XML 35 R66.htm IDEA: XBRL DOCUMENT
v3.19.3

Income Taxes Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 30, 2019 | Sep. 28, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Reclassification of Stranded Tax Effects (ASU 2018-02) |  | $ 0
Retained Earnings |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Reclassification of Stranded Tax Effects (ASU 2018-02) | $ 700 | $ 739

X
- Definition Tax Cuts And Jobs Act, Reclassification From AOCI To Retained Earnings, Tax Effect + References No definition available. + Details
Name: | hni_TaxCutsAndJobsActReclassificationFromAOCIToRetainedEarningsTaxEffect
Namespace Prefix: | hni_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_RetainedEarningsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |