Note 7 - Other Current Assets, Net - Summary of Other Current Assets, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Total, gross	$ 1,808	$ 1,784
Total allowance for doubtful accounts	(1,799)	(1,765)
Other current assets, net	9	19
Short-term Working Capital Loan to an Unrelated Third Party [Member]
Other receivables, gross	149	146
Allowance for doubtful accounts receivable	(149)	(146)
Other receivables, net
TV Advertisement Deposit and Prepayment [Member]
Other receivables, gross	9	19
Allowance for doubtful accounts receivable
Other receivables, net	9	19
Overdue Deposits [Member]
Other receivables, gross	1,650	1,619
Allowance for doubtful accounts receivable	(1,650)	(1,619)
Other receivables, net