Note 1 - Trader Barter Revenue and Expense Recognized (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Advertising Barter Transactions [Member]
Trade revenue	$ 2,299,000	$ 2,174,000	$ 1,390,000
Trade expense	(2,188,000)	(2,287,000)	(1,262,000)
Net trade income (loss)	111,000	(113,000)	128,000
Net trade income (loss)	$ 39,301,000	$ 48,061,000	$ 18,288,000