Earnings Per Share - Tabular Disclosure (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share
Net income (loss)	$ 246	$ (15,685)	$ 29,215	$ 8,102
Net income (loss) - basic	246	(15,685)	29,215	8,102
Net income (loss) - diluted	$ 246	$ (15,685)	$ 29,215	$ 8,102
Weighted average common shares outstanding:
Basic	25,388,630	25,492,274	25,473,006	24,654,722
Common Share equivalents (in shares)	655,050		660,658	729,796
Diluted (in shares)	26,043,680	25,492,274	26,133,664	25,384,518
Earnings per share:
Basic (in dollars per share)	$ 0.01	$ (0.62)	$ 1.15	$ 0.33
Earnings per share:
Diluted (in dollars per share)	$ 0.01	$ (0.62)	$ 1.12	$ 0.32