Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Significant Accounting Policies (Details)

v3.19.1
Significant Accounting Policies (Details)
 12 Months Ended
Dec. 31, 2018
Computer Equipment [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Property and equipment, useful lives 15.00%
Computer Equipment [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Property and equipment, useful lives 33.00%
Office Equipment [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Property and equipment, useful lives 6.00%
Office Equipment [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Property and equipment, useful lives 15.00%
Equipment [Member] | Minimum [Member]  
Property, Plant and Equipment [Line Items]  
Property and equipment, useful lives 7.00%
Equipment [Member] | Maximum [Member]  
Property, Plant and Equipment [Line Items]  
Property and equipment, useful lives 33.00%
Leasehold Improvements [Member]  
Property, Plant and Equipment [Line Items]  
Property and equipment, useful lives [1]
[1] Leasehold improvements are amortized on a straight-line basis over the shorter of the lease term (including the extension option held by the Group and intended to be exercised) and the expected life of the improvement.