Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Selected quarterly financial data and earnings per share [Abstract]
Revenues	$ 644,788	$ 568,181	$ 486,744	$ 325,491	$ 249,755	$ 266,904	$ 152,286	$ 353,477	$ 2,025,204	$ 1,022,422	$ 1,811,247
Operating (losses) earnings	3,672	2,301	6,335	3,851	5,202	6,056	2,935	(19,940)
Net (losses) earnings	$ 2,825	$ 1,546	$ 4,709	$ 2,808	$ 5,846	$ 3,073	$ 3,503	$ (11,427)	$ 11,888	$ 995	$ 8,207
Earnings (losses) per share:
Basic earnings (losses) per share (in dollars per share)	$ 0.65	$ 0.36	$ 1.11	$ 0.66	$ 1.38	$ 0.72	$ 0.83	$ (2.70)	$ 2.78	$ 0.23	$ 1.94
Diluted net (losses) earnings per share (in dollars per share)	$ 0.64	$ 0.36	$ 1.10	$ 0.66	$ 1.37	$ 0.72	$ 0.82	$ (2.69)	$ 2.75	$ 0.23	$ 1.94
Inventory adjustments	$ 10,300				$ (15,000)			$ 24,200	$ 10,300	$ (15,000)	$ 3,700