Share-Based Payment Plans (Details) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2018
Non executive directors
Plan disclosures
Shares issued		3,766	2,190	5,821	4,695
Value of shares available for issuance for compensation related to annual fees	$ 50,000					$ 10,000
2017 Plan | Restricted Stock
Plan disclosures
Shares issued		0	0	64,962	35,056