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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, 2021 USD ($) segment $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Dec. 31, 2019 USD ($) segment $ / shares shares
Net Income (Loss) Per Common Share |  |  |
Number of outstanding units not included in computation of Diluted EPS (in shares) | 140,000 | 1,074,375 | 150,000
Warrants exercise price | $ / shares | $ 57.47 |  |
Numerator: |  |  |
Net income (loss) | $ | $ 111,910 | $ (8,515) | $ 340,099
Denominator: |  |  |
Basic earnings per share weighted average shares (in shares) | 50,348,000 | 50,195,000 | 50,932,000
Dilution due to stock options and restricted stock units (in shares) | 405,000 |  | 443,000
Diluted earnings per share weighted average shares | 50,753,000 | 50,195,000 | 51,375,000
Basic earnings (loss) per share (in dollars per share) | $ / shares | $ 2.22 | $ (0.17) | $ 6.68
Diluted earnings (loss) per share (in dollars per share) | $ / shares | $ 2.20 | $ (0.17) | $ 6.62
Fair Value of Financial Instruments |  |  |
Fair value of long-term debt | $ | $ 3,132,100 | $ 3,244,000 |
Total long-term debt | $ | $ 3,140,938 | $ 3,236,002 |
Segment Reporting |  |  |
Number of operating segments | segment |  |  | 3
Number of reporting segments | segment | 2 |  |
Warrants to purchase common stock |  |  |
Net Income (Loss) Per Common Share |  |  |
Number of outstanding units not included in computation of Diluted EPS (in shares) | 78,000 |  |

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