| Summary of intangible assets | 
        
Intangible assets consisted of the following: 
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   | 
   | 
   | 
March 31, 2012  | 
   | 
December 31, 2011  | 
 
   | 
 Weighted Average 
Useful Lives 
 | 
   | 
 Gross 
Carrying 
Value 
 | 
   | 
 Accumulated 
Amortization 
 | 
   | 
 Net Carrying 
Value 
 | 
   | 
 Gross 
Carrying 
Value 
 | 
   | 
 Accumulated 
Amortization 
 | 
   | 
 Net Carrying 
Value 
 | 
 
Indefinite life intangible assets:  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
FCC licenses  | 
Indefinite  | 
 
  | 
   | 
$  | 
2,083,654  | 
 
  | 
   | 
$  | 
—  | 
 
  | 
   | 
$  | 
2,083,654  | 
 
  | 
   | 
$  | 
2,083,654  | 
 
  | 
    | 
$  | 
—  | 
 
  | 
   | 
$  | 
2,083,654  | 
 
  | 
 
Trademark  | 
Indefinite  | 
 
  | 
   | 
250,000  | 
 
  | 
   | 
—  | 
 
  | 
   | 
250,000  | 
 
  | 
   | 
250,000  | 
 
  | 
    | 
—  | 
 
  | 
   | 
250,000  | 
 
  | 
 
Definite life intangible assets:  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
Subscriber relationships  | 
9  | 
 years  | 
   | 
380,000  | 
 
  | 
   | 
(202,134  | 
)  | 
   | 
177,866  | 
 
  | 
   | 
380,000  | 
 
  | 
    | 
(191,201  | 
)  | 
   | 
188,799  | 
 
  | 
 
Licensing agreements  | 
9.1  | 
 years  | 
   | 
78,897  | 
 
  | 
   | 
(36,649  | 
)  | 
   | 
42,248  | 
 
  | 
   | 
78,897  | 
 
  | 
    | 
(34,145  | 
)  | 
   | 
44,752  | 
 
  | 
 
Proprietary software  | 
6  | 
 years  | 
   | 
16,552  | 
 
  | 
   | 
(11,941  | 
)  | 
   | 
4,611  | 
 
  | 
   | 
16,552  | 
 
  | 
    | 
(11,507  | 
)  | 
   | 
5,045  | 
 
  | 
 
Developed technology  | 
10  | 
 years  | 
   | 
2,000  | 
 
  | 
   | 
(733  | 
)  | 
   | 
1,267  | 
 
  | 
   | 
2,000  | 
 
  | 
    | 
(683  | 
)  | 
   | 
1,317  | 
 
  | 
 
Leasehold interests  | 
7.4  | 
 years  | 
   | 
132  | 
 
  | 
   | 
(66  | 
)  | 
   | 
66  | 
 
  | 
   | 
132  | 
 
  | 
    | 
(61  | 
)  | 
   | 
71  | 
 
  | 
 
Total intangible assets  | 
   | 
   | 
$  | 
2,811,235  | 
 
  | 
   | 
$  | 
(251,523  | 
)  | 
   | 
$  | 
2,559,712  | 
 
  | 
   | 
$  | 
2,811,235  | 
 
  | 
    | 
$  | 
(237,597  | 
)  | 
   | 
$  | 
2,573,638  | 
 
  | 
 
  
 
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        | Expected amortization expense for each of the fiscal years | 
        
Expected amortization expense for the remaining period in 2012, each of the fiscal years 2013 through 2016 and for periods thereafter is as follows:
 
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Year ending December 31,  | 
    | 
Amount  | 
 
2012  | 
    | 
$  | 
39,739  | 
 
  | 
 
2013  | 
    | 
47,357  | 
 
  | 
 
2014  | 
    | 
38,879  | 
 
  | 
 
2015  | 
    | 
37,553  | 
 
  | 
 
2016  | 
    | 
31,959  | 
 
  | 
 
Thereafter  | 
    | 
30,571  | 
 
  | 
 
Total definite life intangibles assets, net  | 
    | 
$  | 
226,058  | 
 
  | 
 
  
 
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