v3.10.0.1
Summary of significant accounting policies - Revenue disaggregated by product offerings (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
segment
Jun. 30, 2017
USD ($)
Primary revenue source        
Number of reportable segments | segment     1  
Revenue $ 59,601 $ 49,033 $ 117,760 $ 93,366
DAS        
Primary revenue source        
Revenue 21,885 18,552 45,530 34,808
Military        
Primary revenue source        
Revenue 16,735 13,542 32,589 26,083
Wholesale-Wi-Fi        
Primary revenue source        
Revenue 13,530 7,300 24,679 14,131
Retail        
Primary revenue source        
Revenue 4,566 6,358 9,876 12,773
Advertising and other        
Primary revenue source        
Revenue $ 2,885 $ 3,281 $ 5,086 $ 5,571