Subsequent Events - Additional information (Details) - ATA Online Sale Transaction $ in Millions |
1 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2020
CNY (¥)
|
Mar. 31, 2020
USD ($)
|
Dec. 31, 2019
CNY (¥)
|
|
| Subsequent Event [Line Items] | |||
| Loss contingency accrued | ¥ 0 | ||
| Subsequent Events | |||
| Subsequent Event [Line Items] | |||
| Total consideration | $ | $ 200.0 | ||
| Subsequent Events | Alpha Advantage Global Limited and Dynamic Fame Limited | |||
| Subsequent Event [Line Items] | |||
| Attorney’s fees and other litigation costs | ¥ 15,000,000 | ||
| Subsequent Events | Mr. Kevin Xiaofeng Ma | Alpha Advantage Global Limited | |||
| Subsequent Event [Line Items] | |||
| Loss contingency, damages sought, value | 95,000,000 | ||
| Attorney’s fees and other litigation costs | 1,500,000 | ||
| Subsequent Events | Mr. Kevin Xiaofeng Ma | Dynamic Fame Limited | |||
| Subsequent Event [Line Items] | |||
| Loss contingency, damages sought, value | 5,000,000 | ||
| Attorney’s fees and other litigation costs | ¥ 500,000 | ||