Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Allowance for losses on notes	$ 2,189	$ 2,674
Basis difference in fixed assets	705	1,426
Deferred gain	275	5,168
Foreign currency translations	1,088	3,818
Net operating loss carryforward	25,993	15,234
Total deferred tax assets	30,250	28,320
Less: valuation allowance	(30,250)	(28,320)
Total net deferred tax assets	$ 0	$ 0