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Significant Accounting Policies: Recent Accounting Pronouncements (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 30, 2017 | Dec. 31, 2016 | Dec. 26, 2015 | Jan. 01, 2018
Recent Accounting Pronouncements |  |  |  |
Excess tax benefit related to stock based compensation | $ 793,400 |  |  |
Excess tax benefits on exercised stock options, operating activities | $ 882,300 | $ 599,400 | $ 26,300 |
Accounting Standards Update 2014-09 | Proforma Adjustment |  |  |  |
Recent Accounting Pronouncements |  |  |  |
Deferred revenue |  |  |  | $ 7,000,000
Accounting Standards Update 2016-09 |  |  |  |
Recent Accounting Pronouncements |  |  |  |
Excess tax benefits on exercised stock options, operating activities |  | 599,400 | 26,300 |
Accounting Standards Update 2016-09 | Previously Reported |  |  |  |
Recent Accounting Pronouncements |  |  |  |
Excess tax benefits on exercised stock options, financing activities |  | $ 599,400 | $ 26,300 |

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