17. Convertible Bonds (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Total convertible bonds	$ 0	$ 13,400
Convertible Bonds [Member]
Convertible bonds, current	55,907	41,600
Convertible bonds, noncurrent	0	13,400
Total convertible bonds	55,907	55,000
Convertible Bonds [Member] \| Brilliant King Group Limited [Member]
Convertible bonds, current	12,000	12,000
Convertible Bonds [Member] \| Poseidon Sports Limited [Member]
Convertible bonds, current	3,000	3,000
Convertible Bonds [Member] \| Magical Glaze Limited [Member]
Convertible bonds, current	20,000	6,600
Convertible bonds, noncurrent	0	13,400
Convertible Bonds [Member] \| Vision Edge Limited [Member]
Convertible bonds, current	20,000	20,000
Convertible Bonds [Member] \| Iliad Research and Trading, L.P. [Member]
Convertible bonds, current	$ 907	$ 0

Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

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