Registration statement for securities of certain foreign private issuers

Equity (Details)

v3.19.3.a.u2
Equity (Details) - Ordinary Shares [Member] - shares
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Statement Line Items [Line Items]      
Number of shares authorized 80,000,000 80,000,000 80,000,000
Number of shares issued and outstanding 40,399,290 33,295,618 28,156,728