XML 81 R68.htm IDEA: XBRL DOCUMENT v3.19.3
Equity - Additional Information (Details) - Secondary Public Offering [Member] - Common Shares [Member]
$ / shares in Units, $ in Millions
May 31, 2018
USD ($)
$ / shares
shares
Class Of Stock [Line Items]  
Shares of common stock issued in public offering | shares 4,600,000
Common stock sale price per share | $ / shares $ 18.50
Net proceeds from sale of common stock in public offering $ 79.5
Payments of offering costs $ 0.5