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Leases - Cash Paid for Amounts Included in the Measurements of Lease Liabilities and Leased Assets (Details) $ in Thousands | 3 Months Ended
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Mar. 30, 2019 USD ($)
Cash paid for amounts included in the measurements of lease liabilities |
Operating cash flows from operating / finance leases | $ 6,411
Financing cash flows from finance leases | 4
Leased assets obtained in exchange for new operating / finance lease liabilities | $ 4,652

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- Definition Cash Flow, Lessee [Abstract] + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition RIght-of-Use Asset Obtained in Exchange for Operating Lease Liability and Financing Lease LIability + References No definition available. + Details
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Namespace Prefix: | hni_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of cash outflow for principal payment on finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918643-209977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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Balance Type: | credit
Period Type: | duration