Earnings Per Share - Components of Basic and Diluted Net Income Per Common Share (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Basic Net Income per Common Share Available to Common Stockholders:
Net income	$ 4,109,000	$ 9,999,000
Weighted average common shares outstanding	17,299,927	16,693,183
Basic earnings per common share	$ 0.24	$ 0.60
Diluted Net Income per Common Share Available to Common Stockholders:
Net income applicable to diluted earnings per share	$ 4,109,000	$ 9,999,000
Weighted average common shares outstanding	17,299,927	16,693,183
Dilutive potential common shares:
Restricted stock awarded	53,020	46,908
Dilutive potential common shares	53,020	46,908
Diluted weighted average common shares outstanding	17,352,947	16,740,091
Diluted earnings per common share	$ 0.24	$ 0.60