Gain on insurance settlements (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2017 |
Dec. 25, 2016 |
Dec. 27, 2015 |
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| Gain on insurance settlements [Abstract] | ||||
| Insurance settlements | $ 2,262 | |||
| Proceeds from insurance settlements | $ 1,000 | |||
| Insurance Settlements Receivable | 1,300 | 1,300 | ||
| Costs and expenses | 460 | |||
| Assets disposed, net | 440 | 440 | ||
| Gain on insurance settlements | $ (1,400) | $ (1,362) | $ 0 | $ 0 |
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- Definition Gain on insurance settlements [Abstract] No definition available.
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- Definition Proceeds from insurance settlement No definition available.
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- Definition The carrying amount on the books of the entity of the impaired asset to be disposed of by a method other than sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. No definition available.
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- Definition Amount of excess (deficiency) of insurance recovery over the loss incurred from an insured event. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of cash inflow for proceeds from settlement of insurance claim, classified as operating activities. Excludes insurance settlement classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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