Investment in Leasing Operations: Credit Losses (Details) - USD ($)	9 Months Ended
Sep. 24, 2016	Sep. 26, 2015	Dec. 26, 2015
Investment In Leases
Total investment in direct financing and sales-type leases	$ 38,129,700		$ 39,806,600
Allowance for Credit Losses
Collectively evaluated for loss potential	817,700		859,100
Total	817,700		859,100
Investment in leases
Activity in the allowance for credit losses for leasing operations
Balance at beginning of period	859,100	$ 386,000
Provisions charged to expense	(52,000)	(123,400)
Recoveries	39,800	628,700
Deductions for amounts written-off	(29,200)	(9,300)
Balance at end of period	817,700	$ 882,000
Investment In Leases
Collectively evaluated for loss potential	38,129,700		39,806,600
Total investment in direct financing and sales-type leases	$ 38,129,700		$ 39,806,600

A valuation allowance for financing receivables that are expected to be uncollectible.

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

+ Details

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ References

+ Details

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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- Definition

n/a

+ References

No definition available.

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- Definition

The lessor's asset under sales type and direct financing leases. The investment in direct financing and sales-type leases, as of the balance sheet date, consisting of: (a) minimum lease payments due on direct financing leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs on direct financing leases; less: (i) estimated executory costs, (ii) unearned income, but before deducting the accumulated allowance for uncollectible minimum lease payments.

+ References

No definition available.

+ Details

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- Definition

The estimate of minimum payments on direct financing and sales-type leases that are probable of not being collected, as of the balance sheet date.

+ References

No definition available.

+ Details

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No definition available.

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