Quarterly report pursuant to Section 13 or 15(d)

Concentrations (Details)

v3.5.0.2
Concentrations (Details) - Customer Concentration Risk
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sales Revenue Segment    
Concentration Risk [Line Items]    
Southwest Airlines, concentration risk, percent 22.00% 24.00%
Sales Revenue Segment | Connectivity    
Concentration Risk [Line Items]    
Southwest Airlines, concentration risk, percent 63.00% 89.00%
Accounts Receivable    
Concentration Risk [Line Items]    
Southwest Airlines, concentration risk, percent 10.00%