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Real Estate Assets Real Estate Assets Pro Forma (Details) - Pro Forma 2015 Acquisitions [Member] $ / shares in Units, ft² in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 USD ($) ft² property $ / shares | Sep. 30, 2015 USD ($) ft² property $ / shares
Business Acquisition [Line Items] |  |
Number of buildings | property | 2 | 2
Rentable square feet of acquisition (in sqft) | ft² | 896 | 896
Business Combination, Purchase Price Allocation [Abstract] |  |
Real estate assets | $ 275,639 | $ 275,639
Acquisition-related intangible assets (in deferred leasing costs) | 23,722 | 23,722
Acquisition-related below market lease liabilities (in accounts payable, accrued expenses and other liabilities) | (9,076) | (9,076)
Total allocation | $ 290,285 | 290,285
Pro forma assumption date of acquisition | Jan. 01, 2014 |
Highwoods Properties, Inc. [Member] |  |
Business Acquisition, Pro Forma Information [Abstract] |  |
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 | $ / shares | $ 0.33 | $ 0.80
Pro forma earnings per share - diluted | $ / shares | $ 0.33 | $ 0.80

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