766
First Francis [Member] | Related Party Notes, One [Member]
Notes payable, face value			$ 2,000,000
First Francis [Member] | Related Party Notes, Two [Member]
Notes payable, face value			$ 2,768,662