Income Taxes - Components of the Company's Deferred Tax (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S. NOL	$ 46,693	$ 23,585
Foreign NOL	6,554	5,967
U.S. capital loss carryover	873	4,371
U. S. Section 1231 carryover	2,360
Accrued payroll and expense	1,012	0
Nonqualified options	2,999	1,927
Convertible notes	0	827
Inventory reserve	563	0
Bad debt allowance	281	281
Impaired assets	10,728	7,996
Equity investment loss and others	126
Equity investment loss and others	5,081	3,596
Total deferred tax assets	77,270	48,550
Less: valuation allowance	(74,972)	(46,732)	$ (30,275)	$ (15,468)
Property and equipment	(357)	(81)
Intangible assets	(5,954)	(6,782)
Outside basis in domestic subsidiary and other	(1,060)	0
Total deferred tax liabilities	(7,371)	(6,863)
Net deferred tax assets (liabilities)	$ (5,073)	$ (5,045)