|
Other Assets - Long Term (Narrative) (Details) (USD $)
|
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2012
entity
security
|
Dec. 31, 2011
security
|
|
| Number of carrier networks | 1 | |
| Fair value of equipment transferred | $ 2,200,000 | |
| Term of equipment transfer agreement | 10 years | |
| Cost-basis investments | $ 522,000 | $ 522,000 |
| Cost-basis investments, number of companies | 2 | 2 |
|
Maximum [Member]
|
||
| Percentage ownership in cost-basis investments | 20.00% |