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Schedule II (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Allowance for doubtful accounts, beginning balance | $ 3,013 us-gaap_ValuationAllowancesAndReservesBalance | $ 3,843 us-gaap_ValuationAllowancesAndReservesBalance | $ 4,903 us-gaap_ValuationAllowancesAndReservesBalance
Additions to allowance for doubtful accounts | 2,619 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense | 1,516 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense | 2,335 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Deductions to allowance for doubtful accounts | (3,443)us-gaap_ValuationAllowancesAndReservesDeductions | (2,346)us-gaap_ValuationAllowancesAndReservesDeductions | (3,395)us-gaap_ValuationAllowancesAndReservesDeductions
Allowance for doubtful accounts, ending balance | 2,189 us-gaap_ValuationAllowancesAndReservesBalance | 3,013 us-gaap_ValuationAllowancesAndReservesBalance | 3,843 us-gaap_ValuationAllowancesAndReservesBalance
Allowance for Doubtful Accounts - Straight Line Rent [Member] |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Allowance for doubtful accounts, beginning balance | 1,063 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsStraightLineRentMember | 813 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsStraightLineRentMember | 1,294 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsStraightLineRentMember
Additions to allowance for doubtful accounts | 1,277 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsStraightLineRentMember | 545 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsStraightLineRentMember | 1,382 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsStraightLineRentMember
Deductions to allowance for doubtful accounts | (1,740)us-gaap_ValuationAllowancesAndReservesDeductions / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsStraightLineRentMember | (295)us-gaap_ValuationAllowancesAndReservesDeductions / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsStraightLineRentMember | (1,863)us-gaap_ValuationAllowancesAndReservesDeductions / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsStraightLineRentMember
Allowance for doubtful accounts, ending balance | 600 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsStraightLineRentMember | 1,063 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsStraightLineRentMember | 813 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsStraightLineRentMember
Allowance for Doubtful Accounts - Accounts Receivable [Member] |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Allowance for doubtful accounts, beginning balance | 1,648 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsAccountsReceivableMember | 2,848 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsAccountsReceivableMember | 3,548 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsAccountsReceivableMember
Additions to allowance for doubtful accounts | 1,342 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsAccountsReceivableMember | 851 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsAccountsReceivableMember | 767 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsAccountsReceivableMember
Deductions to allowance for doubtful accounts | (1,676)us-gaap_ValuationAllowancesAndReservesDeductions / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsAccountsReceivableMember | (2,051)us-gaap_ValuationAllowancesAndReservesDeductions / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsAccountsReceivableMember | (1,467)us-gaap_ValuationAllowancesAndReservesDeductions / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsAccountsReceivableMember
Allowance for doubtful accounts, ending balance | 1,314 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsAccountsReceivableMember | 1,648 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsAccountsReceivableMember | 2,848 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsAccountsReceivableMember
Allowance for Doubtful Accounts - Notes Receivable [Member] |  |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Allowance for doubtful accounts, beginning balance | 302 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsNotesReceivableMember | 182 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsNotesReceivableMember | 61 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsNotesReceivableMember
Additions to allowance for doubtful accounts | 0 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsNotesReceivableMember | 120 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsNotesReceivableMember | 186 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsNotesReceivableMember
Deductions to allowance for doubtful accounts | (27)us-gaap_ValuationAllowancesAndReservesDeductions / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsNotesReceivableMember | 0 us-gaap_ValuationAllowancesAndReservesDeductions / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsNotesReceivableMember | (65)us-gaap_ValuationAllowancesAndReservesDeductions / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsNotesReceivableMember
Allowance for doubtful accounts, ending balance | $ 275 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsNotesReceivableMember | $ 302 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsNotesReceivableMember | $ 182 us-gaap_ValuationAllowancesAndReservesBalance / us-gaap_ValuationAllowancesAndReservesTypeAxis = hiw_AllowanceForDoubtfulAccountsNotesReceivableMember

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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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- Definition Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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