Shareholders Equity - Common Shares (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Jul. 19, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Shareholders' Equity
Aggregate share capital, shares authorized		57,000,000.0
Common shares, shares authorized		32,000,000	32,000,000
Common shares, par value (in dollars per share)		$ 0.05	$ 0.05
Preferred shares, shares authorized		25,000,000.0
Preferred stock, par value (in dollars per share)		$ 0.001
Value of shares repurchased				$ 13,859
Treasury Stock, Common
Shareholders' Equity
Number of shares repurchased				34,000
Value of shares repurchased				$ 1,731
Treasury shares reissued during the year		0	0	0
Common Stock
Shareholders' Equity
Shares issued in connection with acquisition of certain development stage technologies in the energy transition space	147,974
Value of shares issued in connection with acquisition of certain development stage technologies in the energy transition space	$ 12,900
Number of shares which may be forfeited under certain conditions	71,280
Common shares issued upon conversion of warrants		1,100,000