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Receivables (Details) - USD ($) $ in Thousands	Sep. 28, 2016	Dec. 30, 2015
Receivables [Abstract]
Trade accounts receivable from franchisees, gross, current	$ 10,064	$ 10,591
Notes receivable from franchisees, gross, current	1,557	1,352
Allowance for doubtful accounts	(280)	(297)
Total current receivables, net	14,175	16,552
Noncurrent assets (included as a component of other noncurrent assets):
Notes receivable from franchisees, noncurrent	579	541
Vendor receivables [Member]
Receivables [Abstract]
Other receivables, gross, current	1,454	3,049
Credit card receivables [Member]
Receivables [Abstract]
Other receivables, gross, current	1,141	1,606
Other [Member]
Receivables [Abstract]
Other receivables, gross, current	$ 239	$ 251

X

- Definition

Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

+ References

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An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date(s) within one year of the balance sheet date or the normal operating cycle, whichever is longer. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

+ References

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An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date more than one year from the balance sheet date, net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

+ References

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The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

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