Summary of significant accounting policies (Details) - USD ($) $ in Thousands |
9 Months Ended | ||
|---|---|---|---|
Aug. 04, 2015 |
Sep. 30, 2015 |
Aug. 03, 2015 |
|
| Principles of consolidation | |||
| Reduction to additional paid-in capital resulting from purchase of remaining noncontrolling interest | $ 1,150 | ||
| Concourse Communications Detroit, LLC | |||
| Principles of consolidation | |||
| Percentage of additional ownership in Subsidiary acquired | 30.00% | ||
| Total purchase price | $ 1,150 | ||
| Reduction to additional paid-in capital resulting from purchase of remaining noncontrolling interest | $ 1,150 | ||
| Chicago Concourse Development Group, LLC | |||
| Principles of consolidation | |||
| Percentage of ownership in subsidiaries | 70.00% | ||
| Boingo Holding Participacoes Ltda. | |||
| Principles of consolidation | |||
| Percentage of ownership in subsidiaries | 75.00% | ||
| Concourse Communications Detroit, LLC | |||
| Principles of consolidation | |||
| Percentage of ownership in subsidiaries | 70.00% |