Note 5 - Prepayments and Deposit to Suppliers - Prepayments and Deposit to Suppliers (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Prepayment and deposit to suppliers *	$ 7,559	$ 4,657
Deposits to TV Ad and Internet Ad Resources Providers [Member]
Prepayment and deposit to suppliers *	934	307
Prepayment to TV Ad and Internet Ad Resources Providers [Member]
Prepayment and deposit to suppliers *	5,185	3,696
Deposits and Prepayments for Other Investing Contracts [Member]
Prepayment and deposit to suppliers *	1,000	0
Other Deposits and Prepayments [Member]
Prepayment and deposit to suppliers *	$ 440	$ 654