v3.20.4

Summary of significant accounting policies - Basis of presentation and consolidation (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 01, 2019 | Jan. 01, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Adoption of ASC 606 |  |  |  |  |
Accumulated deficit |  |  | $ (158,066) | $ (140,973) |
Accounts receivable, net |  | $ 25,079 | 27,716 | 33,350 |
Prepaid expenses and other current assets |  | 6,539 | 8,388 | 8,235 |
Other assets |  | 7,903 | 11,264 | 9,309 |
Deferred revenue, current |  | 75,884 | 65,292 | 61,229 |
Deferred revenue, net of current portion |  | 128,588 | 159,462 | 166,660 |
Non-controlling interests |  |  | 394 | 1,238 |
Revenue |  |  | 237,416 | 263,790 | $ 250,821
Non-controlling interests |  |  | (647) | 19 | $ 1,489
Lease, Practical Expedients, Package [true false] | true |  |  |  |
Adoption of ASC 842 |  |  |  |  |
Operating lease right-of-use assets |  |  | 12,876 | $ 15,196 |
Operating lease right-of-use liabilities |  |  | $ 17,119 |  |
Adjustment for adoption |  |  |  |  |
Adoption of ASC 606 |  |  |  |  |
Accounts receivable, net |  | (1,069) |  |  |
Prepaid expenses and other current assets |  | 170 |  |  |
Other assets |  | (2,179) |  |  |
Deferred revenue, current |  | 14,176 |  |  |
Deferred revenue, net of current portion |  | (20,580) |  |  |
ASC 842 |  |  |  |  |
Adoption of ASC 842 |  |  |  |  |
Operating lease right-of-use assets | $ 16,916 |  |  |  |
Operating lease right-of-use liabilities | $ 22,338 |  |  |  |
ASC 606 | As per ASC 605 |  |  |  |  |
Adoption of ASC 606 |  |  |  |  |
Accounts receivable, net |  | 26,148 |  |  |
Prepaid expenses and other current assets |  | 6,369 |  |  |
Other assets |  | 10,082 |  |  |
Deferred revenue, current |  | 61,708 |  |  |
Deferred revenue, net of current portion |  | 149,168 |  |  |
ASC 606 | Adjustment for adoption |  |  |  |  |
Adoption of ASC 606 |  |  |  |  |
Accumulated deficit |  | 3,257 |  |  |
Non-controlling interests |  | $ 69 |  |  |
Chicago Concourse Development Group, LLC |  |  |  |  |
Basis of presentation and consolidation |  |  |  |  |
Percentage of ownership in subsidiaries |  |  | 70.00% |  |
Boingo Holding Participacoes Ltda. |  |  |  |  |
Basis of presentation and consolidation |  |  |  |  |
Percentage of ownership in subsidiaries |  |  | 75.00% |  |

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