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Earnings Per Share/Unit (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations | $ 23,585 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 54,299 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 24,512 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 13,192 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 19,328 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 16,608 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 15,487 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 11,300 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | $ 115,588 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |  | $ 62,723 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |  | $ 40,313 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |
Net (income) attributable to noncontrolling interests in the Operating Partnership from continuing operations |  |  |  |  |  |  |  |  | (3,530)hiw_MinorityInterestInNetIncomeLossOperatingPartnershipsContinuingOperations |  | (2,185)hiw_MinorityInterestInNetIncomeLossOperatingPartnershipsContinuingOperations |  | (1,767)hiw_MinorityInterestInNetIncomeLossOperatingPartnershipsContinuingOperations |
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations | (314)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (291)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (438)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (423)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (356)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (203)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (187)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (203)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (1,466)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable |  | (949)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable |  | (786)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable |
Dividends on Preferred Stock | (626)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (2,507)us-gaap_PreferredStockDividendsIncomeStatementImpact |  | (2,508)us-gaap_PreferredStockDividendsIncomeStatementImpact |  | (2,508)us-gaap_PreferredStockDividendsIncomeStatementImpact |
Income from continuing operations available for common stockholders |  |  |  |  |  |  |  |  | 108,085 us-gaap_IncomeLossFromContinuingOperations |  | 57,081 us-gaap_IncomeLossFromContinuingOperations |  | 35,252 us-gaap_IncomeLossFromContinuingOperations |
Income from discontinued operations | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 384 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 12,362 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 39,460 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 14,092 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 2,460 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 384 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | 68,374 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | 43,922 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |
Net (income) attributable to noncontrolling interests in the Operating Partnership from discontinued operations |  |  |  |  |  |  |  |  | (12)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest |  | (2,506)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest |  | (2,087)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest |
Income from discontinued operations available for common stockholders |  |  |  |  |  |  |  |  | 372 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity |  | 65,868 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity |  | 41,835 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity |
Net income available for common stockholders | 21,916 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 51,708 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 22,705 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 12,128 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 29,729 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 53,349 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 27,522 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 12,349 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 108,457 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  | 122,949 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |  | 77,087 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings per Common Share - weighted average shares (in shares) |  |  |  |  |  |  |  |  | 90,743,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |  | 85,335,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |  | 75,811,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |
Earnings per Common Share - basic: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations available for common stockholders (in dollars per share) | $ 0.24 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.57 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.25 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.13 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.20 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.17 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.17 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 0.12 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare | $ 1.20 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |  | $ 0.67 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |  | $ 0.47 us-gaap_IncomeLossFromContinuingOperationsPerBasicShare |
Income from discontinued operations available for common stockholders (in dollars per share) |  |  |  |  | $ 0.13 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.44 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.16 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.03 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |  | $ 0.77 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |  | $ 0.55 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare |
Net income available for common stockholders (in dollars per share) | $ 0.24 us-gaap_EarningsPerShareBasic | $ 0.57 us-gaap_EarningsPerShareBasic | $ 0.25 us-gaap_EarningsPerShareBasic | $ 0.13 us-gaap_EarningsPerShareBasic | $ 0.33 us-gaap_EarningsPerShareBasic | $ 0.61 us-gaap_EarningsPerShareBasic | $ 0.33 us-gaap_EarningsPerShareBasic | $ 0.15 us-gaap_EarningsPerShareBasic | $ 1.20 us-gaap_EarningsPerShareBasic |  | $ 1.44 us-gaap_EarningsPerShareBasic |  | $ 1.02 us-gaap_EarningsPerShareBasic |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations | 23,585 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 54,299 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 24,512 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 13,192 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 19,328 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 16,608 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 15,487 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 11,300 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest | 115,588 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |  | 62,723 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |  | 40,313 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations | (314)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (291)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (438)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (423)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (356)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (203)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (187)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (203)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable | (1,466)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable |  | (949)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable |  | (786)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable |
Dividends on Preferred Stock | (626)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (627)us-gaap_PreferredStockDividendsIncomeStatementImpact | (2,507)us-gaap_PreferredStockDividendsIncomeStatementImpact |  | (2,508)us-gaap_PreferredStockDividendsIncomeStatementImpact |  | (2,508)us-gaap_PreferredStockDividendsIncomeStatementImpact |
Income from continuing operations available for common stockholders before net (income) attributable to noncontrolling interests in the Operating Partnership |  |  |  |  |  |  |  |  | 111,615 hiw_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterestDiluted |  | 59,266 hiw_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterestDiluted |  | 37,019 hiw_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterestDiluted |
Income from discontinued operations | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 384 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 12,362 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 39,460 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 14,092 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 2,460 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 384 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | 68,374 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |  | 43,922 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |
Net income available for common stockholders before net (income) attributable to noncontrolling interests in the Operating Partnership |  |  |  |  |  |  |  |  | 111,999 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted |  | 127,640 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted |  | 80,941 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings per Common Share - weighted average shares (in shares) |  |  |  |  |  |  |  |  | 90,743,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |  | 85,335,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |  | 75,811,000 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |
Stock options using the treasury method |  |  |  |  |  |  |  |  | 119,000 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements |  | 114,000 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements |  | 122,000 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements |
Noncontrolling interests Common Units |  |  |  |  |  |  |  |  | 2,938,000 hiw_WeightedAverageNoncontrollingInterestLimitedPartnershipUnitsOutstandingDiluted |  | 3,387,000 hiw_WeightedAverageNoncontrollingInterestLimitedPartnershipUnitsOutstandingDiluted |  | 3,745,000 hiw_WeightedAverageNoncontrollingInterestLimitedPartnershipUnitsOutstandingDiluted |
Denominator for diluted earnings per Common Share - adjusted weighted average shares and assumed conversions (in shares) (1) (2) |  |  |  |  |  |  |  |  | 93,800,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | [1],[2] | 88,836,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | [1],[2] | 79,678,000 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | [1],[2]
Earnings per Common Share - diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations available for common stockholders (in dollars per share) | $ 0.24 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.57 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.25 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.13 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.20 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.17 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.17 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 0.12 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare | $ 1.19 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |  | $ 0.67 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |  | $ 0.47 us-gaap_IncomeLossFromContinuingOperationsPerDilutedShare |
Income from discontinued operations available for common stockholders (in dollars per share) |  |  |  |  | $ 0.13 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.44 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.16 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.03 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |  | $ 0.77 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |  | $ 0.55 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare |
Net income available for common stockholders (in dollars per share) | $ 0.24 us-gaap_EarningsPerShareDiluted | $ 0.57 us-gaap_EarningsPerShareDiluted | $ 0.25 us-gaap_EarningsPerShareDiluted | $ 0.13 us-gaap_EarningsPerShareDiluted | $ 0.33 us-gaap_EarningsPerShareDiluted | $ 0.61 us-gaap_EarningsPerShareDiluted | $ 0.33 us-gaap_EarningsPerShareDiluted | $ 0.15 us-gaap_EarningsPerShareDiluted | $ 1.19 us-gaap_EarningsPerShareDiluted |  | $ 1.44 us-gaap_EarningsPerShareDiluted |  | $ 1.02 us-gaap_EarningsPerShareDiluted |
Earnings per Common Unit - diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of anti-dilutive options and warrants not included in earnings per share (in dollars per share) |  |  |  |  |  |  |  |  |  |  | 300,000 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount |  | 500,000 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount |
Highwoods Realty Limited Partnership [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations | 23,585 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 54,299 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 24,512 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 13,192 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 19,328 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 16,607 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 15,490 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 11,247 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 115,588 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 62,672 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 40,373 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations | (314)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (291)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (438)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (423)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (356)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (203)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (187)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (203)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (1,466)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (949)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (786)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Distributions on Preferred Units | (626)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (2,507)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (2,508)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (2,508)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Income from continuing operations available for common unitholders |  |  |  |  |  |  |  |  | 111,615 hiw_IncomeLossFromContinuingOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 59,215 hiw_IncomeLossFromContinuingOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 37,079 hiw_IncomeLossFromContinuingOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Income from discontinued operations available for common unitholders | 0 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 0 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 0 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 384 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 12,362 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 39,460 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 14,092 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 2,460 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 384 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 68,374 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 43,922 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Net income available for common unitholders | 22,645 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 53,381 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 23,447 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 12,526 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 30,707 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 55,237 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 28,768 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 12,877 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 111,999 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 127,589 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 81,001 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings per Common Unit - weighted average units (in shares) |  |  |  |  |  |  |  |  | 93,272,000 us-gaap_WeightedAverageLimitedPartnershipAndGeneralPartnershipUnitsOutstandingBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 88,313,000 us-gaap_WeightedAverageLimitedPartnershipAndGeneralPartnershipUnitsOutstandingBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 79,147,000 us-gaap_WeightedAverageLimitedPartnershipAndGeneralPartnershipUnitsOutstandingBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Earnings per Common Unit - basic: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations available for common unitholders (in dollars per share) | $ 0.24 us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.57 us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.25 us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.13 us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.20 us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.17 us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.17 us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.12 us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 1.20 us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 0.67 us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 0.47 us-gaap_IncomeLossFromContinuingOperationsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Income from discontinued operations available for common unitholders (in dollars per share) | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.01 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.13 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.44 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.16 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.03 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 0.77 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 0.55 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Net income available for common unitholders (in dollars per share) | $ 0.24 us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.57 us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.25 us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.14 us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.33 us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.61 us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.33 us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.15 us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 1.20 us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 1.44 us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 1.02 us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations | 23,585 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 54,299 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 24,512 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 13,192 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 19,328 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 16,607 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 15,490 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 11,247 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 115,588 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 62,672 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 40,373 us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Net (income) attributable to noncontrolling interests in consolidated affiliates from continuing operations | (314)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (291)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (438)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (423)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (356)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (203)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (187)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (203)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (1,466)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (949)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (786)us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Distributions on Preferred Units | (626)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (627)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | (2,507)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (2,508)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | (2,508)hiw_PreferredUnitDistributionsIncomeStatementImpact / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Income from continuing operations available for common unitholders |  |  |  |  |  |  |  |  | 111,615 hiw_IncomeLossFromContinuingOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 59,215 hiw_IncomeLossFromContinuingOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 37,079 hiw_IncomeLossFromContinuingOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Income from discontinued operations available for common unitholders | 0 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 0 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 0 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 384 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 12,362 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 39,460 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 14,092 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 2,460 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | 384 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 68,374 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 43,922 hiw_IncomeLossFromDiscontinuedOperationsAvailableForCommonUnitholders / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Net income available for common unitholders | $ 22,645 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 53,381 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 23,447 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 12,526 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 30,707 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 55,237 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 28,768 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 12,877 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 111,999 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 127,589 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 81,001 hiw_NetIncomeLossAvailableToCommonUnitholdersBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Denominator for basic earnings per Common Unit - weighted average units (in shares) |  |  |  |  |  |  |  |  | 93,272,000 us-gaap_WeightedAverageLimitedPartnershipAndGeneralPartnershipUnitsOutstandingBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 88,313,000 us-gaap_WeightedAverageLimitedPartnershipAndGeneralPartnershipUnitsOutstandingBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 79,147,000 us-gaap_WeightedAverageLimitedPartnershipAndGeneralPartnershipUnitsOutstandingBasic / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Stock options using the treasury method |  |  |  |  |  |  |  |  | 119,000 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 114,000 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 122,000 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Denominator for diluted earnings per Common Unit - adjusted weighted average units and assumed conversions (in shares) (1) (2) |  |  |  |  |  |  |  |  | 93,391,000 us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [1],[2] | 88,427,000 us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [1],[2] | 79,269,000 us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | [1],[2]
Earnings per Common Unit - diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations available for common unitholders (in dollars per share) | $ 0.24 us-gaap_IncomeLossFromContinuingOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.57 us-gaap_IncomeLossFromContinuingOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.25 us-gaap_IncomeLossFromContinuingOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.13 us-gaap_IncomeLossFromContinuingOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.20 us-gaap_IncomeLossFromContinuingOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.17 us-gaap_IncomeLossFromContinuingOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.17 us-gaap_IncomeLossFromContinuingOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.12 us-gaap_IncomeLossFromContinuingOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 1.20 us-gaap_IncomeLossFromContinuingOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 0.67 us-gaap_IncomeLossFromContinuingOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 0.47 us-gaap_IncomeLossFromContinuingOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Income from discontinued operations available for common unitholders (in dollars per share) | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted1 / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted1 / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted1 / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.01 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted1 / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.13 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted1 / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.44 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted1 / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.16 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted1 / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.03 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted1 / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.00 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted1 / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 0.77 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted1 / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 0.55 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted1 / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Net income available for common unitholders (in dollars per share) | $ 0.24 us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.57 us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.25 us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.14 us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.33 us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.61 us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.33 us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 0.15 us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember | $ 1.20 us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 1.44 us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | $ 1.02 us-gaap_NetIncomeLossNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
Number of anti-dilutive options and warrants not included in earnings per share (in dollars per share) |  |  |  |  |  |  |  |  |  |  | 300,000 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |  | 500,000 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount / dei_LegalEntityAxis = us-gaap_SubsidiariesMember |
[1] | Includes all unvested restricted stock where dividends on such restricted stock are non-forfeitable.
[2] | There were 0.3 million and 0.5 million options outstanding during the years ended December 31, 2013 and 2012, respectively, that were not included in the computation of diluted earnings per share because the impact of including such options would be anti-dilutive. There were no such options outstanding during the year ended December 31, 2014.

X
- Definition This element represents the income or loss from continuing operations attributable to the parent which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests, if any. + References No definition available. + Details
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Namespace Prefix: | hiw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition This element represents the income or loss from continuing operations attributable to the economic entity, for diluted earnings per share calculation, which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, and noncontrolling interest. + References No definition available. + Details
Name: | hiw_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterestDiluted
Namespace Prefix: | hiw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition This element represents the overall income (loss) from a disposal group apportioned to the parent that is classified as a component of the entity, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount which may be allocable to noncontrolling interests, if any. Includes the following (net of tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal. + References No definition available. + Details
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Namespace Prefix: | hiw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of net income (loss) in continuing operations for the period allocated to noncontrolling partners in the operating partnership included in the entity's consolidated financial statements. + References No definition available. + Details
Name: | hiw_MinorityInterestInNetIncomeLossOperatingPartnershipsContinuingOperations
Namespace Prefix: | hiw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Net income after adjustments for dividends on preferred units (declared in the period). + References No definition available. + Details
Name: | hiw_NetIncomeLossAvailableToCommonUnitholdersBasic
Namespace Prefix: | hiw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The amount of preferred unit distributions that is an adjustment to net income apportioned to common unitholders. + References No definition available. + Details
Name: | hiw_PreferredUnitDistributionsIncomeStatementImpact
Namespace Prefix: | hiw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Weighted average number of noncontrolling interests limited partnership units outstanding determined by relating the portion of time within a reporting period that limited partnership units have been outstanding to the total time in that period. Used in the calculation of diluted net income or loss per limited partnership unit. + References No definition available. + Details
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Namespace Prefix: | hiw_
Data Type: | xbrli:sharesItemType
Balance Type: | na
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- Definition The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 + Details
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- Definition Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e957-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.12) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 13 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.14) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Article 5 + Details
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