Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Additional Information (Details)

v3.19.2
Earnings Per Share - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Earnings Per Share [Abstract]        
Common stock dividends $ 502,407 $ 495,266 $ 1,005,701 $ 995,286
Common stock dividends per share $ 0.065 $ 0.065 $ 0.13 $ 0.13