Note 3 - Variable Interest Entities (Details) - Carrying Amounts and Classification of Assets and Liabilities of Shield Stations (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current assets
Cash and cash equivalents	$ 43,920	$ 71,618	$ 24,244	$ 55,559
Trade accounts receivable, net	265,169	110,283
Prepaid expenses and other current assets	39,798	13,889
Total current assets	524,544	203,296
Property and equipment, net	495,379	285,467
Other assets, net	79,000	35,477
Definite lived intangible assets, net	911,860	239,642
Goodwill	1,608,191	541,475
Total assets	4,742,774	1,921,368
Current liabilities
Other accrued expenses and other current liabilities	102,692	42,656
Current installments of long-term debt	11,781	11,217
Total current liabilities	188,281	79,992
Long-term debt	2,400,162	905,783
Total liabilities	3,209,145	1,186,131
Shield Stations [Member]
Current assets
Cash and cash equivalents	3,846	4,110
Trade accounts receivable, net	10,336	3,831
Prepaid expenses and other current assets	1,156	671
Total current assets	15,338	8,612
Property and equipment, net	3,244	2,996
Other assets, net	2,011	697
Definite lived intangible assets, net	20,152	3,400
Broadcast licenses	84,300	22,400
Goodwill	50,855	2,730
Total assets	175,900	40,835
Current liabilities
Trade accounts payable	56
Other accrued expenses and other current liabilities	6,839	2,180
Current installments of long-term debt	3,562	2,400
Total current liabilities	10,457	4,580
Long-term debt	28,150	29,600
Other liabilities	3,914	8,399
Total liabilities	$ 42,521	$ 42,579