Income Taxes - Deferred Tax Asset/Liability (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred Tax Asset
Net operating loss available for carry-back and carry-forward (1)	$ 20,637	$ 21,402
Net capital loss carry-forward (1)	11,072	11,966
Investments	1,972	9,061
Deferred tax asset	33,681	42,429
Allowance	(33,681)	(42,429)
Net deferred tax asset	0	0
Deferred Tax Liability
Net operating loss available for carry-back and carry-forward	0	85
Net deferred tax liability	$ 0	$ 85