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Real Estate Assets Real Estate Assets (Tables) - Pro Forma 2015 Acquisitions [Member] | 9 Months Ended
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Sep. 30, 2016
Business Acquisition [Line Items] |
Schedule of Business Acquisitions, Purchase Price Allocation [Table Text Block] | The following table sets forth a summary of the fair value of the major assets acquired and liabilities assumed relating to the acquisition of two buildings in Atlanta, GA encompassing 896,000 rentable square feet during the third quarter of 2015:
| Total Purchase Price Allocation
Real estate assets | $ | 275,639 |
Acquisition-related intangible assets (in deferred leasing costs) | 23,722 |
Acquisition-related below market lease liabilities (in accounts payable, accrued expenses and other liabilities) | (9,076 | )
Total allocation | $ | 290,285 |
Highwoods Properties, Inc. [Member] |
Business Acquisition [Line Items] |
Schedule of Business Acquisitions, Pro Forma [Table Text Block] | The following table sets forth the Company's revenues and net income, adjusted for interest expense, straight-line rental income, depreciation and amortization related to purchase price allocations and acquisition costs, assuming the above-referenced acquisition of two buildings in Atlanta, GA during the third quarter of 2015 had been completed as of January 1, 2014:
| Three Months Ended September 30, 2015 |  | Nine Months Ended September 30, 2015
Pro forma revenues | $ | 157,618 |  |  | $ | 465,476 |
Pro forma net income | $ | 33,354 |  |  | $ | 80,647 |
Pro forma net income available for common stockholders | $ | 31,486 |  |  | $ | 75,524 |
Pro forma earnings per share - basic | $ | 0.33 |  |  | $ | 0.80 |
Pro forma earnings per share - diluted | $ | 0.33 |  |  | $ | 0.80 |

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- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1486-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463 + Details
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