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Note 3 - Revenues by Product Line (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Data [Member]    
Revenues $ 83,439 $ 69,056
Video [Member]    
Revenues 74,853 87,917
Voice [Member]    
Revenues 11,314 14,565
Commercial [Member]    
Revenues 23,827 21,160
Advertising sales 7,003 7,573
Other 2,369 2,638
Total revenues $ 202,805 $ 202,909