|
Composition of Certain Balance Sheet Accounts - Property and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | $ 390,380 | $ 282,943 |
| Accumulated depreciation | (124,746) | (85,269) |
| Property and equipment, net | 265,634 | 197,674 |
|
Office equipment, furniture, and fixtures [Member]
|
||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 19,695 | 15,895 |
|
Leasehold improvements [Member]
|
||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 7,747 | 7,152 |
|
Airborne equipment [Member]
|
||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 227,866 | 163,896 |
|
Network equipment [Member]
|
||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 135,072 | 96,000 |
| Property and equipment, net | $ 3,600 |