Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Effective tax rate of provision for income taxes difference from federal statutory rate
Income tax expense	$ 0	$ 1,305,000	$ (691,000)
Effective income tax rate (as a percent)		(2.00%)	0.90%
Federal statutory income tax rate (as a percent)	21.00%	21.00%	21.00%
Australian Taxation Office
Effective tax rate of provision for income taxes difference from federal statutory rate
Foreign income tax benefit	$ 0