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Reportable Segment Information (Business Segment Information) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 28, 2019 USD ($) segment | Dec. 29, 2018 USD ($) | Dec. 30, 2017 USD ($)
Segment Reporting Information [Line Items] |  |  |
Number of business segments | segment | 2 |  |
Net sales | $ 2,246,947 | $ 2,257,895 | $ 2,175,882
Operating income | 151,342 | 128,173 | 76,690
Interest expense, net | 8,628 | 9,448 | 6,078
Total | 142,714 | 118,725 | 70,612
Depreciation and Amortization Expense: | 77,427 | 74,788 | 72,872
Capital Expenditures (including capitalized software): | 66,885 | 63,696 | 127,391
Identifiable Assets: | 1,452,512 | 1,401,844 | 1,391,550
Restructuring and impairment charges | 2,371 | 15,725 | 37,416
Office Furniture |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring and impairment charges | 2,400 | 16,400 | 32,500
Hearth Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Restructuring and impairment charges |  | 1,200 | 4,900
Operating | Office Furniture |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 1,697,186 | 1,706,092 | 1,660,723
Operating profit | 103,894 | 75,965 | 50,176
Depreciation and Amortization Expense: | 44,887 | 44,303 | 48,435
Capital Expenditures (including capitalized software): | 41,137 | 47,860 | 79,458
Identifiable Assets: | 874,913 | 797,574 | 821,767
Operating | Hearth Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 549,761 | 551,803 | 515,159
Operating profit | 94,329 | 91,367 | 83,649
Depreciation and Amortization Expense: | 8,884 | 8,171 | 10,109
Capital Expenditures (including capitalized software): | 12,225 | 8,854 | 17,356
Identifiable Assets: | 364,653 | 352,060 | 347,189
General corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
General corporate | (46,881) | (39,159) | (57,135)
Depreciation and Amortization Expense: | 23,656 | 22,314 | 14,328
Capital Expenditures (including capitalized software): | 13,523 | 6,982 | 30,577
Identifiable Assets: | $ 212,946 | $ 252,210 | $ 222,594

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