Segment Information (Tables)

3 Months Ended

Mar. 31, 2012

Segment Reporting [Abstract]

Segment Information [Table Text Block]

	Three Months Ended March 31,
	2012		2011
Rental and Other Revenues: (1)
Office:
Atlanta, GA	$	15,785	$	11,902
Greenville, SC	3,504		3,505
Kansas City, MO	3,762		3,657
Memphis, TN	10,139		10,103
Nashville, TN	15,603		14,616
Orlando, FL	2,688		2,318
Piedmont Triad, NC	5,081		5,364
Pittsburgh, PA	9,087		—
Raleigh, NC	19,781		19,322
Richmond, VA	11,511		11,379
Tampa, FL	17,138		16,376
Total Office Segment	114,079		98,542
Industrial:
Atlanta, GA	3,774		3,934
Piedmont Triad, NC	3,165		2,977
Total Industrial Segment	6,939		6,911
Retail:
Kansas City, MO	8,925		8,898
Total Retail Segment	8,925		8,898
Total Rental and Other Revenues	$	129,943	$	114,351

14. Segment Information - Continued

	Three Months Ended March 31,
	2012			2011
Net Operating Income: (1)
Office:
Atlanta, GA	$	10,396		$	7,493
Greenville, SC	2,133			2,075
Kansas City, MO	2,362			2,114
Memphis, TN	6,103			5,759
Nashville, TN	10,603			9,651
Orlando, FL	1,416			1,166
Piedmont Triad, NC	3,233			3,600
Pittsburgh, PA	4,282			—
Raleigh, NC	13,854			13,219
Richmond, VA	7,884			7,861
Tampa, FL	10,840			10,130
Total Office Segment	73,106			63,068
Industrial:
Atlanta, GA	2,889			2,839
Piedmont Triad, NC	2,288			2,223
Total Industrial Segment	5,177			5,062
Retail:
Kansas City, MO	5,536			5,287
Total Retail Segment	5,536			5,287
Total Net Operating Income	83,819			73,417
Reconciliation to income from continuing operations before disposition of condominiums and equity in earnings/(losses) of unconsolidated affiliates:
Depreciation and amortization	(38,362		)	(33,556		)
General and administrative expense	(9,673		)	(7,793		)
Interest expense	(24,802		)	(23,543		)
Other income	2,230			1,873
Income from continuing operations before disposition of condominiums and equity in earnings/(losses) of unconsolidated affiliates	$	13,212		$	10,398

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(1) Net of discontinued operations.