Investment in Leasing Operations: Risk Concentration (Details) - Total assets	3 Months Ended
Mar. 30, 2019 customer
Investment in leasing operations
Number of customers	2
Customer One Concentration Risk
Investment in leasing operations
Percentage of concentration risk	19.00%
Customer Two Concentration Risk
Investment in leasing operations
Percentage of concentration risk	10.00%

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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