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Fair Value Measurements and Fair Value of Financial Instruments - Carrying Value and Fair Value of Debt Obligations (Details) - USD ($) $ in Thousands | Sep. 28, 2019 | Dec. 29, 2018
--- | --- | ---
Carrying Value |  |
Debt Obligations: |  |
Revolving credit facility | $ 280,960 | $ 141,106
Commercial real estate loan | 19,688 | 20,475
Senior promissory notes | 10,000 | 10,000
Debt obligations | 310,648 | 171,581
Fair Value |  |
Debt Obligations: |  |
Revolving credit facility | 280,960 | 141,106
Commercial real estate loan | 21,055 | 20,575
Senior promissory notes | 10,928 | 10,120
Debt obligations | $ 312,943 | $ 171,801

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