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Description Of Business And Segment Reporting (Reconciliation To Net Income Attributable To Common Shareholders) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |
Segment operating income (loss) | $ (41,793) | $ (61,313) | $ 9,123
Depreciation and amortization expense | (22,746) | (22,317) | (22,747)
General and administrative expense | (25,100) | (16,998) | (25,395)
Equity earnings of unconsolidated joint ventures | 258 | (449) | 792
Gain (loss) on sale of assets | 92,219 | (1) | (2)
Other income (expense) | 3,762 | 293 | 325
Income (loss) before income taxes | 40,758 | (70,824) | 2,334
Operating Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Segment operating income (loss) | (23,992) | (47,519) | 28,470
Depreciation and amortization expense | (21,514) | (21,347) | (22,333)
Unallocated Corporate Expense [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization expense | (1,232) | (970) | (414)
General and administrative expense | (16,569) | (12,824) | (18,933)
Interest expense, net | (13,688) | (9,354) | (7,904)
Equity earnings of unconsolidated joint ventures | 258 | (449) | 792
Gain (loss) on sale of assets | 92,219 | (1) | (2)
Other income (expense) | 3,762 | 293 | 325
Income (loss) before income taxes | $ 40,758 | $ (70,824) | $ 2,334

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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2443-110228 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 + Details
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