Note B - Summary of Significant Accounting Policies - Property, Plant and Equipment (Details)	12 Months Ended
	Dec. 31, 2019
Land Improvements [Member]
Useful lives (Year)	10 years
Vehicles [Member]
Useful lives (Year)	5 years
Minimum [Member] | Building [Member]
Useful lives (Year)	20 years
Minimum [Member] | Machinery and Equipment [Member]
Useful lives (Year)	2 years
Minimum [Member] | Furniture and Fixtures [Member]
Useful lives (Year)	3 years
Minimum [Member] | Computer Equipment and Software [Member]
Useful lives (Year)	3 years
Maximum [Member] | Building [Member]
Useful lives (Year)	42 years
Maximum [Member] | Machinery and Equipment [Member]
Useful lives (Year)	20 years
Maximum [Member] | Furniture and Fixtures [Member]
Useful lives (Year)	7 years
Maximum [Member] | Computer Equipment and Software [Member]
Useful lives (Year)	10 years