Earnings Per Share - Basic and Diluted Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Net income (loss)		$ 5,552	$ 1,505	$ 916	$ (3,220)
Weighted average common shares outstanding, basic and diluted	[1]	9,686,631	9,595,668	9,684,193	9,594,221
Earnings (loss) per common share, basic and diluted		$ 0.57	$ 0.16	$ 0.09	$ (0.34)

[1] The non-vested shares of the restricted stock units and stock options were anti-dilutive as of June 30, 2021 and 2020.  Therefore, the basic and diluted weighted average common shares are equal for the three and six months ended June 30, 2021 and 2020