MORTGAGE NOTES PAYABLE AND UNSECURED TERM LOAN PAYABLE (Tables)

12 Months Ended

Dec. 31, 2011

MORTGAGE NOTES PAYABLE [Abstract]

Mortgage notes payable

A summary of Mortgage Notes Payable follows:

Property	Interest Rate	Monthly P&I Payment	Maturity Date	Carrying Amount of Securing Real Estate at December 31, 2011	Balance at December 31,
					2011	2010
				(In thousands)
Butterfield Trail, Glenmont I & II, Interstate I, II & III,    Rojas, Stemmons Circle, Venture and    West Loop I & II	7.25%	$    325,263	Repaid	$                     -	-	36,171
America Plaza, Central Green and World Houston 3-9	7.92%	191,519	Repaid	-	-	22,993
University Business Center (120 & 130 Cremona)	6.43%	81,856	05/15/12	8,513	2,193	3,006
University Business Center (125 & 175 Cremona)	7.98%	88,607	06/01/12	11,685	8,771	9,119
Oak Creek Distribution Center IV	5.68%	31,253	06/01/12	6,022	3,506	3,676
51st Avenue, Airport Distribution, Broadway I, III & IV,    Chestnut, Interchange Business Park, Main Street,    North Stemmons I land, Southpark, Southpointe,    and World Houston 12 & 13	6.86%	279,149	09/01/12	36,204	32,204	33,304
Interstate Distribution Center - Jacksonville	5.64%	31,645	01/01/13	6,115	4,234	4,367
35th Avenue, Beltway I, Broadway V, Lockwood,    Northwest Point, Sunbelt, Techway Southwest I    and World Houston 10, 11 & 14	4.75%	259,403	09/05/13	39,023	35,912	37,283
Airport Commerce Center I & II, Interchange Park, Ridge    Creek Distribution Center I, Southridge XII, Waterford    Distribution Center and World Houston 24, 25 & 27	5.75%	414,229	01/05/14	66,489	54,001	55,810
Kyrene Distribution Center I	9.00%	11,246	07/01/14	2,171	310	412
Americas Ten I, Kirby, Palm River North I, II & III,    Shady Trail, Westlake I & II and World Houston 17	5.68%	175,479	10/10/14	25,367	27,996	28,496
Beltway II, III & IV, Commerce Park 1, Eastlake,    Fairgrounds I-IV, Nations Ford I-IV, Techway    Southwest III, Wetmore I-IV and    World Houston 15 & 22	5.50%	536,552	04/05/15	68,917	67,188	69,844
Country Club I, Lake Pointe, Techway Southwest II and    World Houston 19 & 20	4.98%	256,952	12/05/15	21,108	31,039	32,536
Huntwood and Wiegman Distribution Centers	5.68%	265,275	09/05/16	21,950	31,748	33,087
Alamo Downs, Arion 1-15 & 17, Rampart I, II & III,    Santan 10 and World Houston 16	5.97%	557,467	11/05/16	56,429	65,961	68,626
Arion 16, Broadway VI, Chino, East University I & II,    Northpark I-IV, Santan 10 II, South 55th Avenue and    World Houston 1 & 2, 21 & 23	5.57%	518,885	09/05/17	56,848	63,093	65,718
Dominguez, Industry I & III, Kingsview, Shaw, Walnut    and Washington (1)	7.50%	539,747	05/05/19	49,588	62,875	64,567
Blue Heron Distribution Center II	5.39%	16,176	02/29/20	4,701	1,288	1,409
40th Avenue, Beltway V, Centennial Park, Executive    Airport, Ocean View, Techway Southwest IV,    Wetmore V-VIII and World Houston 26, 28, 29 & 30	4.39%	463,778	01/05/21	77,986	71,837	74,000
America Plaza, Central Green, Glenmont I & II,    Interstate I, II & III, Rojas, Stemmons Circle, Venture,    West Loop I & II and World Houston 3-9	4.75%	420,045	06/05/21	47,250	64,014	-
				$          606,366	628,170	644,424

(1)   This mortgage loan has a recourse liability of $5 million which will be released based on the secured properties generating certain base rent amounts.

Principal payments due during the next five years

Principal payments on long-term debt, including mortgage notes payable and unsecured term loan payable, due during the next five years as of December 31, 2011 are as follows:

Years Ending December 31,	(In thousands)
2012	$          68,673
2013	60,164
2014	96,993
2015	100,279
2016	90,626