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Investment in Leasing Operations: Risk Concentration (Details) - Total assets - customer	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016
Investment in leasing operations
Number of customers	1	2
Customer One Concentration Risk
Investment in leasing operations
Percentage of concentration risk	26.00%	19.00%
Customer Two Concentration Risk
Investment in leasing operations
Percentage of concentration risk		17.00%

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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-Publisher FASB
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Represents the number of customers that individually account for 10 percent or more of the defined benchmark.

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