Nature of Operations and Summary of Significant Accounting Policies - Net Income (Loss) Per Share and Fair Value (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) segment $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares
Net Income (Loss) Per Common Share
Number of outstanding units not included in computation of Diluted EPS (in shares)	859,000	78,000	896,000
Numerator:
Net income (loss) | $	$ 72,953	$ 111,910	$ (8,515)
Denominator:
Basic earnings per share weighted average shares (in shares)	50,548,000	50,348,000	50,195,000
Dilution due to employee equity awards and warrants (in shares)	96,000	405,000
Diluted earnings per share weighted average shares	50,644,000	50,753,000	50,195,000
Basic earnings per share (in dollars per share) | $ / shares	$ 1.44	$ 2.22	$ (0.17)
Diluted earnings per share (in dollars per share) | $ / shares	$ 1.44	$ 2.20	$ (0.17)
Fair Value of Financial Instruments
Total long-term debt | $	$ 3,409,311	$ 3,140,938
Segment Reporting
Number of reporting segments | segment	2
Performance Share Units (PSUs)
Net Income (Loss) Per Common Share
Number of outstanding units not included in computation of Diluted EPS (in shares)	146,000	140,000	178,000
Warrants PSP1
Net Income (Loss) Per Common Share
Number of outstanding units not included in computation of Diluted EPS (in shares)	437,000		582,000
Warrants exercise price | $ / shares	$ 28.38
Warrants PSP2
Net Income (Loss) Per Common Share
Number of outstanding units not included in computation of Diluted EPS (in shares)	125,000
Warrants exercise price | $ / shares	$ 40.41
Warrants PSP3
Net Income (Loss) Per Common Share
Number of outstanding units not included in computation of Diluted EPS (in shares)	78,000	78,000
Warrants exercise price | $ / shares	$ 57.47
Employee Stock Option
Net Income (Loss) Per Common Share
Number of outstanding units not included in computation of Diluted EPS (in shares)	219,000		314,000