Notes Payable, Interest Expense and Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2012

Notes Payable, Commitments and Contingencies [Abstract]

Summary of terms of notes payable [table text block]

The following table summarizes the terms and amounts of the Company’s notes payable at September 30, 2012 and December 31, 2011 ($ in thousands):

Description	Interest Rate		Term/Amortization Period (Years)	Maturity	September 30, 2012		December 31, 2011
Terminus 100 mortgage note	5.25	%	12/30	1/1/2023	$	136,651	$	138,194
The American Cancer Society Center mortgage note	6.45	%	10/30	9/1/2017	134,615		135,650
191 Peachtree Tower mortgage note (interest only until May 1, 2016) (see discussion below)	3.35	%	6.5/30	10/1/2018	100,000		—
Credit Facility, unsecured (see discussion below)	1.71	%	4/N/A	2/28/2016	93,500		198,250
Meridian Mark Plaza mortgage note	6.00	%	10/30	8/1/2020	26,286		26,554
100/200 North Point Center East mortgage note (see discussion below)	5.39	%	5/30	6/1/2012	—		24,478
The Points at Waterview mortgage note	5.66	%	10/25	1/1/2016	15,775		16,135
Mahan Village construction facility	1.86	%	3/N/A	9/12/2014	11,633		1
Callaway Gardens	4.13	%	N/A	11/18/2013	170		180
					$	518,630	$	539,442

Credit Facility - Interest Rate Spreads and Facility Fee [table text block]

The pricing spreads and the Facility Fee under the Credit Facility are as follows:

Leverage Ratio	Applicable % Spread for LIBOR	Applicable % Spread for Base Rate	Annual Facility Fee %
≤ 40%	1.50%	0.50%	0.20%
>40% but ≤ 50%	1.60%	0.60%	0.25%
>50% but ≤ 55%	1.90%	0.90%	0.35%
>55% but ≤ 60%	2.10%	1.10%	0.40%

Summary of interest [table text block]

For the three and nine months ended September 30, 2012 and 2011, interest expense was as follows (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Total interest incurred	$	6,337		$	6,838		$	19,395		$	21,740
Interest capitalized	(544		)	(237		)	(1,459		)	(237		)
Total interest expense	$	5,793		$	6,601		$	17,936		$	21,503