(Loss) Earnings Per Share - Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Net (Loss) Income	$ (17,395)	$ 3,746	$ (13,719)	$ 9,650
Weighted-Average Basic Common Shares Outstanding (in shares)	5,395,342	5,433,289	5,406,710	5,433,296
Dilutive Effect of Common Stock Equivalents (Stock Options and Restricted Stock) (in shares)	0	25,434	0	18,409
Weighted-Average Diluted Common Shares and Common Stock Equivalents Outstanding (in shares)	5,395,342	5,458,723	5,406,710	5,451,705
(Loss) Earnings Per Share:
Basic (in dollars per share)	$ (3.22)	$ 0.69	$ (2.54)	$ 1.78
Diluted (in dollars per share)	$ (3.22)	$ 0.69	$ (2.54)	$ 1.77