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v3.21.1

Certain risks and concentration - Schedule of Consolidated Financial Information of VIEs and VIE's Subsidiaries - Balance sheet (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Current assets: |  |  |  |
Cash and cash equivalents |  | $ 137,248 | $ 162,465 |
Short-term investments |  | 117,821 | 102,847 |
Accounts receivable, net |  | 22,983 | 27,533 |
Due from related parties |  | 10,970 | 1,658 |
Inventories |  | 1,726 | 5,537 |
Prepayments and other current assets |  | 11,534 | 16,543 |
Total current assets |  | 302,282 | 316,583 |
Non-current assets: |  |  |  |
Long-term investments |  | 26,734 | 26,365 |
Deferred tax assets |  |  | 1,118 |
Property and equipment, net |  | 50,725 | 38,770 |
Intangible assets, net |  | 8,857 | 9,426 |
Goodwill |  | 22,607 | 20,382 | $ 20,717
Other long-term prepayments and non-current assets |  | 905 | 313 |
Right-of-use assets |  | 1,954 | 8,747 | $ 11,819
Restricted cash |  | 1,541 | 2,983 |
Total assets |  | 415,605 | 424,687 |
Current liabilities: |  |  |  |
Accounts payable (including inter-companies balances with the Company and its subsidiaries of USD 21,297 and USD 30,439 as of December 31, 2019 and 2020, respectively) |  | 20,644 | 24,213 |
Due to a related party |  | 5,389 | 5,002 |
Contract liabilities and deferred income, current portion |  | 34,040 | 31,988 |
Accrued liabilities and other payables (including inter-companies balances with the Company and its subsidiaries of USD 152,904 and USD 152,611 as of December 31, 2019 and 2020, respectively) |  | 38,689 | 42,840 |
Lease liabilities, current portion |  | 1,961 | 4,693 |
Total current liabilities |  | 103,276 | 111,286 |
Non-current liabilities: |  |  |  |
Contract liabilities and deferred income, non-current portion | [1] | 920 | 1,223 |
Deferred tax liabilities |  | 1,085 | 1,179 |
Lease liabilities, non-current portion |  | 27 | 4,132 |
Bank borrowings |  | 19,924 | 11,324 |
Total liabilities |  | 125,232 | 129,144 |
Variable Interest Entity, Primary Beneficiary [Member] |  |  |  |
Current assets: |  |  |  |
Cash and cash equivalents |  | 14,284 | 34,847 |
Short-term investments |  |  | 292 |
Accounts receivable, net |  | 32,485 | 30,686 |
Due from related parties |  | 10,955 | 1,644 |
Inventories |  | 1,726 | 5,330 |
Prepayments and other current assets |  | 15,712 | 20,747 |
Total current assets |  | 75,162 | 93,546 |
Non-current assets: |  |  |  |
Long-term investments |  | 5,706 | 5,337 |
Deferred tax assets |  |  | 985 |
Property and equipment, net |  | 50,532 | 38,417 |
Intangible assets, net |  | 8,857 | 9,426 |
Goodwill |  | 22,607 | 20,382 |
Other long-term prepayments and non-current assets |  | 905 | 313 |
Right-of-use assets |  | 1,915 | 8,619 |
Restricted cash |  | 1,541 | 2,983 |
Total non-current assets |  | 92,063 | 86,462 |
Total assets |  | 167,225 | 180,008 |
Current liabilities: |  |  |  |
Accounts payable (including inter-companies balances with the Company and its subsidiaries of USD 21,297 and USD 30,439 as of December 31, 2019 and 2020, respectively) | [2] | 51,027 | 45,162 |
Due to a related party |  | 55 | 2 |
Contract liabilities and deferred income, current portion |  | 34,040 | 31,988 |
Income tax payable |  | 2,500 | 2,436 |
Accrued liabilities and other payables (including inter-companies balances with the Company and its subsidiaries of USD 152,904 and USD 152,611 as of December 31, 2019 and 2020, respectively) | [3] | 185,972 | 191,406 |
Lease liabilities, current portion |  | 1,912 | 4,621 |
Total current liabilities |  | 275,506 | 275,615 |
Non-current liabilities: |  |  |  |
Contract liabilities and deferred income, non-current portion |  | 920 | 1,223 |
Deferred tax liabilities |  | 1,085 | 1,179 |
Lease liabilities, non-current portion |  | 27 | 4,073 |
Bank borrowings |  | 19,924 | 11,324 |
Total non-current liabilities |  | 21,956 | 17,799 |
Total liabilities |  | $ 297,462 | $ 293,414 |
[1] | As of December 31, 2019 and 2020, the non-current portion consists of membership subscription of USD 781,000 and USD 751,000, and government grants of USD 442,000 and USD 169,000, respectively.
[2] | Excluding the inter-companies balances with the Company and its subsidiaries of USD 21,297,000 and USD 30,439,000, the balance of accounts payable as of December 31, 2019 and 2020, was USD 23,865,000 and USD 20,588,000, respectively.
[3] | Excluding the inter-companies balances with the Company and its subsidiaries of USD 152,904,000 and USD 152,611,000, the balance of accrued liabilities and other payables as of December 31, 2019 and 2020 was USD 38,502,000 and USD 33,361,000, respectively.

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