Convertible Bonds (Details) - Convertible Bonds [Member] - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total convertible bonds, current	$ 48,603	$ 50,373
Brilliant King Group Limited [Member]
Debt Instrument [Line Items]
Total convertible bonds, current	12,000	12,000
Poseidon Sports Limited [Member]
Debt Instrument [Line Items]
Total convertible bonds, current	3,000	3,000
Magical Glaze Limited [Member]
Debt Instrument [Line Items]
Total convertible bonds, current	0	13,400
Vision Edge Limited [Member]
Debt Instrument [Line Items]
Total convertible bonds, current	20,000	20,000
Streeterville Capital L L C [Member]
Debt Instrument [Line Items]
Total convertible bonds, current	$ 13,603	$ 1,973