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Leases (Tables) | 9 Months Ended
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Sep. 26, 2020
Operating Lease Cost [Abstract] |
Lease, Cost [Table Text Block] | The components of lease expense were as follows (in thousands):
| Three Months Ended |  | Nine Months Ended
| September 26, 2020 |  | September 28, 2019 |  | September 26, 2020 |  | September 28, 2019
Operating lease cost | $ | 2,287 |  |  | $ | 2,250 |  |  | $ | 6,932 |  |  | $ | 6,539 |
Variable lease cost | 823 |  |  | 828 |  |  | 2,827 |  |  | 2,965 |
Total lease cost | $ | 3,110 |  |  | $ | 3,078 |  |  | $ | 9,759 |  |  | $ | 9,504 |
Schedule of Leases, Supplemental Cash Flow [Table Text Block] | Supplemental cash flow information related to leases was as follows (in thousands):
| Three Months Ended |  | Nine Months Ended
| September 26, 2020 |  | September 28, 2019 |  | September 26, 2020 |  | September 28, 2019
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |  |  |  |
Operating cash flows from operating leases | $ | 2,750 |  |  | $ | 2,566 |  |  | $ | 7,516 |  |  | $ | 7,447 |
Right-of-use assets obtained in exchange for lease obligations: |  |  |  |  |  |  |
Operating leases | $ | 744 |  |  | $ | 460 |  |  | $ | 2,310 |  |  | $ | 53,227 |
Lessee, Operating Lease, Liability, Maturity [Table Text Block] | Maturities of operating lease liabilities were as follows as of September 26, 2020 (in thousands):
Remainder of 2020 | $ | 1,613 |
2021 | 8,845 |
2022 | 8,564 |
2023 | 7,592 |
2024 | 6,535 |
Thereafter | 35,017 |
Total minimum lease payments | $ | 68,166 |
Less: imputed interest | 9,926 |
Present value of future minimum lease payments | $ | 58,240 |
Less: current portion of operating lease liabilities (Note 7) | 6,343 |
Long-term lease liabilities | $ | 51,897 |

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- Definition Schedule of Leases, Supplemental Cash Flow [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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