Note 5 - Accounts receivable, net (Details) (USD $)	3 Months Ended	9 Months Ended			3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013 Internet Advertising And TV Advertising [Member]	Sep. 30, 2013 Internet Advertising And TV Advertising [Member]	Sep. 30, 2012 Internet Advertising And TV Advertising [Member]
Note 5 - Accounts receivable, net (Details) [Line Items]
Allowance for Doubtful Accounts Receivable, Current		$ 3,963,000		$ 3,630,000	$ 3,963,000	$ 3,963,000
Number of Months Past Due						6 months
Provision for Doubtful Accounts	$ 211,000	$ 1,024,000	$ 561,000		$ 233,000	$ 233,000	$ 350,000