Variable Interest Entities and Joint Ventures (Details) - USD ($) $ in Thousands				12 Months Ended
		Aug. 05, 2021	Feb. 23, 2021	Dec. 31, 2021	Sep. 07, 2021	Dec. 31, 2020	Mar. 24, 2019
Class A Common Stock
Schedule of Equity Method Investments [Line Items]
Conversion of convertible securities (in shares)	[1]			423,053
The9 Joint Venture
Schedule of Equity Method Investments [Line Items]
Conditional obligation						$ 1,128
The9 Joint Venture | Class A Common Stock
Schedule of Equity Method Investments [Line Items]
Conversion of convertible securities (in shares)			423,053
The Geely Intellectual Property License Agreement
Schedule of Equity Method Investments [Line Items]
One-time license amount paid					$ 50,000
The9 Limited | The9 Joint Venture
Schedule of Equity Method Investments [Line Items]
Ownership percentage							50.00%
Conditional obligation							$ 5,000
LeSEE
Schedule of Equity Method Investments [Line Items]
Ownership interest		99.00%
LeSEE | LeSEE Zhile Technology Co, Ltd
Schedule of Equity Method Investments [Line Items]
Ownership interest transferred		48.00%
Consideration paid		$ 0
Ownership interest		1.00%

[1] The shares of the Company’s common stock prior to the Business Combination (as defined in Note 1) have been retrospectively recast to reflect the change in the capital structure as a result of the Business Combination as described in Note 3.