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Other Liabilities (Summary Of Other Liabilities Including Pension) (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021 | Aug. 29, 2014
--- | --- | --- | ---
Other Liabilities [Abstract] |  |  |
Lease liability | $ 5,900 |  |
Liability for demolition costs | 2,827 | $ 2,783 |
Accrued pension | 684 | 684 |
Security deposit payable | 70 | 69 |
Finance lease liabilities | 37 | 40 |
Other | 41 | 43 |
Other current liabilities | 9,559 | 3,619 |
Lease make-good provision | 7,999 | 7,766 |
Accrued pension | 3,490 | 3,605 | $ 7,500
Deferred rent liability | 3,410 | 3,930 |
Environmental reserve | 1,656 | 1,656 |
Lease liability |  | 5,900 |
Acquired leases | 19 | 21 |
Finance lease liabilities | 20 | 28 |
Other non-current liabilities | $ 16,594 | $ 22,906 |

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- Definition Lease Make-good Provision + References No definition available. + Details
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- Definition Amount of liability, recognized in statement of financial position, for defined benefit pension plan, classified as current. Excludes other postretirement benefit plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123453770&loc=d3e1703-114919 Reference 3: 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(20)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123453770&loc=d3e1731-114919 + Details
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