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Notes Payable and Other Noncurrent Liabilities - Current and Noncurrent Portions of Notes Payable (Details) - USD ($) $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Jan. 22, 2019 | Mar. 31, 2019 | Dec. 31, 2018
Notes Payable and Other Noncurrent Liabilities |  |  |
Less: Current portion |  | $ 48,422 | $ 36,468
Notes payable, less current portion |  | 199,994 | 23,437
Amended and restated credit agreement dated January 22, 2019 |  |  |
Notes Payable and Other Noncurrent Liabilities |  |  |
Notes payable including current portion |  | 248,416 | 59,905
Less: Current portion |  | 48,422 | 36,468
Notes payable, less current portion |  | 199,994 | 23,437
Amended and restated credit agreement dated January 22, 2019 | 30 Day LIBOR |  |  |
Notes Payable and Other Noncurrent Liabilities |  |  |
Margin on interest rate | 2.00% |  |
Amended and restated credit agreement dated January 22, 2019 | Term loan facility |  |  |
Notes Payable and Other Noncurrent Liabilities |  |  |
Quarterly payment of notes payable |  | $ 12,188 |
Interest rate of notes payable |  | 4.49% |
Notes payable including current portion |  | $ 242,166 | 59,905
Amended and restated credit agreement dated January 22, 2019 | Term loan facility | 30 Day LIBOR |  |  |
Notes Payable and Other Noncurrent Liabilities |  |  |
Margin on interest rate |  | 2.00% |
Amended and restated credit agreement dated January 22, 2019 | Revolving Line of Credit [Member] |  |  |
Notes Payable and Other Noncurrent Liabilities |  |  |
Interest rate of notes payable |  | 4.49% |
Notes payable including current portion |  | $ 6,250 | $ 0
Amended and restated credit agreement dated January 22, 2019 | Revolving Line of Credit [Member] | 30 Day LIBOR |  |  |
Notes Payable and Other Noncurrent Liabilities |  |  |
Margin on interest rate |  | 2.00% |

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