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Derivative Financial Instruments - Interest Rate Swaps (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 22, 2020 | Mar. 17, 2020 | Dec. 25, 2021 | Dec. 26, 2020 | Dec. 28, 2019 | Dec. 30, 2017
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Derivative, notional amount |  |  |  |  |  | $ 95,600
Building Term Loan |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Debt instrument, interest rate, effective percentage |  | 2.75% |  |  |  |
Interest Rate Contract | Building Term Loan |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Derivative, notional amount |  | $ 18,000 | $ 18,000 |  |  |
Derivative, floor interest rate |  | 0.00% |  |  |  |
Derivative, floor interest rate term |  | 1 year | 1 year |  |  |
Interest Rate Swap | Designated as Hedging Instrument | Cash Flow Hedging |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion) |  |  | $ 451 | $ (119) | $ (86) |
Interest Rate Swap | Other income, net | Designated as Hedging Instrument | Cash Flow Hedging |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) |  |  | (154) | $ (64) | $ 548 |
Senior Secured Term Loan |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Derivative, notional amount |  |  | $ 16,500 |  |  |
Fixed interest rate, derivative |  |  |  |  |  | 2.94%
LIBOR | Building Term Loan |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 1.75% | 1.75% | 1.75% |  |  |
LIBOR | Senior Secured Term Loan |  |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |  |
Derivative variable rate basis spread |  |  |  |  |  | 2.00%

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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