Note 7 - Prepayments and Deposit to Suppliers - Prepayments and Deposit to Suppliers (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Prepayment and deposit to suppliers	$ 5,450	$ 4,754
Deposits to TV Ad and Internet Ad Resources Providers [Member]
Prepayment and deposit to suppliers	888	1,074
Prepayment to TV Ad and Internet Ad Resources Providers [Member]
Prepayment and deposit to suppliers	3,639	2,874
Deposits to Other Service Providers [Member]
Prepayment and deposit to suppliers	753	721
Other Deposits and Prepayments [Member]
Prepayment and deposit to suppliers	$ 170	$ 85