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Additional information: condensed financial statements of the Company - Schedule of Condensed Statement of Cash Flows (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash flows from investing activities |  |  |
Repayment of loans from group companies | $ 177 |  |
Cash flows from financing activities |  |  |
Net increase/(decrease) in cash, cash equivalents and restricted cash | (13,362) | $ (31,988) | $ 45,788
Cash, cash equivalents and restricted cash at beginning of year | 138,789 | 165,448 | 122,930
Effect of exchange rates on cash and cash equivalents | 2,009 | 5,329 | (3,270)
Cash, cash equivalents and restricted cash at end of year | 127,436 | 138,789 | 165,448
Xunlei Limited [Member] |  |  |
Cash flows from operating activities |  |  |
Other operating activities with external parties | (5,732) | 649 | 3,854
Net cash generated from/(used in) operating activities | (5,732) | 649 | 3,854
Cash flows from investing activities |  |  |
Capital contribution to group companies |  |  | (100,000)
Loans to group companies | (26,391) | (1,802) | (25,750)
Repayment of loans from group companies |  | 500 | 2,459
Other investing activities with external parties | 6,553 | 55,030 | 79,339
Net cash (used in)/generated from investing activities | (19,838) | 53,728 | (43,952)
Cash flows from financing activities |  |  |
Other financing activities with external parties |  | (4,475) |
Net cash used in financing activities |  | (4,475) |
Net increase/(decrease) in cash, cash equivalents and restricted cash | (25,570) | 49,902 | (40,098)
Cash, cash equivalents and restricted cash at beginning of year | 57,585 | 7,683 | 47,781
Effect of exchange rates on cash and cash equivalents | 0 | 0 | 0
Cash, cash equivalents and restricted cash at end of year | $ 32,015 | $ 57,585 | $ 7,683

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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3044-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=123431023&loc=SL98516268-108586 + Details
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- Definition Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585 + Details
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