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v3.20.4

Taxes on Income, Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Deferred tax assets [Abstract] |  |
Allowance for doubtful accounts | $ 1,793,000 | $ 1,758,000
Inventory | 13,496,000 | 13,401,000
Insurance accruals | 4,864,000 | 4,397,000
Deferred compensation | 6,040,000 | 1,109,000
Unrealized loss on defined benefit plans | 15,929,000 | 10,253,000
Goodwill and other intangibles | 44,487,000 | 0
Operating loss carryforwards | 82,186,000 | 143,181,000
Pension benefits | 7,444,000 | 6,825,000
Other | 5,480,000 | 7,392,000
Deferred tax assets, gross | 181,719,000 | 188,316,000
Valuation allowances | (18,025,000) | (20,525,000)
Deferred tax assets, net of valuation allowance | 163,694,000 | 167,791,000
Deferred tax liabilities [Abstract] |  |
Property | (678,916,000) | (620,891,000)
Deferred state taxes | (74,468,000) | (63,640,000)
Goodwill and other intangibles | 0 | (54,844,000)
Other | (17,154,000) | (16,620,000)
Deferred tax liabilities | (770,538,000) | (755,995,000)
Net deferred tax liabilities | (606,844,000) | (588,204,000)
Operating Loss Carryforward [Abstract] |  |
Deferred tax assets | 53,498,000 |
State operating loss deferred tax assets | 23,482,000 | 17,282,000
Operating loss carryforwards, net of valuation allowance | $ 12,819,000 | $ 11,760,000
Expiration dates, operating loss carryforwards | Dec. 31, 2037 |
Unrecognized tax benefits including interest and penalties | $ 971,000 |
Amount that would impact the effective tax rate, if recognized | 790,000 |
Canada [Member] |  |
Operating Loss Carryforward [Abstract] |  |
Operating loss carryforwards | $ 5,206,000 |
Expiration dates, operating loss carryforwards | Dec. 31, 2040 |
Internal Revenue Service (IRS) [Member] |  |
Open Tax Year [Abstract] |  |
Years open to audit under the statute of limitations | 2017 2018 2019 |
State and Local Jurisdiction [Member] |  |
Open Tax Year [Abstract] |  |
Years open to audit under the statute of limitations | 2014 2015 2016 2017 2018 2019 |

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- Definition This element represents the total of unrecognized tax benefits including interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties. + References No definition available. + Details
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