v2.4.0.8
Business Segments and Major Customers - Summary of Reportable Segments (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Segment Reporting Information [Line Items]                      
Service revenue                 $ 250,381 $ 167,067 $ 103,918
Equipment revenue                 77,743 66,448 56,238
Total revenue 92,554 85,379 79,437 70,754 63,523 57,840 57,879 54,273 328,124 233,515 160,156
Segment profit (loss)                 8,389 9,344 (812)
CA-NA [Member]
                     
Segment Reporting Information [Line Items]                      
Service revenue                 196,732 132,607 83,421
Equipment revenue                 2,336 1,833 2,539
Total revenue                 199,068 134,440 85,960
Segment profit (loss)                 (1,328) (12,211) (25,820)
CA-ROW [Member]
                     
Segment Reporting Information [Line Items]                      
Service revenue                 1,392    
Equipment revenue                 168 670  
Total revenue                 1,560 670  
Segment profit (loss)                 (41,004) (14,261)  
BA [Member]
                     
Segment Reporting Information [Line Items]                      
Service revenue                 52,257 34,460  
Equipment revenue                 75,239 63,945 53,699
Total revenue                 127,496 98,405  
Segment profit (loss)                 $ 50,721 $ 35,816 $ 25,008