Net Income Per Common Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net Income per Common Share [Abstract]
Net income available to common stockholders	$ 7,117	$ 2,521
Basic earnings per share- Income available to Common stockholders	6,834	2,179
Diluted earnings per share- Income available to Common stockholders	$ 6,834	$ 2,179
Basic earnings per share- Income available to Common stockholders, Shares	17,115	17,502
Effect of dilutive securities: Stock options: Shares	117	49
Diluted earnings per share- Income available to Common stockholders, Shares	17,232	17,551
Basic earnings per share- Income available to Common stockholders, Per share amount	$ 0.40	$ 0.12
Diluted earnings per share - Income available to Common stockholders, Per share amount	$ 0.40	$ 0.12