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BENEFIT PLANS, Other Plans (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Other Plans [Abstract] |  |  |
Employer contribution matching, first 1% of employee contribution | 100.00% |  |
Employer contribution percent of employee contribution, 100% matching | 1.00% |  |
Employer contribution matching, next 5% of employee contribution | 50.00% |  |
Employer contribution percent of employee contribution, 50% matching | 5.00% |  |
Expense incurred as matching contribution | $ 3,932 | $ 3,884 | $ 3,661

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- Definition Percentage of employees' first tier gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | hvt_DefinedContributionPlanEmployerMatchingContributionPercentOfEmployeesGrossPayFirstTier
Namespace Prefix: | hvt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of employees' second tier of gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | hvt_DefinedContributionPlanEmployerMatchingContributionPercentOfEmployeesGrossPaySecondTier
Namespace Prefix: | hvt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage employer matches of the employee's contribution that is matched, first tier of percentage contribution. + References No definition available. + Details
Name: | hvt_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchOfFirstPercentTier
Namespace Prefix: | hvt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage employer matches of the employee's contribution that is matched, second tier of percentage contribution. + References No definition available. + Details
Name: | hvt_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchOfSecondTier
Namespace Prefix: | hvt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | hvt_OtherPlansAbstract
Namespace Prefix: | hvt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration