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Income Taxes: Reconciliation, Components and Deferred Taxes (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 26, 2020 | Dec. 28, 2019 | Dec. 29, 2018
Income Taxes: |  |  |
Federal statutory tax rate (as a percent) | 21.00% | 21.00% | 21.00%
Reconciliation of the expected federal income tax expense based on the federal statutory tax rate to the actual income tax expense |  |  |
Federal income tax expense at statutory rate (21%, 21%, 35%) | $ 8,088,600 | $ 8,708,200 | $ 8,249,400
Change in valuation allowance | 54,000 | 147,900 | (13,800)
State and local income taxes, net of federal benefit | 1,368,500 | 1,310,800 | 1,334,100
Permanent differences, including stock option expenses | (1,027,300) | (1,056,800) | (355,500)
Adjustment to uncertain tax positions | 85,100 | (58,500) | 4,500
Other, net | 125,200 | 266,500 | (61,100)
Total provision for income taxes | 8,694,100 | 9,318,100 | 9,157,600
Current provision for income taxes: |  |  |
Federal | 7,836,000 | 9,076,400 | 6,355,800
State | 1,795,800 | 1,693,800 | 1,551,000
Foreign | 286,000 | 363,200 | 423,000
Current provision | 9,917,800 | 11,133,400 | 8,329,800
Deferred provision for income taxes: |  |  |
Federal | (1,202,100) | (1,834,800) | 967,300
State | (21,600) | 19,500 | (139,500)
Deferred provision | (1,223,700) | (1,815,300) | 827,800
Total provision for income taxes | 8,694,100 | 9,318,100 | $ 9,157,600
Deferred tax assets: |  |  |
Accounts receivable and lease reserves | 66,600 | 154,700 |
Non-qualified stock option expense | 1,581,900 | 1,758,100 |
Deferred revenue | 1,885,400 | 1,957,500 |
Trademarks | 36,100 | 34,500 |
Lease deposits | 532,600 | 930,700 |
Loss from and impairment of equity and note investments | 2,637,600 | 2,595,500 |
Foreign tax credits | 185,000 | 173,100 |
Valuation allowance | (2,822,600) | (2,768,600) |
Other | 204,600 | 194,400 |
Total deferred tax assets | 4,307,200 | 5,029,900 |
Deferred tax liabilities: |  |  |
Lease revenue and initial direct costs | (2,330,700) | (4,207,400) |
Depreciation and amortization | (85,800) | (155,500) |
Total deferred tax liabilities | (2,416,500) | (4,362,900) |
Total net deferred tax liabilities | $ 1,890,700 | $ 667,000 |

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from lease deposits. + References No definition available. + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to loss on equity and impairment of note investments. + References No definition available. + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts and lease reserves. + References No definition available. + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. + References No definition available. + Details
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