The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The cash inflow associated with the sale of securities classified as trading securities and held for investment purposes. Excludes proceeds from trading securities purchased and held principally for the purpose of selling them in the near term (thus held for only a short period of time).

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This element represents disclosure of the amount of gain which has been deferred as the result of the sale of a business or operating assets to a highly leveraged entity under cost method which deferred gain has been reflected in the accompanying statement of financial position as reduction from the related asset.

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Represents the percentage of equity interest disposed in cost method investments.

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Long-term investments - Additional Information (Details)	1 Months Ended					12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2021 CNY (¥)	Oct. 31, 2021 USD ($)	May 31, 2021 USD ($)	Oct. 31, 2020	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Net unrealized gains on investments held						$ 794,000
Impairment of long-term investments						794,000	$ 19,831,000
Shanghai Lexiang [Member]
Percentage of equity interest disposed					4.82
Consideration for disposal of equity interest							$ 268,000
Net unrealized gains on investments held						794,000
Impairment of long-term investments						$ 794,000
Clapper Media Group Inc. [Member] \| Xunlei HK
Payments to Acquire Equity Method Investments			$ 1,000,000
Zhuhai Qianyou [Member]
Consideration for disposal of equity interest				$ 298,000
Percent of equity interest owned						19.00%
Yunshang Hemei [Member] \| Wangwenhua
Payments to Acquire Equity Method Investments	$ 627,384	¥ 4,000,000
Blue Bayread Limited [Member] \| Xunlei BVI
Payments to Acquire Equity Method Investments	$ 3,000,000