Stock Warrants - summary of all warrant activity (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Stock Warrants
Number of Warrants, Beginning balance	634,426	634,497
Number of Warrants, Granted	0	0
Number of Warrants, Exercised	0	0
Number of Warrants, Forfeited	0	(71)
Number of Warrants, Ending balance	634,426	634,426
Weighted Average Exercise Price, Beginning balance	$ 1.22	$ 1.24
Weighted Average Exercise Price, Granted	0	0
Weighted Average Exercise Price, Exercised	0	0
Weighted Average Exercise Price, Forfeited	0	182
Weighted Average Exercise Price, Ending balance	$ 1.22	$ 1.22