Earnings Per Share - Summary of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Numerator
Net income available to common stockholders	$ 4,919	$ 1,603
Weighted average number of common shares
Outstanding for basic earnings per common share (in shares)	9,498,783	9,498,783
Weighted-average number of shares outstanding for diluted earnings per common share (in shares)	9,498,783	9,498,783
Earnings per share - basic (in dollars per share)	$ 0.52	$ 0.17
Earnings per share - diluted (in dollars per share)	$ 0.52	$ 0.17