Quarterly report pursuant to Section 13 or 15(d)

Basic and diluted earnings per share (Details)

v3.19.3
Basic and diluted earnings per share (Details) - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Earning Per Share $ 0.13 $ 0.20 $ 0.47 $ 0.55
Common Stock [Member]        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Earning Per Share 0.13 0.20 0.47 0.55
Restricted Stock [Member]        
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]        
Earning Per Share $ 0.14 $ 0.20 $ 0.43 $ 0.56