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Debt: Notes Payable (Details) - USD ($) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
May 31, 2015 | Dec. 30, 2017 | Dec. 26, 2015 | Jul. 31, 2017
Notes Payable |  |  |  |
Proceeds from the Note Agreement |  | $ 12,500,000 | $ 25,000,000 |
Notes Payable | Prudential Investment Management, Inc |  |  |  |
Notes Payable |  |  |  |
Principal amount outstanding |  | 32,200,000 |  |
Minimum prepayment |  | 1,000,000 |  |
Series A Notes | Prudential Investment Management, Inc |  |  |  |
Notes Payable |  |  |  |
Note payable, face amount | $ 25,000,000 |  |  |
Proceeds from the Note Agreement | $ 25,000,000 |  |  |
Principal amount outstanding |  | $ 20,000,000 |  |
Term of notes payable |  | 10 years |  |
Interest rate (as a percent) |  | 5.50% |  |
Quarterly principal payment, first five years |  | $ 500,000 |  |
Quarterly principal payment, thereafter |  | $ 750,000 |  |
Series B Notes | Prudential Investment Management, Inc |  |  |  |
Notes Payable |  |  |  |
Note payable, face amount |  |  |  | $ 12,500,000
Term of notes payable |  | 10 years |  |
Interest rate (as a percent) |  | 5.10% |  |
Quarterly principal payment |  | $ 312,500 |  |

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