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v3.22.1

Certain risks and concentration - Schedule of Consolidated Financial Information of VIEs and VIE's Subsidiaries - Balance sheet (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Current assets: |  |  |  |  |
Cash and cash equivalents |  | $ 123,358 | $ 137,248 | $ 162,465 | $ 122,930
Short-term investments |  | 115,652 | 117,821 |  |
Accounts receivable, net |  | 26,135 | 22,983 |  |
Due from related parties |  | 15,578 | 10,970 |  |
Inventories |  | 1,363 | 1,726 |  |
Prepayments and other current assets |  | 11,842 | 11,534 |  |
Total current assets |  | 293,928 | 302,282 |  |
Non-current assets: |  |  |  |  |
Long-term investments |  | 31,495 | 26,734 |  |
Property and equipment, net |  | 57,657 | 50,725 |  |
Intangible assets, net |  | 8,299 | 8,857 |  |
Goodwill |  | 23,136 | 22,607 | 20,382 |
Long-term prepayments and other assets |  | 2,787 | 905 |  |
Right-of-use assets |  | 27 | 1,954 | $ 8,747 |
Restricted cash |  | 4,078 | 1,541 |  |
Total assets |  | 440,718 | 415,605 |  |
Current liabilities: |  |  |  |  |
Accounts payable |  | 26,407 | 20,644 |  |
Due to related parties |  | 1,597 | 5,389 |  |
Bank borrowings |  | 2,876 |  |  |
Contract liabilities and deferred income |  | 36,892 | 34,040 |  |
Accrued liabilities and other payables |  | 49,557 | 38,689 |  |
Lease liabilities, current portion |  | 18 | 1,961 |  |
Total current liabilities |  | 119,878 | 103,276 |  |
Non-current liabilities: |  |  |  |  |
Contract liabilities and deferred income, non-current portion | [1] | 845 | 920 |  |
Deferred tax liabilities |  | 930 | 1,085 |  |
Bank borrowings, non-current portion |  | 17,291 | 19,924 |  |
Lease liabilities, non-current portion |  | 7 | 27 |  |
Total liabilities |  | 138,951 | 125,232 |  |
Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |  |
Current assets: |  |  |  |  |
Cash and cash equivalents |  | 16,645 | 14,284 |  |
Short-term investments |  | 6,373 |  |  |
Accounts receivable, net |  | 26,003 | 22,983 |  |
Amount due from group companies |  | 3,102 | 15,168 |  |
Due from related parties |  | 15,387 | 10,955 |  |
Inventories |  | 1,363 | 1,726 |  |
Prepayments and other current assets |  | 7,142 | 10,046 |  |
Total current assets |  | 76,015 | 75,162 |  |
Non-current assets: |  |  |  |  |
Long-term investments |  | 6,467 | 5,706 |  |
Property and equipment, net |  | 57,417 | 50,532 |  |
Intangible assets, net |  | 8,299 | 8,857 |  |
Goodwill |  | 23,136 | 22,607 |  |
Long-term prepayments and other assets |  | 2,684 | 905 |  |
Right-of-use assets |  | 27 | 1,915 |  |
Restricted cash |  | 4,078 | 1,541 |  |
Total assets |  | 178,123 | 167,225 |  |
Current liabilities: |  |  |  |  |
Accounts payable |  | 23,789 | 20,588 |  |
Amount due to group companies |  | 146,732 | 106,240 |  |
Due to related parties |  | 91 | 55 |  |
Bank borrowings |  | 2,876 |  |  |
Contract liabilities and deferred income |  | 36,740 | 34,040 |  |
Income tax payable |  | 2,451 | 2,500 |  |
Accrued liabilities and other payables |  | 42,449 | 33,361 |  |
Lease liabilities, current portion |  | 18 | 1,912 |  |
Total current liabilities |  | 255,146 | 198,696 |  |
Non-current liabilities: |  |  |  |  |
Contract liabilities and deferred income, non-current portion |  | 845 | 920 |  |
Deferred tax liabilities |  | 930 | 1,085 |  |
Amount due to group companies, non-current portion |  | 31,369 | 76,810 |  |
Bank borrowings, non-current portion |  | 17,291 | 19,924 |  |
Lease liabilities, non-current portion |  | 7 | 27 |  |
Total liabilities |  | $ 305,588 | $ 297,462 |  |
[1] | As of December 31, 2020 and 2021, the non-current portion consists of membership subscription of USD751,000 and USD845,000, and government grants of USD169,000 and nil, respectively.

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