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Fair Value Measurements and Fair Value of Financial Instruments - Debt Obligations (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Revolving credit facility	$ 265,419	$ 141,106
Commercial real estate loan	19,425	20,475
Senior promissory notes	10,000	10,000
Debt obligations	294,844	171,581
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Revolving credit facility	265,419	141,106
Commercial real estate loan	20,541	20,575
Senior promissory notes	10,803	10,120
Debt obligations	$ 296,763	$ 171,801

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+ References

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611

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- Definition

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20,22)
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