Earnings Per Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator
Net income	$ 33,311	$ 142,496
Denominator
Weighted average common shares outstanding - basic	31,914,414	33,530,610
Dilutive effect of restricted stock units	202,668	411,624
Weighted average common shares outstanding - diluted	32,117,082	33,942,234
Earnings per share:
Basic	$ 1.04	$ 4.25
Diluted	$ 1.04	$ 4.20