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STOCKHOLDERS' EQUITY (Details) (USD $)
 3 Months Ended 12 Months Ended 3 Months Ended
Sep. 30, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2012
Class of Stock [Line Items]          
Common stock dividend paid in cash (in dollars per share) $ 1.00us-gaap_CommonStockDividendsPerShareCashPaid        
Aggregate dividends paid on common Stock   $ 27,077,000us-gaap_DividendsCommonStockCash $ 4,787,000us-gaap_DividendsCommonStockCash $ 21,721,000us-gaap_DividendsCommonStockCash  
Class A Common Stock [Member]          
Class of Stock [Line Items]          
Preferential dividend rate of common stock of dividends paid on Class A common stock (in hundredths)   105.00%hvt_PreferentialDividendRateOfDividendsPaid
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember		      
Percentage of number of directors elected under Class A common stock voting right (in hundredths)   75.00%hvt_PercentageOfNumberOfDirectorsElectedUnderCommonStockVotingRight
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember		      
Number of votes per share   10hvt_NumberOfVotesPerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember		      
Conversion basis   1-for-1 basis      
Common stock dividend paid in cash (in dollars per share)         $ 0.95us-gaap_CommonStockDividendsPerShareCashPaid
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember
Aggregate dividends paid on common Stock   $ 2,703,000us-gaap_DividendsCommonStockCash
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember		 $ 566,000us-gaap_DividendsCommonStockCash
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember		 $ 2,963,000us-gaap_DividendsCommonStockCash
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonClassAMember