Commitments and Contingencies - Additional Information (Details) ¥ in Millions |
12 Months Ended | |||||
|---|---|---|---|---|---|---|
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
Dec. 31, 2015
USD ($)
|
Dec. 31, 2017
CNY (¥)
|
Jun. 30, 2017
USD ($)
|
Jun. 30, 2017
CNY (¥)
|
|
| Loss Contingencies [Line Items] | ||||||
| Total operating leases expenses | $ 916,612 | $ 285,742 | $ 148,274 | |||
| JING | ||||||
| Loss Contingencies [Line Items] | ||||||
| Capital commitment to underlying investment | 3,900,000 | ¥ 26.3 | $ 3,900,000 | ¥ 26.3 | ||
| Unfunded capital contribution commitment | 2,000,000 | ¥ 13.2 | ||||
| Property and Equipment | ||||||
| Loss Contingencies [Line Items] | ||||||
| Purchase obligation | $ 4,926,073 | |||||