XML 21 R40.htm IDEA: XBRL DOCUMENT v3.20.1
Earnings Per Share - Narrative (Details) - shares
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Stock options and restricted share units ("RSU's")    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Number of securities excluded from the calculations of diluted earnings per share 309,443 171,509