For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13537-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Revenue (Detail Textuals) ¥ in Millions, $ in Millions			12 Months Ended
Revenue (Detail Textuals) ¥ in Millions, $ in Millions	Oct. 08, 2016 USD ($) Installment	Oct. 08, 2016 CNY (¥) Installment	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Majority of revenue percentage			100.00%	99.50%
Legacy YOD \| Customer Concentration Risk [Member] \| Yanhua Agreement
Disaggregation of Revenue [Line Items]
Minimal guarantee fee	$ 2	¥ 13.0
Number of installments \| Installment	2	2
Amount recognized as revenue of the first installment		¥ 6.5
Second installments of agreement to be paid in three months from the date when the first installment		¥ 6.5