Investments in Equity Investees (Details) ¥ in Thousands, $ in Thousands	6 Months Ended
Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2017 CNY (¥) item
Equity And Cost Method Investments
Share of loss from equity method investment	$ 406	$ 316
JING
Equity And Cost Method Investments
Number of third-parties \| item			3
Capital contribution commitment \| ¥			¥ 26,250
Percentage of equity interest			20.00%
Share of loss from equity method investment	$ 406	$ 316

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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