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Investments (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Investments [Abstract]
Certificates of deposit with remaining maturities less than one year	$ 6,500,000	$ 7,250,000
Certificates of deposit with remaining maturities greater than one year	$ 1,250,000

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- Definition

Short-term investment available at banks and savings and loan institutions where a customer agrees to lend money to the institution for a certain amount of time and is paid a predetermined rate of interest. Certificates of deposit (CD) are typically Federal Deposit Insurance Corporation (FDIC) insured.

+ References

No definition available.

+ Details

Name:	hvt_CertificatesOfDepositCurrent
Namespace Prefix:	hvt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Definition

Long-term investment available at banks and savings and loan institutions where a customer agrees to lend money to the institution for a certain amount of time and is paid a predetermined rate of interest. Certificates of deposit (CD) are typically Federal Deposit Insurance Corporation (FDIC) insured.

+ References

No definition available.

+ Details

Name:	hvt_CertificatesOfDepositNoncurrent
Namespace Prefix:	hvt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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