Note H - Earnings Per Share - Schedule of Earnings Per Share Basic and Diluted (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net loss attributable to MIC	$ (2,436,000)	$ (2,855,000)	$ (4,992,000)	$ (7,973,000)
Net loss attributable to participating securities	$ 0	$ 0	$ 0	$ 0
Basic and dilutive weighted average shares of Common Stock outstanding (in shares)	7,762,375	7,739,952	7,762,375	7,735,888
Diluted share equivalents outstanding (in shares)	0	0	0	0
Dilutive weighted average shares of Common Stock outstanding (in shares)	7,762,375	7,739,952	7,762,375	7,735,888
Basic and dilutive (in dollars per share)	$ (0.31)	$ (0.37)	$ (0.64)	$ (1.03)