Reportable segments (Details 4) - USD ($)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Investments
Total Investments	$ 6,579,984	$ 9,718,743
Telecommunications [Member]
Investments
Total Investments	0	0
Infrastructure [Member]
Investments
Total Investments	1,399,550	2,279,978
Non-operatingcorporate
Investments
Total Investments	$ 5,180,434	$ 7,438,765