Business acquisition - Assets Acquired and Liabilities Assumed (Details) - USD ($)
shares in Thousands |
12 Months Ended |
|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Feb. 28, 2021 |
| Recognized amounts of identifiable assets acquired and liabilities assumed |
|
|
|
|
| Goodwill |
$ 56,142,000
|
$ 3,089,000
|
|
|
| Amortization of intangible assets |
1,933,000
|
0
|
$ 0
|
|
| Network Bridges Inc. |
|
|
|
|
| Business Combination, Consideration Transferred [Abstract] |
|
|
|
|
| Cash(1) |
53,350,000
|
3,150,000
|
|
|
| Number of ordinary shares issued |
|
$ 850,000
|
|
|
| Number of ordinary shares issued (in shares) |
|
85
|
|
|
| Recognized amounts of identifiable assets acquired and liabilities assumed |
|
|
|
|
| Cash and cash-equivalents |
1,331,000
|
$ 556,000
|
|
|
| Accounts receivable |
451,000
|
203,000
|
|
|
| Prepayments and other current assets |
704,000
|
24,000
|
|
|
| Contract asset |
705,000
|
|
|
|
| Fixed assets |
2,000
|
15,000
|
|
|
| Intangible assets, net |
8,155,000
|
213,000
|
|
|
| Operating lease right-of-use assets |
413,000
|
|
|
|
| Other non-current assets |
26,000
|
|
|
|
| Accounts payable |
(134,000)
|
|
|
|
| Advances from customers |
(6,710,000)
|
|
|
|
| Salary and welfare payable |
(2,863,000)
|
(31,000)
|
|
|
| Taxes payable and other accrued liabilities |
(200,000)
|
(16,000)
|
|
|
| Operating lease liabilities |
(363,000)
|
|
|
|
| Deferred tax liabilities(2) |
(1,219,000)
|
(53,200)
|
|
|
| Total identifiable net assets acquired |
298,000
|
911,000
|
|
|
| Goodwill |
53,052,000
|
3,089,000
|
|
|
| Total purchase consideration |
53,350,000
|
$ 4,000,000
|
|
|
| Deferred tax liability, period of recognition |
|
5 years
|
|
|
| Network Bridges Inc. | Developed Technology |
|
|
|
|
| Recognized amounts of identifiable assets acquired and liabilities assumed |
|
|
|
|
| Intangible assets, net |
|
$ 200,000
|
|
|
| Finite-lived intangible asset, useful life |
|
5 years
|
|
|
| Network Bridges Inc. | Developed Technology | General and Administrative Expense [Member] |
|
|
|
|
| Recognized amounts of identifiable assets acquired and liabilities assumed |
|
|
|
|
| Amortization of intangible assets |
42,600
|
$ 3,500
|
|
|
| Acquisition Of Easemob [Member] |
|
|
|
|
| Recognized amounts of identifiable assets acquired and liabilities assumed |
|
|
|
|
| Deferred tax liabilities(2) |
1,200,000
|
$ (53,000)
|
|
|
| Total purchase consideration |
|
|
|
$ 53,400,000
|
| Acquisition Of Easemob [Member] | Accrued Expenses And Other Liabilities Current [Member] |
|
|
|
|
| Recognized amounts of identifiable assets acquired and liabilities assumed |
|
|
|
|
| Business Combination, Contingent Consideration, Liability, Current |
4,600,000
|
|
|
|
| Acquisition Of Easemob [Member] | Developed Technology |
|
|
|
|
| Recognized amounts of identifiable assets acquired and liabilities assumed |
|
|
|
|
| Intangible assets, net |
$ 4,000,000.0
|
|
|
|
| Finite-lived intangible asset, useful life |
5 years
|
|
|
|
| Acquisition Of Easemob [Member] | Developed Technology | General and Administrative Expense [Member] |
|
|
|
|
| Recognized amounts of identifiable assets acquired and liabilities assumed |
|
|
|
|
| Amortization of intangible assets |
$ 700,000
|
|
|
|