SCHEDULE III (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	$ 499,793	[1],[2]
Initial Cost to the Company [Abstract]
Land	330,032	[1],[2]
Buildings and Improvements	919,699	[1],[2]
Costs Capitalized Subsequent to Acquisition	677,595	[1],[2]
Gross Amount at which Carried at Close of Period [Abstract]
Land	338,864	[1],[2]
Buildings and Improvements	1,588,462	[1],[2]
Total	1,927,326	[1],[2],[3]	1,768,032	[3]	1,662,593	[3]	1,521,177
Accumulated Depreciation	550,113	[1],[2]	496,247		451,805		403,187
Year Constructed	1998
Industrial [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	498,595	[4]
Initial Cost to the Company [Abstract]
Land	263,390	[4]
Buildings and Improvements	919,699	[4]
Costs Capitalized Subsequent to Acquisition	595,470	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	265,871	[4]
Buildings and Improvements	1,512,688	[4]
Total	1,778,559	[4]
Accumulated Depreciation	550,071	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | 56th Street Commerce Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	843	[4]
Buildings and Improvements	3,567	[4]
Costs Capitalized Subsequent to Acquisition	3,862	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	843	[4]
Buildings and Improvements	7,429	[4]
Total	8,272	[4]
Accumulated Depreciation	4,984	[4]
Year Acquired	1993	[4]
Year Constructed	1981/86/97	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Jetport Commerce Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,575	[4]
Buildings and Improvements	6,591	[4]
Costs Capitalized Subsequent to Acquisition	4,473	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,575	[4]
Buildings and Improvements	11,064	[4]
Total	12,639	[4]
Accumulated Depreciation	6,796	[4]
Year Acquired	1993-99	[4]
Year Constructed	1974-85	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Westport Commerce Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	980	[4]
Buildings and Improvements	3,800	[4]
Costs Capitalized Subsequent to Acquisition	2,447	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	980	[4]
Buildings and Improvements	6,247	[4]
Total	7,227	[4]
Accumulated Depreciation	3,926	[4]
Year Acquired	1994	[4]
Year Constructed	1983/87	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Benjamin Distribution Center I and II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	843	[4]
Buildings and Improvements	3,963	[4]
Costs Capitalized Subsequent to Acquisition	1,355	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	883	[4]
Buildings and Improvements	5,278	[4]
Total	6,161	[4]
Accumulated Depreciation	3,156	[4]
Year Acquired	1997	[4]
Year Constructed	1996	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Benjamin Distribution Center III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	407	[4]
Buildings and Improvements	1,503	[4]
Costs Capitalized Subsequent to Acquisition	458	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	407	[4]
Buildings and Improvements	1,961	[4]
Total	2,368	[4]
Accumulated Depreciation	1,414	[4]
Year Acquired	1999	[4]
Year Constructed	1988	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Palm River Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,190	[4]
Buildings and Improvements	4,625	[4]
Costs Capitalized Subsequent to Acquisition	2,208	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,190	[4]
Buildings and Improvements	6,833	[4]
Total	8,023	[4]
Accumulated Depreciation	3,844	[4]
Year Acquired	1997/98	[4]
Year Constructed	1990/97/98	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Palm River North I and III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	5,019	[4],[5]
Initial Cost to the Company [Abstract]
Land	1,005	[4],[5]
Buildings and Improvements	4,688	[4],[5]
Costs Capitalized Subsequent to Acquisition	2,245	[4],[5]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,005	[4],[5]
Buildings and Improvements	6,933	[4],[5]
Total	7,938	[4],[5]
Accumulated Depreciation	3,498	[4],[5]
Year Acquired	1998	[4],[5]
Year Constructed	2000	[4],[5]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Palm River North II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,605	[4],[5]
Initial Cost to the Company [Abstract]
Land	634	[4],[5]
Buildings and Improvements	4,418	[4],[5]
Costs Capitalized Subsequent to Acquisition	381	[4],[5]
Gross Amount at which Carried at Close of Period [Abstract]
Land	634	[4],[5]
Buildings and Improvements	4,799	[4],[5]
Total	5,433	[4],[5]
Accumulated Depreciation	2,908	[4],[5]
Year Acquired	1997/98	[4],[5]
Year Constructed	1999	[4],[5]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Palm River South I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	655	[4]
Buildings and Improvements	3,187	[4]
Costs Capitalized Subsequent to Acquisition	557	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	655	[4]
Buildings and Improvements	3,744	[4]
Total	4,399	[4]
Accumulated Depreciation	1,408	[4]
Year Acquired	2000	[4]
Year Constructed	2005	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Palm River South II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	655	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	4,360	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	655	[4]
Buildings and Improvements	4,360	[4]
Total	5,015	[4]
Accumulated Depreciation	1,743	[4]
Year Acquired	2000	[4]
Year Constructed	2006	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Walden Distribution Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	337	[4]
Buildings and Improvements	3,318	[4]
Costs Capitalized Subsequent to Acquisition	447	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	337	[4]
Buildings and Improvements	3,765	[4]
Total	4,102	[4]
Accumulated Depreciation	1,720	[4]
Year Acquired	1997/98	[4]
Year Constructed	2001	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Walden Distribution Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	465	[4]
Buildings and Improvements	3,738	[4]
Costs Capitalized Subsequent to Acquisition	932	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	465	[4]
Buildings and Improvements	4,670	[4]
Total	5,135	[4]
Accumulated Depreciation	2,256	[4]
Year Acquired	1998	[4]
Year Constructed	1998	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Oak Creek Distribution Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,109	[4]
Buildings and Improvements	6,126	[4]
Costs Capitalized Subsequent to Acquisition	1,364	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,109	[4]
Buildings and Improvements	7,490	[4]
Total	8,599	[4]
Accumulated Depreciation	2,961	[4]
Year Acquired	1998	[4]
Year Constructed	1998	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Oak Creek Distribution Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	647	[4]
Buildings and Improvements	3,603	[4]
Costs Capitalized Subsequent to Acquisition	1,046	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	647	[4]
Buildings and Improvements	4,649	[4]
Total	5,296	[4]
Accumulated Depreciation	1,799	[4]
Year Acquired	2003	[4]
Year Constructed	2001	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Oak Creek Distribution Center III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	439	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	3,178	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	556	[4]
Buildings and Improvements	3,061	[4]
Total	3,617	[4]
Accumulated Depreciation	861	[4]
Year Acquired	2005	[4]
Year Constructed	2007	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Oak Creek Distribution Center IV [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	805	[4]
Buildings and Improvements	6,472	[4]
Costs Capitalized Subsequent to Acquisition	578	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	805	[4]
Buildings and Improvements	7,050	[4]
Total	7,855	[4]
Accumulated Depreciation	1,857	[4]
Year Acquired	2005	[4]
Year Constructed	2001	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Oak Creek Distribution Center V [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	724	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	5,815	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	916	[4]
Buildings and Improvements	5,623	[4]
Total	6,539	[4]
Accumulated Depreciation	1,593	[4]
Year Acquired	2005	[4]
Year Constructed	2007	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Oak Creek Distribution Center VI [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	642	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	5,039	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	812	[4]
Buildings and Improvements	4,869	[4]
Total	5,681	[4]
Accumulated Depreciation	1,002	[4]
Year Acquired	2005	[4]
Year Constructed	2008	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Oak Creek Distribution Center IX [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	618	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	4,918	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	781	[4]
Buildings and Improvements	4,755	[4]
Total	5,536	[4]
Accumulated Depreciation	729	[4]
Year Acquired	2005	[4]
Year Constructed	2009	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Oak Creek Distribution Center A [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	185	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	1,428	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	185	[4]
Buildings and Improvements	1,428	[4]
Total	1,613	[4]
Accumulated Depreciation	280	[4]
Year Acquired	2005	[4]
Year Constructed	2008	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Oak Creek Distribution Center B [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	227	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	1,485	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	227	[4]
Buildings and Improvements	1,485	[4]
Total	1,712	[4]
Accumulated Depreciation	277	[4]
Year Acquired	2005	[4]
Year Constructed	2008	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Airport Commerce Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,257	[4]
Buildings and Improvements	4,012	[4]
Costs Capitalized Subsequent to Acquisition	825	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,257	[4]
Buildings and Improvements	4,837	[4]
Total	6,094	[4]
Accumulated Depreciation	2,204	[4]
Year Acquired	1998	[4]
Year Constructed	1998	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Westlake Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	6,394	[4],[5]
Initial Cost to the Company [Abstract]
Land	1,333	[4],[5]
Buildings and Improvements	6,998	[4],[5]
Costs Capitalized Subsequent to Acquisition	1,638	[4],[5]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,333	[4],[5]
Buildings and Improvements	8,636	[4],[5]
Total	9,969	[4],[5]
Accumulated Depreciation	4,309	[4],[5]
Year Acquired	1998	[4],[5]
Year Constructed	1998/99	[4],[5]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Expressway Commerce Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	915	[4]
Buildings and Improvements	5,346	[4]
Costs Capitalized Subsequent to Acquisition	1,026	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	915	[4]
Buildings and Improvements	6,372	[4]
Total	7,287	[4]
Accumulated Depreciation	2,537	[4]
Year Acquired	2002	[4]
Year Constructed	2004	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Expressway Commerce Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,013	[4]
Buildings and Improvements	3,247	[4]
Costs Capitalized Subsequent to Acquisition	367	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,013	[4]
Buildings and Improvements	3,614	[4]
Total	4,627	[4]
Accumulated Depreciation	1,535	[4]
Year Acquired	2003	[4]
Year Constructed	2001	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Silo Bend Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	4,131	[4]
Buildings and Improvements	27,497	[4]
Costs Capitalized Subsequent to Acquisition	533	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	4,131	[4]
Buildings and Improvements	28,030	[4]
Total	32,161	[4]
Accumulated Depreciation	2,337	[4]
Year Acquired	2011	[4]
Year Constructed	1987/90	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Tampa East Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	791	[4]
Buildings and Improvements	4,758	[4]
Costs Capitalized Subsequent to Acquisition	26	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	791	[4]
Buildings and Improvements	4,784	[4]
Total	5,575	[4]
Accumulated Depreciation	562	[4]
Year Acquired	2011	[4]
Year Constructed	1984	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Tampa West Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	2,246	[4]
Buildings and Improvements	8,868	[4]
Costs Capitalized Subsequent to Acquisition	905	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,246	[4]
Buildings and Improvements	9,773	[4]
Total	12,019	[4]
Accumulated Depreciation	908	[4]
Year Acquired	2011	[4]
Year Constructed	1975/93/94	[4]
Industrial [Member] | FLORIDA [Member] | Tampa [Member] | Madison Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	495	[4]
Buildings and Improvements	2,779	[4]
Costs Capitalized Subsequent to Acquisition	254	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	495	[4]
Buildings and Improvements	3,033	[4]
Total	3,528	[4]
Accumulated Depreciation	259	[4]
Year Acquired	2012	[4]
Year Constructed	2007	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Chancellor Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	291	[4]
Buildings and Improvements	1,711	[4]
Costs Capitalized Subsequent to Acquisition	217	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	291	[4]
Buildings and Improvements	1,928	[4]
Total	2,219	[4]
Accumulated Depreciation	1,009	[4]
Year Acquired	1996/97	[4]
Year Constructed	1996/97	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Exchange Distribution Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	603	[4]
Buildings and Improvements	2,414	[4]
Costs Capitalized Subsequent to Acquisition	2,019	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	603	[4]
Buildings and Improvements	4,433	[4]
Total	5,036	[4]
Accumulated Depreciation	2,838	[4]
Year Acquired	1994	[4]
Year Constructed	1975	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Exchange Distribution Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	300	[4]
Buildings and Improvements	945	[4]
Costs Capitalized Subsequent to Acquisition	266	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	300	[4]
Buildings and Improvements	1,211	[4]
Total	1,511	[4]
Accumulated Depreciation	552	[4]
Year Acquired	2002	[4]
Year Constructed	1976	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Exchange Distribution Center III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	320	[4]
Buildings and Improvements	997	[4]
Costs Capitalized Subsequent to Acquisition	386	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	320	[4]
Buildings and Improvements	1,383	[4]
Total	1,703	[4]
Accumulated Depreciation	668	[4]
Year Acquired	2002	[4]
Year Constructed	1980	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Sunbelt Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,474	[4]
Buildings and Improvements	5,745	[4]
Costs Capitalized Subsequent to Acquisition	5,287	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,474	[4]
Buildings and Improvements	11,032	[4]
Total	12,506	[4]
Accumulated Depreciation	6,955	[4]
Year Acquired	1989/97/98	[4]
Year Constructed	1974/87/97/98	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | John Young Commerce Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	497	[4]
Buildings and Improvements	2,444	[4]
Costs Capitalized Subsequent to Acquisition	824	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	497	[4]
Buildings and Improvements	3,268	[4]
Total	3,765	[4]
Accumulated Depreciation	1,578	[4]
Year Acquired	1997/98	[4]
Year Constructed	1997/98	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | John Young Commerce Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	512	[4]
Buildings and Improvements	3,613	[4]
Costs Capitalized Subsequent to Acquisition	191	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	512	[4]
Buildings and Improvements	3,804	[4]
Total	4,316	[4]
Accumulated Depreciation	2,199	[4]
Year Acquired	1998	[4]
Year Constructed	1999	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Altamonte Commerce Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,518	[4]
Buildings and Improvements	2,661	[4]
Costs Capitalized Subsequent to Acquisition	2,065	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,518	[4]
Buildings and Improvements	4,726	[4]
Total	6,244	[4]
Accumulated Depreciation	3,125	[4]
Year Acquired	1999	[4]
Year Constructed	1980/82	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Altamonte Commerce Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	745	[4]
Buildings and Improvements	2,618	[4]
Costs Capitalized Subsequent to Acquisition	1,089	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	745	[4]
Buildings and Improvements	3,707	[4]
Total	4,452	[4]
Accumulated Depreciation	1,610	[4]
Year Acquired	2003	[4]
Year Constructed	1975	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Sunport Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	555	[4]
Buildings and Improvements	1,977	[4]
Costs Capitalized Subsequent to Acquisition	667	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	555	[4]
Buildings and Improvements	2,644	[4]
Total	3,199	[4]
Accumulated Depreciation	1,232	[4]
Year Acquired	1999	[4]
Year Constructed	1999	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Sunport Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	597	[4]
Buildings and Improvements	3,271	[4]
Costs Capitalized Subsequent to Acquisition	1,436	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	597	[4]
Buildings and Improvements	4,707	[4]
Total	5,304	[4]
Accumulated Depreciation	2,981	[4]
Year Acquired	1999	[4]
Year Constructed	2001	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Sunport Center III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	642	[4]
Buildings and Improvements	3,121	[4]
Costs Capitalized Subsequent to Acquisition	755	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	642	[4]
Buildings and Improvements	3,876	[4]
Total	4,518	[4]
Accumulated Depreciation	1,705	[4]
Year Acquired	1999	[4]
Year Constructed	2002	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Sunport Center IV [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	642	[4]
Buildings and Improvements	2,917	[4]
Costs Capitalized Subsequent to Acquisition	970	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	642	[4]
Buildings and Improvements	3,887	[4]
Total	4,529	[4]
Accumulated Depreciation	1,560	[4]
Year Acquired	1999	[4]
Year Constructed	2004	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Sunport Center V [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	750	[4]
Buildings and Improvements	2,509	[4]
Costs Capitalized Subsequent to Acquisition	1,913	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	750	[4]
Buildings and Improvements	4,422	[4]
Total	5,172	[4]
Accumulated Depreciation	2,281	[4]
Year Acquired	1999	[4]
Year Constructed	2005	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Sunport Center VI [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	672	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	3,429	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	672	[4]
Buildings and Improvements	3,429	[4]
Total	4,101	[4]
Accumulated Depreciation	1,001	[4]
Year Acquired	1999	[4]
Year Constructed	2006	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Southridge Commerce Park I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	373	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	4,478	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	373	[4]
Buildings and Improvements	4,478	[4]
Total	4,851	[4]
Accumulated Depreciation	2,320	[4]
Year Acquired	2003	[4]
Year Constructed	2006	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Southridge Commerce Park II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	342	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	4,417	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	342	[4]
Buildings and Improvements	4,417	[4]
Total	4,759	[4]
Accumulated Depreciation	1,764	[4]
Year Acquired	2003	[4]
Year Constructed	2007	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Southridge Commerce Park III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	547	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	5,420	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	547	[4]
Buildings and Improvements	5,420	[4]
Total	5,967	[4]
Accumulated Depreciation	1,417	[4]
Year Acquired	2003	[4]
Year Constructed	2007	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Southridge Commerce Park IV [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,527	[4],[6]
Initial Cost to the Company [Abstract]
Land	506	[4],[6]
Buildings and Improvements	0	[4],[6]
Costs Capitalized Subsequent to Acquisition	4,561	[4],[6]
Gross Amount at which Carried at Close of Period [Abstract]
Land	506	[4],[6]
Buildings and Improvements	4,561	[4],[6]
Total	5,067	[4],[6]
Accumulated Depreciation	1,307	[4],[6]
Year Acquired	2003	[4],[6]
Year Constructed	2006	[4],[6]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Southridge Commerce Park V [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,248	[4],[6]
Initial Cost to the Company [Abstract]
Land	382	[4],[6]
Buildings and Improvements	0	[4],[6]
Costs Capitalized Subsequent to Acquisition	4,283	[4],[6]
Gross Amount at which Carried at Close of Period [Abstract]
Land	382	[4],[6]
Buildings and Improvements	4,283	[4],[6]
Total	4,665	[4],[6]
Accumulated Depreciation	1,580	[4],[6]
Year Acquired	2003	[4],[6]
Year Constructed	2006	[4],[6]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Southridge Commerce Park VI [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	571	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	5,101	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	571	[4]
Buildings and Improvements	5,101	[4]
Total	5,672	[4]
Accumulated Depreciation	1,166	[4]
Year Acquired	2003	[4]
Year Constructed	2007	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Southridge Commerce Park VII [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	520	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	6,295	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	520	[4]
Buildings and Improvements	6,295	[4]
Total	6,815	[4]
Accumulated Depreciation	1,549	[4]
Year Acquired	2003	[4]
Year Constructed	2008	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Southridge Commerce Park VIII [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	531	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	6,254	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	531	[4]
Buildings and Improvements	6,254	[4]
Total	6,785	[4]
Accumulated Depreciation	1,178	[4]
Year Acquired	2003	[4]
Year Constructed	2008	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Southridge Commerce Park XII [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	2,025	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	16,915	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,025	[4]
Buildings and Improvements	16,915	[4]
Total	18,940	[4]
Accumulated Depreciation	2,766	[4]
Year Acquired	2005	[4]
Year Constructed	2008	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Southridge IX [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	468	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	5,858	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	468	[4]
Buildings and Improvements	5,858	[4]
Total	6,326	[4]
Accumulated Depreciation	356	[4]
Year Acquired	2003	[4]
Year Constructed	2012	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Southridge XI [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	513	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	5,795	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	513	[4]
Buildings and Improvements	5,795	[4]
Total	6,308	[4]
Accumulated Depreciation	149	[4]
Year Acquired	2003	[4]
Year Constructed	2012	[4]
Industrial [Member] | FLORIDA [Member] | Orlando [Member] | Southridge X [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	414	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	4,824	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	414	[4]
Buildings and Improvements	4,824	[4]
Total	5,238	[4]
Accumulated Depreciation	52	[4]
Year Acquired	2003	[4]
Year Constructed	2012	[4]
Industrial [Member] | FLORIDA [Member] | Jacksonville [Member] | Deerwood Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,147	[4]
Buildings and Improvements	1,799	[4]
Costs Capitalized Subsequent to Acquisition	2,838	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,147	[4]
Buildings and Improvements	4,637	[4]
Total	5,784	[4]
Accumulated Depreciation	2,080	[4]
Year Acquired	1989	[4]
Year Constructed	1978	[4]
Industrial [Member] | FLORIDA [Member] | Jacksonville [Member] | Phillips Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,375	[4]
Buildings and Improvements	2,961	[4]
Costs Capitalized Subsequent to Acquisition	4,250	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,375	[4]
Buildings and Improvements	7,211	[4]
Total	8,586	[4]
Accumulated Depreciation	4,405	[4]
Year Acquired	1994	[4]
Year Constructed	1984/95	[4]
Industrial [Member] | FLORIDA [Member] | Jacksonville [Member] | Lake Pointe Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	12,794	[4],[7]
Initial Cost to the Company [Abstract]
Land	3,442	[4],[7]
Buildings and Improvements	6,450	[4],[7]
Costs Capitalized Subsequent to Acquisition	6,772	[4],[7]
Gross Amount at which Carried at Close of Period [Abstract]
Land	3,442	[4],[7]
Buildings and Improvements	13,222	[4],[7]
Total	16,664	[4],[7]
Accumulated Depreciation	8,697	[4],[7]
Year Acquired	1993	[4],[7]
Year Constructed	1986/87	[4],[7]
Industrial [Member] | FLORIDA [Member] | Jacksonville [Member] | Ellis Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	540	[4]
Buildings and Improvements	7,513	[4]
Costs Capitalized Subsequent to Acquisition	969	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	540	[4]
Buildings and Improvements	8,482	[4]
Total	9,022	[4]
Accumulated Depreciation	3,765	[4]
Year Acquired	1997	[4]
Year Constructed	1977	[4]
Industrial [Member] | FLORIDA [Member] | Jacksonville [Member] | Westside Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,170	[4]
Buildings and Improvements	12,400	[4]
Costs Capitalized Subsequent to Acquisition	4,508	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,170	[4]
Buildings and Improvements	16,908	[4]
Total	18,078	[4]
Accumulated Depreciation	8,652	[4]
Year Acquired	1997	[4]
Year Constructed	1984	[4]
Industrial [Member] | FLORIDA [Member] | Jacksonville [Member] | 12th Street Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	841	[4]
Buildings and Improvements	2,974	[4]
Costs Capitalized Subsequent to Acquisition	1,375	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	841	[4]
Buildings and Improvements	4,349	[4]
Total	5,190	[4]
Accumulated Depreciation	798	[4]
Year Acquired	2008	[4]
Year Constructed	1985	[4]
Industrial [Member] | FLORIDA [Member] | Jacksonville [Member] | Beach Commerce Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	476	[4]
Buildings and Improvements	1,899	[4]
Costs Capitalized Subsequent to Acquisition	614	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	476	[4]
Buildings and Improvements	2,513	[4]
Total	2,989	[4]
Accumulated Depreciation	1,130	[4]
Year Acquired	2000	[4]
Year Constructed	2000	[4]
Industrial [Member] | FLORIDA [Member] | Jacksonville [Member] | Interstate Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,879	[4]
Buildings and Improvements	5,700	[4]
Costs Capitalized Subsequent to Acquisition	1,549	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,879	[4]
Buildings and Improvements	7,249	[4]
Total	9,128	[4]
Accumulated Depreciation	2,866	[4]
Year Acquired	2005	[4]
Year Constructed	1990	[4]
Industrial [Member] | FLORIDA [Member] | Fort Lauderdale/Palm Beach area [Member] | Linpro Commerce Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	613	[4]
Buildings and Improvements	2,243	[4]
Costs Capitalized Subsequent to Acquisition	1,567	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	616	[4]
Buildings and Improvements	3,807	[4]
Total	4,423	[4]
Accumulated Depreciation	2,732	[4]
Year Acquired	1996	[4]
Year Constructed	1986	[4]
Industrial [Member] | FLORIDA [Member] | Fort Lauderdale/Palm Beach area [Member] | Cypress Creek Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	0	[4]
Buildings and Improvements	2,465	[4]
Costs Capitalized Subsequent to Acquisition	1,630	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	0	[4]
Buildings and Improvements	4,095	[4]
Total	4,095	[4]
Accumulated Depreciation	2,426	[4]
Year Acquired	1997	[4]
Year Constructed	1986	[4]
Industrial [Member] | FLORIDA [Member] | Fort Lauderdale/Palm Beach area [Member] | Lockhart Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	0	[4]
Buildings and Improvements	3,489	[4]
Costs Capitalized Subsequent to Acquisition	2,282	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	0	[4]
Buildings and Improvements	5,771	[4]
Total	5,771	[4]
Accumulated Depreciation	3,384	[4]
Year Acquired	1997	[4]
Year Constructed	1986	[4]
Industrial [Member] | FLORIDA [Member] | Fort Lauderdale/Palm Beach area [Member] | Interstate Commerce Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	485	[4]
Buildings and Improvements	2,652	[4]
Costs Capitalized Subsequent to Acquisition	704	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	485	[4]
Buildings and Improvements	3,356	[4]
Total	3,841	[4]
Accumulated Depreciation	1,933	[4]
Year Acquired	1998	[4]
Year Constructed	1988	[4]
Industrial [Member] | FLORIDA [Member] | Fort Lauderdale/Palm Beach area [Member] | Executive Airport Commerce Ctr [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	8,834	[4],[8]
Initial Cost to the Company [Abstract]
Land	1,991	[4],[8]
Buildings and Improvements	4,857	[4],[8]
Costs Capitalized Subsequent to Acquisition	5,087	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,991	[4],[8]
Buildings and Improvements	9,944	[4],[8]
Total	11,935	[4],[8]
Accumulated Depreciation	3,687	[4],[8]
Year Acquired	2001	[4],[8]
Year Constructed	2004/06	[4],[8]
Industrial [Member] | FLORIDA [Member] | Fort Lauderdale/Palm Beach area [Member] | Sample 95 Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	2,202	[4]
Buildings and Improvements	8,785	[4]
Costs Capitalized Subsequent to Acquisition	2,907	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,202	[4]
Buildings and Improvements	11,692	[4]
Total	13,894	[4]
Accumulated Depreciation	6,404	[4]
Year Acquired	1996/98	[4]
Year Constructed	1990/99	[4]
Industrial [Member] | FLORIDA [Member] | Fort Lauderdale/Palm Beach area [Member] | Blue Heron Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	975	[4]
Buildings and Improvements	3,626	[4]
Costs Capitalized Subsequent to Acquisition	1,744	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	975	[4]
Buildings and Improvements	5,370	[4]
Total	6,345	[4]
Accumulated Depreciation	2,922	[4]
Year Acquired	1999	[4]
Year Constructed	1986	[4]
Industrial [Member] | FLORIDA [Member] | Fort Lauderdale/Palm Beach area [Member] | Blue Heron Distribution Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	1,026	[4]
Initial Cost to the Company [Abstract]
Land	1,385	[4]
Buildings and Improvements	4,222	[4]
Costs Capitalized Subsequent to Acquisition	809	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,385	[4]
Buildings and Improvements	5,031	[4]
Total	6,416	[4]
Accumulated Depreciation	1,986	[4]
Year Acquired	2004	[4]
Year Constructed	1988	[4]
Industrial [Member] | FLORIDA [Member] | Fort Lauderdale/Palm Beach area [Member] | Blue Heron Distribution Center III
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	450	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	2,663	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	450	[4]
Buildings and Improvements	2,663	[4]
Total	3,113	[4]
Accumulated Depreciation	484	[4]
Year Acquired	2004	[4]
Year Constructed	2009	[4]
Industrial [Member] | FLORIDA [Member] | Fort Myers [Member] | SunCoast Commerce Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	911	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	4,758	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	928	[4]
Buildings and Improvements	4,741	[4]
Total	5,669	[4]
Accumulated Depreciation	1,213	[4]
Year Acquired	2005	[4]
Year Constructed	2008	[4]
Industrial [Member] | FLORIDA [Member] | Fort Myers [Member] | SunCoast Commerce Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	911	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	4,952	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	928	[4]
Buildings and Improvements	4,935	[4]
Total	5,863	[4]
Accumulated Depreciation	1,388	[4]
Year Acquired	2005	[4]
Year Constructed	2007	[4]
Industrial [Member] | FLORIDA [Member] | Fort Myers [Member] | SunCoast Commerce Center III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,720	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	6,376	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,763	[4]
Buildings and Improvements	6,333	[4]
Total	8,096	[4]
Accumulated Depreciation	1,168	[4]
Year Acquired	2006	[4]
Year Constructed	2008	[4]
Industrial [Member] | CALIFORNIA [Member] | San Francisco area [Member] | Wiegman Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	10,870	[4],[9]
Initial Cost to the Company [Abstract]
Land	2,197	[4],[9]
Buildings and Improvements	8,788	[4],[9]
Costs Capitalized Subsequent to Acquisition	1,836	[4],[9]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,308	[4],[9]
Buildings and Improvements	10,513	[4],[9]
Total	12,821	[4],[9]
Accumulated Depreciation	4,916	[4],[9]
Year Acquired	1996	[4],[9]
Year Constructed	1986/87	[4],[9]
Industrial [Member] | CALIFORNIA [Member] | San Francisco area [Member] | Wiegman Distribution Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	2,579	[4]
Buildings and Improvements	4,316	[4]
Costs Capitalized Subsequent to Acquisition	2	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,579	[4]
Buildings and Improvements	4,318	[4]
Total	6,897	[4]
Accumulated Depreciation	176	[4]
Year Acquired	2012	[4]
Year Constructed	1998	[4]
Industrial [Member] | CALIFORNIA [Member] | San Francisco area [Member] | Huntwood Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	17,963	[4],[9]
Initial Cost to the Company [Abstract]
Land	3,842	[4],[9]
Buildings and Improvements	15,368	[4],[9]
Costs Capitalized Subsequent to Acquisition	1,990	[4],[9]
Gross Amount at which Carried at Close of Period [Abstract]
Land	3,842	[4],[9]
Buildings and Improvements	17,358	[4],[9]
Total	21,200	[4],[9]
Accumulated Depreciation	8,474	[4],[9]
Year Acquired	1996	[4],[9]
Year Constructed	1988	[4],[9]
Industrial [Member] | CALIFORNIA [Member] | San Francisco area [Member] | San Clemente Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	893	[4]
Buildings and Improvements	2,004	[4]
Costs Capitalized Subsequent to Acquisition	852	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	893	[4]
Buildings and Improvements	2,856	[4]
Total	3,749	[4]
Accumulated Depreciation	1,345	[4]
Year Acquired	1997	[4]
Year Constructed	1978	[4]
Industrial [Member] | CALIFORNIA [Member] | San Francisco area [Member] | Yosemite Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	259	[4]
Buildings and Improvements	7,058	[4]
Costs Capitalized Subsequent to Acquisition	1,019	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	259	[4]
Buildings and Improvements	8,077	[4]
Total	8,336	[4]
Accumulated Depreciation	3,805	[4]
Year Acquired	1999	[4]
Year Constructed	1974/87	[4]
Industrial [Member] | CALIFORNIA [Member] | Los Angeles area [Member] | Kingsview Industrial Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,860	[10],[4]
Initial Cost to the Company [Abstract]
Land	643	[10],[4]
Buildings and Improvements	2,573	[10],[4]
Costs Capitalized Subsequent to Acquisition	512	[10],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	643	[10],[4]
Buildings and Improvements	3,085	[10],[4]
Total	3,728	[10],[4]
Accumulated Depreciation	1,555	[10],[4]
Year Acquired	1996	[10],[4]
Year Constructed	1980	[10],[4]
Industrial [Member] | CALIFORNIA [Member] | Los Angeles area [Member] | Dominguez Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	8,594	[10],[4]
Initial Cost to the Company [Abstract]
Land	2,006	[10],[4]
Buildings and Improvements	8,025	[10],[4]
Costs Capitalized Subsequent to Acquisition	1,170	[10],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,006	[10],[4]
Buildings and Improvements	9,195	[10],[4]
Total	11,201	[10],[4]
Accumulated Depreciation	4,725	[10],[4]
Year Acquired	1996	[10],[4]
Year Constructed	1977	[10],[4]
Industrial [Member] | CALIFORNIA [Member] | Los Angeles area [Member] | Main Street Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,606	[4]
Buildings and Improvements	4,103	[4]
Costs Capitalized Subsequent to Acquisition	787	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,606	[4]
Buildings and Improvements	4,890	[4]
Total	6,496	[4]
Accumulated Depreciation	2,279	[4]
Year Acquired	1999	[4]
Year Constructed	1999	[4]
Industrial [Member] | CALIFORNIA [Member] | Los Angeles area [Member] | Walnut Business Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	7,132	[10],[4]
Initial Cost to the Company [Abstract]
Land	2,885	[10],[4]
Buildings and Improvements	5,274	[10],[4]
Costs Capitalized Subsequent to Acquisition	1,136	[10],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,885	[10],[4]
Buildings and Improvements	6,410	[10],[4]
Total	9,295	[10],[4]
Accumulated Depreciation	3,067	[10],[4]
Year Acquired	1996	[10],[4]
Year Constructed	1966/90	[10],[4]
Industrial [Member] | CALIFORNIA [Member] | Los Angeles area [Member] | Washington Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	5,505	[10],[4]
Initial Cost to the Company [Abstract]
Land	1,636	[10],[4]
Buildings and Improvements	4,900	[10],[4]
Costs Capitalized Subsequent to Acquisition	639	[10],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,636	[10],[4]
Buildings and Improvements	5,539	[10],[4]
Total	7,175	[10],[4]
Accumulated Depreciation	2,539	[10],[4]
Year Acquired	1997	[10],[4]
Year Constructed	1996/97	[10],[4]
Industrial [Member] | CALIFORNIA [Member] | Los Angeles area [Member] | Chino Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	10,117	[11],[4]
Initial Cost to the Company [Abstract]
Land	2,544	[11],[4]
Buildings and Improvements	10,175	[11],[4]
Costs Capitalized Subsequent to Acquisition	1,623	[11],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,544	[11],[4]
Buildings and Improvements	11,798	[11],[4]
Total	14,342	[11],[4]
Accumulated Depreciation	5,984	[11],[4]
Year Acquired	1998	[11],[4]
Year Constructed	1980	[11],[4]
Industrial [Member] | CALIFORNIA [Member] | Los Angeles area [Member] | Industry Distribution Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	18,799	[10],[4]
Initial Cost to the Company [Abstract]
Land	10,230	[10],[4]
Buildings and Improvements	12,373	[10],[4]
Costs Capitalized Subsequent to Acquisition	1,899	[10],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	10,230	[10],[4]
Buildings and Improvements	14,272	[10],[4]
Total	24,502	[10],[4]
Accumulated Depreciation	6,600	[10],[4]
Year Acquired	1998	[10],[4]
Year Constructed	1959	[10],[4]
Industrial [Member] | CALIFORNIA [Member] | Los Angeles area [Member] | Industry Distribution Center III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,190	[10],[4]
Initial Cost to the Company [Abstract]
Land	0	[10],[4]
Buildings and Improvements	3,012	[10],[4]
Costs Capitalized Subsequent to Acquisition	(157)	[10],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	0	[10],[4]
Buildings and Improvements	2,855	[10],[4]
Total	2,855	[10],[4]
Accumulated Depreciation	2,852	[10],[4]
Year Acquired	2007	[10],[4]
Year Constructed	1992	[10],[4]
Industrial [Member] | CALIFORNIA [Member] | Los Angeles area [Member] | Chestnut Business Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,674	[4]
Buildings and Improvements	3,465	[4]
Costs Capitalized Subsequent to Acquisition	209	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,674	[4]
Buildings and Improvements	3,674	[4]
Total	5,348	[4]
Accumulated Depreciation	1,537	[4]
Year Acquired	1998	[4]
Year Constructed	1999	[4]
Industrial [Member] | CALIFORNIA [Member] | Los Angeles area [Member] | Los Angeles Corporate Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,363	[4]
Buildings and Improvements	5,453	[4]
Costs Capitalized Subsequent to Acquisition	2,890	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,363	[4]
Buildings and Improvements	8,343	[4]
Total	9,706	[4]
Accumulated Depreciation	4,510	[4]
Year Acquired	1996	[4]
Year Constructed	1986	[4]
Industrial [Member] | CALIFORNIA [Member] | Santa Barbara [Member] | University Business Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	5,517	[4]
Buildings and Improvements	22,067	[4]
Costs Capitalized Subsequent to Acquisition	4,895	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	5,520	[4]
Buildings and Improvements	26,959	[4]
Total	32,479	[4]
Accumulated Depreciation	13,661	[4]
Year Acquired	1996	[4]
Year Constructed	1987/88	[4]
Industrial [Member] | CALIFORNIA [Member] | Santa Barbara [Member] | Castilian Research Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	2,719	[4]
Buildings and Improvements	1,410	[4]
Costs Capitalized Subsequent to Acquisition	4,840	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,719	[4]
Buildings and Improvements	6,250	[4]
Total	8,969	[4]
Accumulated Depreciation	1,111	[4]
Year Acquired	2005	[4]
Year Constructed	2007	[4]
Industrial [Member] | CALIFORNIA [Member] | Fresno [Member] | Shaw Commerce Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	14,007	[10],[4]
Initial Cost to the Company [Abstract]
Land	2,465	[10],[4]
Buildings and Improvements	11,627	[10],[4]
Costs Capitalized Subsequent to Acquisition	4,164	[10],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,465	[10],[4]
Buildings and Improvements	15,791	[10],[4]
Total	18,256	[10],[4]
Accumulated Depreciation	8,505	[10],[4]
Year Acquired	1998	[10],[4]
Year Constructed	1978/81/87	[10],[4]
Industrial [Member] | CALIFORNIA [Member] | San Diego [Member] | Eastlake Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	7,532	[12],[4]
Initial Cost to the Company [Abstract]
Land	3,046	[12],[4]
Buildings and Improvements	6,888	[12],[4]
Costs Capitalized Subsequent to Acquisition	1,629	[12],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	3,046	[12],[4]
Buildings and Improvements	8,517	[12],[4]
Total	11,563	[12],[4]
Accumulated Depreciation	4,284	[12],[4]
Year Acquired	1997	[12],[4]
Year Constructed	1989	[12],[4]
Industrial [Member] | CALIFORNIA [Member] | San Diego [Member] | Ocean View Corporate Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	10,478	[4],[8]
Initial Cost to the Company [Abstract]
Land	6,577	[4],[8]
Buildings and Improvements	7,105	[4],[8]
Costs Capitalized Subsequent to Acquisition	475	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	6,577	[4],[8]
Buildings and Improvements	7,580	[4],[8]
Total	14,157	[4],[8]
Accumulated Depreciation	1,601	[4],[8]
Year Acquired	2010	[4],[8]
Year Constructed	2005	[4],[8]
Industrial [Member] | TEXAS [Member] | Dallas [Member] | Interstate Distribution Center I and II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	6,269	[13],[4]
Initial Cost to the Company [Abstract]
Land	1,746	[13],[4]
Buildings and Improvements	4,941	[13],[4]
Costs Capitalized Subsequent to Acquisition	2,306	[13],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,746	[13],[4]
Buildings and Improvements	7,247	[13],[4]
Total	8,993	[13],[4]
Accumulated Depreciation	5,108	[13],[4]
Year Acquired	1988	[13],[4]
Year Constructed	1978	[13],[4]
Industrial [Member] | TEXAS [Member] | Dallas [Member] | Interstate Distribution Center III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,272	[13],[4]
Initial Cost to the Company [Abstract]
Land	519	[13],[4]
Buildings and Improvements	2,008	[13],[4]
Costs Capitalized Subsequent to Acquisition	732	[13],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	519	[13],[4]
Buildings and Improvements	2,740	[13],[4]
Total	3,259	[13],[4]
Accumulated Depreciation	1,477	[13],[4]
Year Acquired	2000	[13],[4]
Year Constructed	1979	[13],[4]
Industrial [Member] | TEXAS [Member] | Dallas [Member] | Interstate Distribution Center IV [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	416	[4]
Buildings and Improvements	2,481	[4]
Costs Capitalized Subsequent to Acquisition	402	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	416	[4]
Buildings and Improvements	2,883	[4]
Total	3,299	[4]
Accumulated Depreciation	1,105	[4]
Year Acquired	2004	[4]
Year Constructed	2002	[4]
Industrial [Member] | TEXAS [Member] | Dallas [Member] | Interstate Distribution Center V, VI, VII [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,987	[4],[6]
Initial Cost to the Company [Abstract]
Land	1,824	[4],[6]
Buildings and Improvements	4,106	[4],[6]
Costs Capitalized Subsequent to Acquisition	1,234	[4],[6]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,824	[4],[6]
Buildings and Improvements	5,340	[4],[6]
Total	7,164	[4],[6]
Accumulated Depreciation	1,627	[4],[6]
Year Acquired	2009	[4],[6]
Year Constructed	1979/80/81	[4],[6]
Industrial [Member] | TEXAS [Member] | Dallas [Member] | Venture Warehouses [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	5,154	[13],[4]
Initial Cost to the Company [Abstract]
Land	1,452	[13],[4]
Buildings and Improvements	3,762	[13],[4]
Costs Capitalized Subsequent to Acquisition	2,180	[13],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,452	[13],[4]
Buildings and Improvements	5,942	[13],[4]
Total	7,394	[13],[4]
Accumulated Depreciation	4,103	[13],[4]
Year Acquired	1988	[13],[4]
Year Constructed	1979	[13],[4]
Industrial [Member] | TEXAS [Member] | Dallas [Member] | Stemmons Circle [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,062	[13],[4]
Initial Cost to the Company [Abstract]
Land	363	[13],[4]
Buildings and Improvements	2,014	[13],[4]
Costs Capitalized Subsequent to Acquisition	581	[13],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	363	[13],[4]
Buildings and Improvements	2,595	[13],[4]
Total	2,958	[13],[4]
Accumulated Depreciation	1,529	[13],[4]
Year Acquired	1998	[13],[4]
Year Constructed	1977	[13],[4]
Industrial [Member] | TEXAS [Member] | Dallas [Member] | Ambassador Row Warehouses [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,156	[4]
Buildings and Improvements	4,625	[4]
Costs Capitalized Subsequent to Acquisition	2,444	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,156	[4]
Buildings and Improvements	7,069	[4]
Total	8,225	[4]
Accumulated Depreciation	4,356	[4]
Year Acquired	1998	[4]
Year Constructed	1958/65	[4]
Industrial [Member] | TEXAS [Member] | Dallas [Member] | North Stemmons II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	150	[4]
Buildings and Improvements	583	[4]
Costs Capitalized Subsequent to Acquisition	435	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	150	[4]
Buildings and Improvements	1,018	[4]
Total	1,168	[4]
Accumulated Depreciation	398	[4]
Year Acquired	2002	[4]
Year Constructed	1971	[4]
Industrial [Member] | TEXAS [Member] | Dallas [Member] | North Stemmons III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	380	[4]
Buildings and Improvements	2,066	[4]
Costs Capitalized Subsequent to Acquisition	48	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	380	[4]
Buildings and Improvements	2,114	[4]
Total	2,494	[4]
Accumulated Depreciation	443	[4]
Year Acquired	2007	[4]
Year Constructed	1974	[4]
Industrial [Member] | TEXAS [Member] | Dallas [Member] | Shady Trail Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,850	[4],[5]
Initial Cost to the Company [Abstract]
Land	635	[4],[5]
Buildings and Improvements	3,621	[4],[5]
Costs Capitalized Subsequent to Acquisition	730	[4],[5]
Gross Amount at which Carried at Close of Period [Abstract]
Land	635	[4],[5]
Buildings and Improvements	4,351	[4],[5]
Total	4,986	[4],[5]
Accumulated Depreciation	1,636	[4],[5]
Year Acquired	2003	[4],[5]
Year Constructed	1998	[4],[5]
Industrial [Member] | TEXAS [Member] | Dallas [Member] | Valwood Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	4,361	[4]
Buildings and Improvements	34,405	[4]
Costs Capitalized Subsequent to Acquisition	320	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	4,361	[4]
Buildings and Improvements	34,725	[4]
Total	39,086	[4]
Accumulated Depreciation	1,756	[4]
Year Acquired	2012	[4]
Year Constructed	1986/87/97/98	[4]
Industrial [Member] | TEXAS [Member] | Dallas [Member] | Northfield Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	12,471	[4]
Buildings and Improvements	50,713	[4]
Costs Capitalized Subsequent to Acquisition	245	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	12,471	[4]
Buildings and Improvements	50,958	[4]
Total	63,429	[4]
Accumulated Depreciation	1,800	[4]
Year Acquired	2013	[4]
Year Constructed	1999-2001/03/04/08	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Northwest Point Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,243	[4]
Buildings and Improvements	5,640	[4]
Costs Capitalized Subsequent to Acquisition	4,649	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,243	[4]
Buildings and Improvements	10,289	[4]
Total	11,532	[4]
Accumulated Depreciation	6,103	[4]
Year Acquired	1994	[4]
Year Constructed	1984/85	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Lockwood Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	749	[4]
Buildings and Improvements	5,444	[4]
Costs Capitalized Subsequent to Acquisition	1,983	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	749	[4]
Buildings and Improvements	7,427	[4]
Total	8,176	[4]
Accumulated Depreciation	3,798	[4]
Year Acquired	1997	[4]
Year Constructed	1968/69	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | West Loop Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	5,252	[13],[4]
Initial Cost to the Company [Abstract]
Land	905	[13],[4]
Buildings and Improvements	4,383	[13],[4]
Costs Capitalized Subsequent to Acquisition	2,246	[13],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	905	[13],[4]
Buildings and Improvements	6,629	[13],[4]
Total	7,534	[13],[4]
Accumulated Depreciation	3,701	[13],[4]
Year Acquired	1997/2000	[13],[4]
Year Constructed	1980	[13],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 1 and 2 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	5,488	[11],[4]
Initial Cost to the Company [Abstract]
Land	660	[11],[4]
Buildings and Improvements	5,893	[11],[4]
Costs Capitalized Subsequent to Acquisition	1,227	[11],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	660	[11],[4]
Buildings and Improvements	7,120	[11],[4]
Total	7,780	[11],[4]
Accumulated Depreciation	3,852	[11],[4]
Year Acquired	1998	[11],[4]
Year Constructed	1996	[11],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 3, 4 and 5 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	5,882	[13],[4]
Initial Cost to the Company [Abstract]
Land	1,025	[13],[4]
Buildings and Improvements	6,413	[13],[4]
Costs Capitalized Subsequent to Acquisition	1,000	[13],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,025	[13],[4]
Buildings and Improvements	7,413	[13],[4]
Total	8,438	[13],[4]
Accumulated Depreciation	3,638	[13],[4]
Year Acquired	1998	[13],[4]
Year Constructed	1998	[13],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 6 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,273	[13],[4]
Initial Cost to the Company [Abstract]
Land	425	[13],[4]
Buildings and Improvements	2,423	[13],[4]
Costs Capitalized Subsequent to Acquisition	414	[13],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	425	[13],[4]
Buildings and Improvements	2,837	[13],[4]
Total	3,262	[13],[4]
Accumulated Depreciation	1,514	[13],[4]
Year Acquired	1998	[13],[4]
Year Constructed	1998	[13],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 7 and 8 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	6,553	[13],[4]
Initial Cost to the Company [Abstract]
Land	680	[13],[4]
Buildings and Improvements	4,584	[13],[4]
Costs Capitalized Subsequent to Acquisition	4,139	[13],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	680	[13],[4]
Buildings and Improvements	8,723	[13],[4]
Total	9,403	[13],[4]
Accumulated Depreciation	4,331	[13],[4]
Year Acquired	1998	[13],[4]
Year Constructed	1998	[13],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 9 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,685	[13],[4]
Initial Cost to the Company [Abstract]
Land	800	[13],[4]
Buildings and Improvements	4,355	[13],[4]
Costs Capitalized Subsequent to Acquisition	1,566	[13],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	800	[13],[4]
Buildings and Improvements	5,921	[13],[4]
Total	6,721	[13],[4]
Accumulated Depreciation	2,215	[13],[4]
Year Acquired	1998	[13],[4]
Year Constructed	1998	[13],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 10 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	933	[4]
Buildings and Improvements	4,779	[4]
Costs Capitalized Subsequent to Acquisition	325	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	933	[4]
Buildings and Improvements	5,104	[4]
Total	6,037	[4]
Accumulated Depreciation	1,937	[4]
Year Acquired	2001	[4]
Year Constructed	1999	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 11 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	638	[4]
Buildings and Improvements	3,764	[4]
Costs Capitalized Subsequent to Acquisition	1,155	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	638	[4]
Buildings and Improvements	4,919	[4]
Total	5,557	[4]
Accumulated Depreciation	2,178	[4]
Year Acquired	1999	[4]
Year Constructed	1999	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 12 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	340	[4]
Buildings and Improvements	2,419	[4]
Costs Capitalized Subsequent to Acquisition	203	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	340	[4]
Buildings and Improvements	2,622	[4]
Total	2,962	[4]
Accumulated Depreciation	1,353	[4]
Year Acquired	2000	[4]
Year Constructed	2002	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 13 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	282	[4]
Buildings and Improvements	2,569	[4]
Costs Capitalized Subsequent to Acquisition	282	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	282	[4]
Buildings and Improvements	2,851	[4]
Total	3,133	[4]
Accumulated Depreciation	1,667	[4]
Year Acquired	2000	[4]
Year Constructed	2002	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 14 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	722	[4]
Buildings and Improvements	2,629	[4]
Costs Capitalized Subsequent to Acquisition	535	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	722	[4]
Buildings and Improvements	3,164	[4]
Total	3,886	[4]
Accumulated Depreciation	1,456	[4]
Year Acquired	2000	[4]
Year Constructed	2003	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 15 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,275	[12],[4]
Initial Cost to the Company [Abstract]
Land	731	[12],[4]
Buildings and Improvements	0	[12],[4]
Costs Capitalized Subsequent to Acquisition	5,831	[12],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	731	[12],[4]
Buildings and Improvements	5,831	[12],[4]
Total	6,562	[12],[4]
Accumulated Depreciation	2,542	[12],[4]
Year Acquired	2000	[12],[4]
Year Constructed	2007	[12],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 16 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,109	[14],[4]
Initial Cost to the Company [Abstract]
Land	519	[14],[4]
Buildings and Improvements	4,248	[14],[4]
Costs Capitalized Subsequent to Acquisition	1,124	[14],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	519	[14],[4]
Buildings and Improvements	5,372	[14],[4]
Total	5,891	[14],[4]
Accumulated Depreciation	2,266	[14],[4]
Year Acquired	2000	[14],[4]
Year Constructed	2005	[14],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 17 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,491	[4],[5]
Initial Cost to the Company [Abstract]
Land	373	[4],[5]
Buildings and Improvements	1,945	[4],[5]
Costs Capitalized Subsequent to Acquisition	785	[4],[5]
Gross Amount at which Carried at Close of Period [Abstract]
Land	373	[4],[5]
Buildings and Improvements	2,730	[4],[5]
Total	3,103	[4],[5]
Accumulated Depreciation	969	[4],[5]
Year Acquired	2000	[4],[5]
Year Constructed	2004	[4],[5]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 18 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	323	[4]
Buildings and Improvements	1,512	[4]
Costs Capitalized Subsequent to Acquisition	251	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	323	[4]
Buildings and Improvements	1,763	[4]
Total	2,086	[4]
Accumulated Depreciation	615	[4]
Year Acquired	2005	[4]
Year Constructed	1995	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 19 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,714	[4],[7]
Initial Cost to the Company [Abstract]
Land	373	[4],[7]
Buildings and Improvements	2,256	[4],[7]
Costs Capitalized Subsequent to Acquisition	905	[4],[7]
Gross Amount at which Carried at Close of Period [Abstract]
Land	373	[4],[7]
Buildings and Improvements	3,161	[4],[7]
Total	3,534	[4],[7]
Accumulated Depreciation	1,628	[4],[7]
Year Acquired	2000	[4],[7]
Year Constructed	2004	[4],[7]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 20 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,273	[4],[7]
Initial Cost to the Company [Abstract]
Land	1,008	[4],[7]
Buildings and Improvements	1,948	[4],[7]
Costs Capitalized Subsequent to Acquisition	1,307	[4],[7]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,008	[4],[7]
Buildings and Improvements	3,255	[4],[7]
Total	4,263	[4],[7]
Accumulated Depreciation	1,551	[4],[7]
Year Acquired	2000	[4],[7]
Year Constructed	2004	[4],[7]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 21 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,758	[11],[4]
Initial Cost to the Company [Abstract]
Land	436	[11],[4]
Buildings and Improvements	0	[11],[4]
Costs Capitalized Subsequent to Acquisition	3,474	[11],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	436	[11],[4]
Buildings and Improvements	3,474	[11],[4]
Total	3,910	[11],[4]
Accumulated Depreciation	957	[11],[4]
Year Acquired	2000/03	[11],[4]
Year Constructed	2006	[11],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 22 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,122	[12],[4]
Initial Cost to the Company [Abstract]
Land	436	[12],[4]
Buildings and Improvements	0	[12],[4]
Costs Capitalized Subsequent to Acquisition	4,356	[12],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	436	[12],[4]
Buildings and Improvements	4,356	[12],[4]
Total	4,792	[12],[4]
Accumulated Depreciation	1,347	[12],[4]
Year Acquired	2000	[12],[4]
Year Constructed	2007	[12],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 23 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	5,599	[11],[4]
Initial Cost to the Company [Abstract]
Land	910	[11],[4]
Buildings and Improvements	0	[11],[4]
Costs Capitalized Subsequent to Acquisition	7,026	[11],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	910	[11],[4]
Buildings and Improvements	7,026	[11],[4]
Total	7,936	[11],[4]
Accumulated Depreciation	1,903	[11],[4]
Year Acquired	2000	[11],[4]
Year Constructed	2007	[11],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 24 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	837	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	5,453	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	837	[4]
Buildings and Improvements	5,453	[4]
Total	6,290	[4]
Accumulated Depreciation	1,705	[4]
Year Acquired	2005	[4]
Year Constructed	2008	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 25 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	508	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	3,648	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	508	[4]
Buildings and Improvements	3,648	[4]
Total	4,156	[4]
Accumulated Depreciation	880	[4]
Year Acquired	2005	[4]
Year Constructed	2008	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 26 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,694	[4],[8]
Initial Cost to the Company [Abstract]
Land	445	[4],[8]
Buildings and Improvements	0	[4],[8]
Costs Capitalized Subsequent to Acquisition	3,194	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	445	[4],[8]
Buildings and Improvements	3,194	[4],[8]
Total	3,639	[4],[8]
Accumulated Depreciation	752	[4],[8]
Year Acquired	2005	[4],[8]
Year Constructed	2008	[4],[8]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 27 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	837	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	4,964	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	837	[4]
Buildings and Improvements	4,964	[4]
Total	5,801	[4]
Accumulated Depreciation	987	[4]
Year Acquired	2005	[4]
Year Constructed	2008	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 28 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,404	[4],[8]
Initial Cost to the Company [Abstract]
Land	550	[4],[8]
Buildings and Improvements	0	[4],[8]
Costs Capitalized Subsequent to Acquisition	4,049	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	550	[4],[8]
Buildings and Improvements	4,049	[4],[8]
Total	4,599	[4],[8]
Accumulated Depreciation	789	[4],[8]
Year Acquired	2005	[4],[8]
Year Constructed	2009	[4],[8]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 29 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,640	[4],[8]
Initial Cost to the Company [Abstract]
Land	782	[4],[8]
Buildings and Improvements	0	[4],[8]
Costs Capitalized Subsequent to Acquisition	4,136	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	974	[4],[8]
Buildings and Improvements	3,944	[4],[8]
Total	4,918	[4],[8]
Accumulated Depreciation	761	[4],[8]
Year Acquired	2007	[4],[8]
Year Constructed	2009	[4],[8]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 30 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,921	[4],[8]
Initial Cost to the Company [Abstract]
Land	981	[4],[8]
Buildings and Improvements	0	[4],[8]
Costs Capitalized Subsequent to Acquisition	5,668	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,222	[4],[8]
Buildings and Improvements	5,427	[4],[8]
Total	6,649	[4],[8]
Accumulated Depreciation	1,223	[4],[8]
Year Acquired	2007	[4],[8]
Year Constructed	2009	[4],[8]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr31a Member
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	684	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	3,643	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	684	[4]
Buildings and Improvements	3,643	[4]
Total	4,327	[4]
Accumulated Depreciation	509	[4]
Year Acquired	2008	[4]
Year Constructed	2011	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 32 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,551	[4],[6]
Initial Cost to the Company [Abstract]
Land	1,146	[4],[6]
Buildings and Improvements	0	[4],[6]
Costs Capitalized Subsequent to Acquisition	5,391	[4],[6]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,427	[4],[6]
Buildings and Improvements	5,110	[4],[6]
Total	6,537	[4],[6]
Accumulated Depreciation	408	[4],[6]
Year Acquired	2007	[4],[6]
Year Constructed	2012	[4],[6]
Industrial [Member] | TEXAS [Member] | Houston [Member] | America Plaza [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,349	[13],[4]
Initial Cost to the Company [Abstract]
Land	662	[13],[4]
Buildings and Improvements	4,660	[13],[4]
Costs Capitalized Subsequent to Acquisition	918	[13],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	662	[13],[4]
Buildings and Improvements	5,578	[13],[4]
Total	6,240	[13],[4]
Accumulated Depreciation	2,814	[13],[4]
Year Acquired	1998	[13],[4]
Year Constructed	1996	[13],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Central Green Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,295	[13],[4]
Initial Cost to the Company [Abstract]
Land	566	[13],[4]
Buildings and Improvements	4,031	[13],[4]
Costs Capitalized Subsequent to Acquisition	130	[13],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	566	[13],[4]
Buildings and Improvements	4,161	[13],[4]
Total	4,727	[13],[4]
Accumulated Depreciation	1,995	[13],[4]
Year Acquired	1999	[13],[4]
Year Constructed	1998	[13],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Glenmont Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	6,692	[13],[4]
Initial Cost to the Company [Abstract]
Land	936	[13],[4]
Buildings and Improvements	6,161	[13],[4]
Costs Capitalized Subsequent to Acquisition	2,504	[13],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	936	[13],[4]
Buildings and Improvements	8,665	[13],[4]
Total	9,601	[13],[4]
Accumulated Depreciation	4,270	[13],[4]
Year Acquired	1998	[13],[4]
Year Constructed	1999/2000	[13],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Techway Southwest I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	729	[4]
Buildings and Improvements	3,765	[4]
Costs Capitalized Subsequent to Acquisition	2,174	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	729	[4]
Buildings and Improvements	5,939	[4]
Total	6,668	[4]
Accumulated Depreciation	2,787	[4]
Year Acquired	2000	[4]
Year Constructed	2001	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Techway Southwest II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,239	[4],[7]
Initial Cost to the Company [Abstract]
Land	550	[4],[7]
Buildings and Improvements	3,689	[4],[7]
Costs Capitalized Subsequent to Acquisition	1,282	[4],[7]
Gross Amount at which Carried at Close of Period [Abstract]
Land	550	[4],[7]
Buildings and Improvements	4,971	[4],[7]
Total	5,521	[4],[7]
Accumulated Depreciation	1,798	[4],[7]
Year Acquired	2000	[4],[7]
Year Constructed	2004	[4],[7]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Techway Southwest III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,012	[12],[4]
Initial Cost to the Company [Abstract]
Land	597	[12],[4]
Buildings and Improvements	0	[12],[4]
Costs Capitalized Subsequent to Acquisition	5,562	[12],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	751	[12],[4]
Buildings and Improvements	5,408	[12],[4]
Total	6,159	[12],[4]
Accumulated Depreciation	2,036	[12],[4]
Year Acquired	1999	[12],[4]
Year Constructed	2006	[12],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Techway Southwest IV [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,593	[4],[8]
Initial Cost to the Company [Abstract]
Land	535	[4],[8]
Buildings and Improvements	0	[4],[8]
Costs Capitalized Subsequent to Acquisition	5,670	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	674	[4],[8]
Buildings and Improvements	5,531	[4],[8]
Total	6,205	[4],[8]
Accumulated Depreciation	1,256	[4],[8]
Year Acquired	1999	[4],[8]
Year Constructed	2008	[4],[8]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Beltway Crossing I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	458	[4]
Buildings and Improvements	5,712	[4]
Costs Capitalized Subsequent to Acquisition	1,684	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	458	[4]
Buildings and Improvements	7,396	[4]
Total	7,854	[4]
Accumulated Depreciation	3,170	[4]
Year Acquired	2002	[4]
Year Constructed	2001	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Beltway Crossing II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,062	[12],[4]
Initial Cost to the Company [Abstract]
Land	415	[12],[4]
Buildings and Improvements	0	[12],[4]
Costs Capitalized Subsequent to Acquisition	2,751	[12],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	415	[12],[4]
Buildings and Improvements	2,751	[12],[4]
Total	3,166	[12],[4]
Accumulated Depreciation	915	[12],[4]
Year Acquired	2005	[12],[4]
Year Constructed	2007	[12],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Beltway Crossing III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,299	[12],[4]
Initial Cost to the Company [Abstract]
Land	460	[12],[4]
Buildings and Improvements	0	[12],[4]
Costs Capitalized Subsequent to Acquisition	3,069	[12],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	460	[12],[4]
Buildings and Improvements	3,069	[12],[4]
Total	3,529	[12],[4]
Accumulated Depreciation	1,066	[12],[4]
Year Acquired	2005	[12],[4]
Year Constructed	2008	[12],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Beltway Crossing IV [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,260	[12],[4]
Initial Cost to the Company [Abstract]
Land	460	[12],[4]
Buildings and Improvements	0	[12],[4]
Costs Capitalized Subsequent to Acquisition	3,010	[12],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	460	[12],[4]
Buildings and Improvements	3,010	[12],[4]
Total	3,470	[12],[4]
Accumulated Depreciation	1,064	[12],[4]
Year Acquired	2005	[12],[4]
Year Constructed	2008	[12],[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Beltway Crossing V [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,004	[4],[8]
Initial Cost to the Company [Abstract]
Land	701	[4],[8]
Buildings and Improvements	0	[4],[8]
Costs Capitalized Subsequent to Acquisition	4,709	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	701	[4],[8]
Buildings and Improvements	4,709	[4],[8]
Total	5,410	[4],[8]
Accumulated Depreciation	1,429	[4],[8]
Year Acquired	2005	[4],[8]
Year Constructed	2008	[4],[8]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Beltway Crossing VI [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,619	[4],[6]
Initial Cost to the Company [Abstract]
Land	618	[4],[6]
Buildings and Improvements	0	[4],[6]
Costs Capitalized Subsequent to Acquisition	6,017	[4],[6]
Gross Amount at which Carried at Close of Period [Abstract]
Land	618	[4],[6]
Buildings and Improvements	6,017	[4],[6]
Total	6,635	[4],[6]
Accumulated Depreciation	1,100	[4],[6]
Year Acquired	2005	[4],[6]
Year Constructed	2008	[4],[6]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Beltway Crossing VII [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,590	[4],[6]
Initial Cost to the Company [Abstract]
Land	765	[4],[6]
Buildings and Improvements	0	[4],[6]
Costs Capitalized Subsequent to Acquisition	5,828	[4],[6]
Gross Amount at which Carried at Close of Period [Abstract]
Land	765	[4],[6]
Buildings and Improvements	5,828	[4],[6]
Total	6,593	[4],[6]
Accumulated Depreciation	1,315	[4],[6]
Year Acquired	2005	[4],[6]
Year Constructed	2009	[4],[6]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Beltway Crossing VIII [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	721	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	4,576	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	721	[4]
Buildings and Improvements	4,576	[4]
Total	5,297	[4]
Accumulated Depreciation	467	[4]
Year Acquired	2005	[4]
Year Constructed	2011	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Beltway Crossing IX [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	418	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	2,113	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	418	[4]
Buildings and Improvements	2,113	[4]
Total	2,531	[4]
Accumulated Depreciation	104	[4]
Year Acquired	2007	[4]
Year Constructed	2012	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Kirby Business Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,797	[4],[5]
Initial Cost to the Company [Abstract]
Land	530	[4],[5]
Buildings and Improvements	3,153	[4],[5]
Costs Capitalized Subsequent to Acquisition	339	[4],[5]
Gross Amount at which Carried at Close of Period [Abstract]
Land	530	[4],[5]
Buildings and Improvements	3,492	[4],[5]
Total	4,022	[4],[5]
Accumulated Depreciation	1,164	[4],[5]
Year Acquired	2004	[4],[5]
Year Constructed	1980	[4],[5]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Clay Campbell Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	742	[4]
Buildings and Improvements	2,998	[4]
Costs Capitalized Subsequent to Acquisition	384	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	742	[4]
Buildings and Improvements	3,382	[4]
Total	4,124	[4]
Accumulated Depreciation	1,345	[4]
Year Acquired	2005	[4]
Year Constructed	1982	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston Intl Business Ctr 31B [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	546	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	3,075	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	546	[4]
Buildings and Improvements	3,075	[4]
Total	3,621	[4]
Accumulated Depreciation	106	[4]
Year Acquired	2008	[4]
Year Constructed	2012	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston 33 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,166	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	7,849	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,166	[4]
Buildings and Improvements	7,849	[4]
Total	9,015	[4]
Accumulated Depreciation	257	[4]
Year Acquired	2011	[4]
Year Constructed	2013	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston 34 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	439	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	3,332	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	439	[4]
Buildings and Improvements	3,332	[4]
Total	3,771	[4]
Accumulated Depreciation	70	[4]
Year Acquired	2005	[4]
Year Constructed	2012	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston 35 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	340	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	2,470	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	340	[4]
Buildings and Improvements	2,470	[4]
Total	2,810	[4]
Accumulated Depreciation	35	[4]
Year Acquired	2005	[4]
Year Constructed	2012	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston 36 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	685	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	4,795	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	685	[4]
Buildings and Improvements	4,795	[4]
Total	5,480	[4]
Accumulated Depreciation	63	[4]
Year Acquired	2011	[4]
Year Constructed	2013	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | World Houston 38 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,053	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	7,112	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,053	[4]
Buildings and Improvements	7,112	[4]
Total	8,165	[4]
Accumulated Depreciation	67	[4]
Year Acquired	2011	[4]
Year Constructed	2013	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Beltway Crossing X [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	733	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	3,871	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	733	[4]
Buildings and Improvements	3,871	[4]
Total	4,604	[4]
Accumulated Depreciation	159	[4]
Year Acquired	2007	[4]
Year Constructed	2012	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Beltway Crossing XI [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	690	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	4,092	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	690	[4]
Buildings and Improvements	4,092	[4]
Total	4,782	[4]
Accumulated Depreciation	50	[4]
Year Acquired	2007	[4]
Year Constructed	2013	[4]
Industrial [Member] | TEXAS [Member] | Houston [Member] | Ten West Crossing 1 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	566	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	2,962	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	566	[4]
Buildings and Improvements	2,962	[4]
Total	3,528	[4]
Accumulated Depreciation	81	[4]
Year Acquired	2012	[4]
Year Constructed	2013	[4]
Industrial [Member] | TEXAS [Member] | El Paso [Member] | Butterfield Trail [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	0	[4]
Buildings and Improvements	20,725	[4]
Costs Capitalized Subsequent to Acquisition	7,155	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	0	[4]
Buildings and Improvements	27,880	[4]
Total	27,880	[4]
Accumulated Depreciation	15,211	[4]
Year Acquired	1997/2000	[4]
Year Constructed	1987/95	[4]
Industrial [Member] | TEXAS [Member] | El Paso [Member] | Rojas Commerce Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	5,089	[13],[4]
Initial Cost to the Company [Abstract]
Land	900	[13],[4]
Buildings and Improvements	3,659	[13],[4]
Costs Capitalized Subsequent to Acquisition	2,742	[13],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	900	[13],[4]
Buildings and Improvements	6,401	[13],[4]
Total	7,301	[13],[4]
Accumulated Depreciation	4,366	[13],[4]
Year Acquired	1999	[13],[4]
Year Constructed	1986	[13],[4]
Industrial [Member] | TEXAS [Member] | El Paso [Member] | Americas Ten Business Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,751	[4],[5]
Initial Cost to the Company [Abstract]
Land	526	[4],[5]
Buildings and Improvements	2,778	[4],[5]
Costs Capitalized Subsequent to Acquisition	1,159	[4],[5]
Gross Amount at which Carried at Close of Period [Abstract]
Land	526	[4],[5]
Buildings and Improvements	3,937	[4],[5]
Total	4,463	[4],[5]
Accumulated Depreciation	1,921	[4],[5]
Year Acquired	2001	[4],[5]
Year Constructed	2003	[4],[5]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Alamo Downs Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	6,135	[14],[4]
Initial Cost to the Company [Abstract]
Land	1,342	[14],[4]
Buildings and Improvements	6,338	[14],[4]
Costs Capitalized Subsequent to Acquisition	1,116	[14],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,342	[14],[4]
Buildings and Improvements	7,454	[14],[4]
Total	8,796	[14],[4]
Accumulated Depreciation	3,535	[14],[4]
Year Acquired	2004	[14],[4]
Year Constructed	1986/2002	[14],[4]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Arion Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	28,507	[14],[4]
Initial Cost to the Company [Abstract]
Land	4,143	[14],[4]
Buildings and Improvements	31,432	[14],[4]
Costs Capitalized Subsequent to Acquisition	5,294	[14],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	4,143	[14],[4]
Buildings and Improvements	36,726	[14],[4]
Total	40,869	[14],[4]
Accumulated Depreciation	13,678	[14],[4]
Year Acquired	2005	[14],[4]
Year Constructed	1988-2000/06	[14],[4]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Arion 14 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,602	[14],[4]
Initial Cost to the Company [Abstract]
Land	423	[14],[4]
Buildings and Improvements	0	[14],[4]
Costs Capitalized Subsequent to Acquisition	3,307	[14],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	423	[14],[4]
Buildings and Improvements	3,307	[14],[4]
Total	3,730	[14],[4]
Accumulated Depreciation	1,050	[14],[4]
Year Acquired	2005	[14],[4]
Year Constructed	2006	[14],[4]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Arion 16 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,760	[11],[4]
Initial Cost to the Company [Abstract]
Land	427	[11],[4]
Buildings and Improvements	0	[11],[4]
Costs Capitalized Subsequent to Acquisition	3,485	[11],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	427	[11],[4]
Buildings and Improvements	3,485	[11],[4]
Total	3,912	[11],[4]
Accumulated Depreciation	821	[11],[4]
Year Acquired	2005	[11],[4]
Year Constructed	2007	[11],[4]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Arion 17 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,191	[14],[4]
Initial Cost to the Company [Abstract]
Land	616	[14],[4]
Buildings and Improvements	0	[14],[4]
Costs Capitalized Subsequent to Acquisition	3,958	[14],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	616	[14],[4]
Buildings and Improvements	3,958	[14],[4]
Total	4,574	[14],[4]
Accumulated Depreciation	1,576	[14],[4]
Year Acquired	2005	[14],[4]
Year Constructed	2007	[14],[4]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Arion 18 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	1,909	[4],[6]
Initial Cost to the Company [Abstract]
Land	418	[4],[6]
Buildings and Improvements	0	[4],[6]
Costs Capitalized Subsequent to Acquisition	2,324	[4],[6]
Gross Amount at which Carried at Close of Period [Abstract]
Land	418	[4],[6]
Buildings and Improvements	2,324	[4],[6]
Total	2,742	[4],[6]
Accumulated Depreciation	784	[4],[6]
Year Acquired	2005	[4],[6]
Year Constructed	2008	[4],[6]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Wetmore Business Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	9,819	[12],[4]
Initial Cost to the Company [Abstract]
Land	1,494	[12],[4]
Buildings and Improvements	10,804	[12],[4]
Costs Capitalized Subsequent to Acquisition	2,776	[12],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,494	[12],[4]
Buildings and Improvements	13,580	[12],[4]
Total	15,074	[12],[4]
Accumulated Depreciation	5,393	[12],[4]
Year Acquired	2005	[12],[4]
Year Constructed	1998/99	[12],[4]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Wetmore Phase II, Building A [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,768	[4],[8]
Initial Cost to the Company [Abstract]
Land	412	[4],[8]
Buildings and Improvements	0	[4],[8]
Costs Capitalized Subsequent to Acquisition	3,328	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	412	[4],[8]
Buildings and Improvements	3,328	[4],[8]
Total	3,740	[4],[8]
Accumulated Depreciation	1,145	[4],[8]
Year Acquired	2006	[4],[8]
Year Constructed	2008	[4],[8]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Wetmore Phase II, Building B [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,009	[4],[8]
Initial Cost to the Company [Abstract]
Land	505	[4],[8]
Buildings and Improvements	0	[4],[8]
Costs Capitalized Subsequent to Acquisition	3,560	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	505	[4],[8]
Buildings and Improvements	3,560	[4],[8]
Total	4,065	[4],[8]
Accumulated Depreciation	995	[4],[8]
Year Acquired	2006	[4],[8]
Year Constructed	2008	[4],[8]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Wetmore Phase II, Building C [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,027	[4],[8]
Initial Cost to the Company [Abstract]
Land	546	[4],[8]
Buildings and Improvements	0	[4],[8]
Costs Capitalized Subsequent to Acquisition	3,543	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	546	[4],[8]
Buildings and Improvements	3,543	[4],[8]
Total	4,089	[4],[8]
Accumulated Depreciation	453	[4],[8]
Year Acquired	2006	[4],[8]
Year Constructed	2008	[4],[8]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Wetmore Phase II, Building D [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	6,183	[4],[8]
Initial Cost to the Company [Abstract]
Land	1,056	[4],[8]
Buildings and Improvements	0	[4],[8]
Costs Capitalized Subsequent to Acquisition	7,297	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,056	[4],[8]
Buildings and Improvements	7,297	[4],[8]
Total	8,353	[4],[8]
Accumulated Depreciation	1,498	[4],[8]
Year Acquired	2006	[4],[8]
Year Constructed	2008	[4],[8]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Fairgrounds Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	7,642	[12],[4]
Initial Cost to the Company [Abstract]
Land	1,644	[12],[4]
Buildings and Improvements	8,209	[12],[4]
Costs Capitalized Subsequent to Acquisition	1,879	[12],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,644	[12],[4]
Buildings and Improvements	10,088	[12],[4]
Total	11,732	[12],[4]
Accumulated Depreciation	3,508	[12],[4]
Year Acquired	2007	[12],[4]
Year Constructed	1985/86	[12],[4]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Rittiman Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,083	[4]
Buildings and Improvements	6,649	[4]
Costs Capitalized Subsequent to Acquisition	265	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,083	[4]
Buildings and Improvements	6,914	[4]
Total	7,997	[4]
Accumulated Depreciation	488	[4]
Year Acquired	2011	[4]
Year Constructed	2000	[4]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Thousand Oaks I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	607	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	4,067	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	607	[4]
Buildings and Improvements	4,067	[4]
Total	4,674	[4]
Accumulated Depreciation	153	[4]
Year Acquired	2008	[4]
Year Constructed	2012	[4]
Industrial [Member] | TEXAS [Member] | San Antonio [Member] | Thousand Oaks 2 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	794	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	4,719	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	794	[4]
Buildings and Improvements	4,719	[4]
Total	5,513	[4]
Accumulated Depreciation	187	[4]
Year Acquired	2008	[4]
Year Constructed	2012	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Broadway Industrial Park I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	837	[4]
Buildings and Improvements	3,349	[4]
Costs Capitalized Subsequent to Acquisition	823	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	837	[4]
Buildings and Improvements	4,172	[4]
Total	5,009	[4]
Accumulated Depreciation	2,266	[4]
Year Acquired	1996	[4]
Year Constructed	1971	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Broadway Industrial Park II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	455	[4]
Buildings and Improvements	482	[4]
Costs Capitalized Subsequent to Acquisition	161	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	455	[4]
Buildings and Improvements	643	[4]
Total	1,098	[4]
Accumulated Depreciation	381	[4]
Year Acquired	1999	[4]
Year Constructed	1971	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Broadway Industrial Park III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	775	[4]
Buildings and Improvements	1,742	[4]
Costs Capitalized Subsequent to Acquisition	525	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	775	[4]
Buildings and Improvements	2,267	[4]
Total	3,042	[4]
Accumulated Depreciation	1,114	[4]
Year Acquired	2000	[4]
Year Constructed	1983	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Broadway Industrial Park IV [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	380	[4]
Buildings and Improvements	1,652	[4]
Costs Capitalized Subsequent to Acquisition	783	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	380	[4]
Buildings and Improvements	2,435	[4]
Total	2,815	[4]
Accumulated Depreciation	1,208	[4]
Year Acquired	2000	[4]
Year Constructed	1986	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Broadway Industrial Park V [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	353	[4]
Buildings and Improvements	1,090	[4]
Costs Capitalized Subsequent to Acquisition	120	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	353	[4]
Buildings and Improvements	1,210	[4]
Total	1,563	[4]
Accumulated Depreciation	576	[4]
Year Acquired	2002	[4]
Year Constructed	1980	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Broadway Industrial Park VI [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,180	[11],[4]
Initial Cost to the Company [Abstract]
Land	599	[11],[4]
Buildings and Improvements	1,855	[11],[4]
Costs Capitalized Subsequent to Acquisition	636	[11],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	599	[11],[4]
Buildings and Improvements	2,491	[11],[4]
Total	3,090	[11],[4]
Accumulated Depreciation	1,195	[11],[4]
Year Acquired	2002	[11],[4]
Year Constructed	1979	[11],[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Broadway Industrial Park VII [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	450	[4]
Buildings and Improvements	650	[4]
Costs Capitalized Subsequent to Acquisition	95	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	450	[4]
Buildings and Improvements	745	[4]
Total	1,195	[4]
Accumulated Depreciation	63	[4]
Year Acquired	2011	[4]
Year Constructed	1999	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Kyrene Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	76	[4]
Initial Cost to the Company [Abstract]
Land	1,490	[4]
Buildings and Improvements	4,453	[4]
Costs Capitalized Subsequent to Acquisition	1,269	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,490	[4]
Buildings and Improvements	5,722	[4]
Total	7,212	[4]
Accumulated Depreciation	3,153	[4]
Year Acquired	1999	[4]
Year Constructed	1981/2001	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Southpark Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	918	[4]
Buildings and Improvements	2,738	[4]
Costs Capitalized Subsequent to Acquisition	609	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	918	[4]
Buildings and Improvements	3,347	[4]
Total	4,265	[4]
Accumulated Depreciation	1,317	[4]
Year Acquired	2001	[4]
Year Constructed	2000	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Santan 10 Distribution Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,633	[14],[4]
Initial Cost to the Company [Abstract]
Land	846	[14],[4]
Buildings and Improvements	2,647	[14],[4]
Costs Capitalized Subsequent to Acquisition	282	[14],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	846	[14],[4]
Buildings and Improvements	2,929	[14],[4]
Total	3,775	[14],[4]
Accumulated Depreciation	1,174	[14],[4]
Year Acquired	2001	[14],[4]
Year Constructed	2005	[14],[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Santan 10 Distribution Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,379	[11],[4]
Initial Cost to the Company [Abstract]
Land	1,088	[11],[4]
Buildings and Improvements	0	[11],[4]
Costs Capitalized Subsequent to Acquisition	5,119	[11],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,088	[11],[4]
Buildings and Improvements	5,119	[11],[4]
Total	6,207	[11],[4]
Accumulated Depreciation	1,648	[11],[4]
Year Acquired	2004	[11],[4]
Year Constructed	2007	[11],[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Metro Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,927	[4]
Buildings and Improvements	7,708	[4]
Costs Capitalized Subsequent to Acquisition	5,665	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,927	[4]
Buildings and Improvements	13,373	[4]
Total	15,300	[4]
Accumulated Depreciation	8,162	[4]
Year Acquired	1996	[4]
Year Constructed	1977/79	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | 35th Avenue Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	418	[4]
Buildings and Improvements	2,381	[4]
Costs Capitalized Subsequent to Acquisition	412	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	418	[4]
Buildings and Improvements	2,793	[4]
Total	3,211	[4]
Accumulated Depreciation	1,269	[4]
Year Acquired	1997	[4]
Year Constructed	1967	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | 51st Avenue Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	300	[4]
Buildings and Improvements	2,029	[4]
Costs Capitalized Subsequent to Acquisition	805	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	300	[4]
Buildings and Improvements	2,834	[4]
Total	3,134	[4]
Accumulated Depreciation	1,585	[4]
Year Acquired	1998	[4]
Year Constructed	1987	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | East University Distribution Center I and II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,783	[11],[4]
Initial Cost to the Company [Abstract]
Land	1,120	[11],[4]
Buildings and Improvements	4,482	[11],[4]
Costs Capitalized Subsequent to Acquisition	1,179	[11],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,120	[11],[4]
Buildings and Improvements	5,661	[11],[4]
Total	6,781	[11],[4]
Accumulated Depreciation	2,962	[11],[4]
Year Acquired	1998	[11],[4]
Year Constructed	1987/89	[11],[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | East University Distribution Center III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	444	[4]
Buildings and Improvements	698	[4]
Costs Capitalized Subsequent to Acquisition	99	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	444	[4]
Buildings and Improvements	797	[4]
Total	1,241	[4]
Accumulated Depreciation	127	[4]
Year Acquired	2010	[4]
Year Constructed	1981	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | 55th Avenue Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,806	[11],[4]
Initial Cost to the Company [Abstract]
Land	912	[11],[4]
Buildings and Improvements	3,717	[11],[4]
Costs Capitalized Subsequent to Acquisition	767	[11],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	917	[11],[4]
Buildings and Improvements	4,479	[11],[4]
Total	5,396	[11],[4]
Accumulated Depreciation	2,468	[11],[4]
Year Acquired	1998	[11],[4]
Year Constructed	1987	[11],[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Interstate Commons Dist Ctr I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	798	[4]
Buildings and Improvements	3,632	[4]
Costs Capitalized Subsequent to Acquisition	1,537	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	798	[4]
Buildings and Improvements	5,169	[4]
Total	5,967	[4]
Accumulated Depreciation	2,337	[4]
Year Acquired	1999	[4]
Year Constructed	1988	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Interstate Commons Dist Ctr II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	320	[4]
Buildings and Improvements	2,448	[4]
Costs Capitalized Subsequent to Acquisition	365	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	320	[4]
Buildings and Improvements	2,813	[4]
Total	3,133	[4]
Accumulated Depreciation	1,216	[4]
Year Acquired	1999	[4]
Year Constructed	2000	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Interstate Commons Dist Ctr III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	242	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	2,954	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	242	[4]
Buildings and Improvements	2,954	[4]
Total	3,196	[4]
Accumulated Depreciation	691	[4]
Year Acquired	2000	[4]
Year Constructed	2008	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Airport Commons [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,000	[4]
Buildings and Improvements	1,510	[4]
Costs Capitalized Subsequent to Acquisition	1,093	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,000	[4]
Buildings and Improvements	2,603	[4]
Total	3,603	[4]
Accumulated Depreciation	1,141	[4]
Year Acquired	2003	[4]
Year Constructed	1971	[4]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | 40th Avenue Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,982	[4],[8]
Initial Cost to the Company [Abstract]
Land	703	[4],[8]
Buildings and Improvements	0	[4],[8]
Costs Capitalized Subsequent to Acquisition	6,028	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	703	[4],[8]
Buildings and Improvements	6,028	[4],[8]
Total	6,731	[4],[8]
Accumulated Depreciation	1,269	[4],[8]
Year Acquired	2004	[4],[8]
Year Constructed	2008	[4],[8]
Industrial [Member] | ARIZONA [Member] | Phoenix Area [Member] | Sky Harbor Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	5,839	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	21,145	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	5,839	[4]
Buildings and Improvements	21,145	[4]
Total	26,984	[4]
Accumulated Depreciation	3,956	[4]
Year Acquired	2006	[4]
Year Constructed	2008	[4]
Industrial [Member] | ARIZONA [Member] | Tucson [Member] | Country Club I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,792	[4],[7]
Initial Cost to the Company [Abstract]
Land	506	[4],[7]
Buildings and Improvements	3,564	[4],[7]
Costs Capitalized Subsequent to Acquisition	2,173	[4],[7]
Gross Amount at which Carried at Close of Period [Abstract]
Land	693	[4],[7]
Buildings and Improvements	5,550	[4],[7]
Total	6,243	[4],[7]
Accumulated Depreciation	2,017	[4],[7]
Year Acquired	1997/2003	[4],[7]
Year Constructed	1994/2003	[4],[7]
Industrial [Member] | ARIZONA [Member] | Tucson [Member] | Country Club II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	442	[4]
Buildings and Improvements	3,381	[4]
Costs Capitalized Subsequent to Acquisition	37	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	442	[4]
Buildings and Improvements	3,418	[4]
Total	3,860	[4]
Accumulated Depreciation	856	[4]
Year Acquired	2007	[4]
Year Constructed	2000	[4]
Industrial [Member] | ARIZONA [Member] | Tucson [Member] | Country Club III and IV [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,407	[4]
Buildings and Improvements	0	[4]
Costs Capitalized Subsequent to Acquisition	11,755	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,575	[4]
Buildings and Improvements	11,587	[4]
Total	13,162	[4]
Accumulated Depreciation	2,165	[4]
Year Acquired	2007	[4]
Year Constructed	2009	[4]
Industrial [Member] | ARIZONA [Member] | Tucson [Member] | Airport Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,103	[4]
Buildings and Improvements	4,672	[4]
Costs Capitalized Subsequent to Acquisition	1,533	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,103	[4]
Buildings and Improvements	6,205	[4]
Total	7,308	[4]
Accumulated Depreciation	3,211	[4]
Year Acquired	1998	[4]
Year Constructed	1995	[4]
Industrial [Member] | ARIZONA [Member] | Tucson [Member] | Southpointe Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	0	[4]
Buildings and Improvements	3,982	[4]
Costs Capitalized Subsequent to Acquisition	2,950	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	0	[4]
Buildings and Improvements	6,932	[4]
Total	6,932	[4]
Accumulated Depreciation	3,499	[4]
Year Acquired	1999	[4]
Year Constructed	1989	[4]
Industrial [Member] | ARIZONA [Member] | Tucson [Member] | Benan Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	707	[4]
Buildings and Improvements	1,842	[4]
Costs Capitalized Subsequent to Acquisition	626	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	707	[4]
Buildings and Improvements	2,468	[4]
Total	3,175	[4]
Accumulated Depreciation	1,136	[4]
Year Acquired	2005	[4]
Year Constructed	2001	[4]
Industrial [Member] | NORTH CAROLINA [Member] | Charlotte [Member] | NorthPark Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	15,498	[11],[4]
Initial Cost to the Company [Abstract]
Land	2,758	[11],[4]
Buildings and Improvements	15,932	[11],[4]
Costs Capitalized Subsequent to Acquisition	3,278	[11],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,758	[11],[4]
Buildings and Improvements	19,210	[11],[4]
Total	21,968	[11],[4]
Accumulated Depreciation	6,234	[11],[4]
Year Acquired	2006	[11],[4]
Year Constructed	1987-89	[11],[4]
Industrial [Member] | NORTH CAROLINA [Member] | Charlotte [Member] | Lindbergh Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	470	[4]
Buildings and Improvements	3,401	[4]
Costs Capitalized Subsequent to Acquisition	303	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	470	[4]
Buildings and Improvements	3,704	[4]
Total	4,174	[4]
Accumulated Depreciation	1,163	[4]
Year Acquired	2007	[4]
Year Constructed	2001/03	[4]
Industrial [Member] | NORTH CAROLINA [Member] | Charlotte [Member] | Commerce Park I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	3,738	[12],[4]
Initial Cost to the Company [Abstract]
Land	765	[12],[4]
Buildings and Improvements	4,303	[12],[4]
Costs Capitalized Subsequent to Acquisition	671	[12],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	765	[12],[4]
Buildings and Improvements	4,974	[12],[4]
Total	5,739	[12],[4]
Accumulated Depreciation	1,399	[12],[4]
Year Acquired	2007	[12],[4]
Year Constructed	1983	[12],[4]
Industrial [Member] | NORTH CAROLINA [Member] | Charlotte [Member] | Commerce Park II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	1,459	[4],[6]
Initial Cost to the Company [Abstract]
Land	335	[4],[6]
Buildings and Improvements	1,603	[4],[6]
Costs Capitalized Subsequent to Acquisition	158	[4],[6]
Gross Amount at which Carried at Close of Period [Abstract]
Land	335	[4],[6]
Buildings and Improvements	1,761	[4],[6]
Total	2,096	[4],[6]
Accumulated Depreciation	322	[4],[6]
Year Acquired	2010	[4],[6]
Year Constructed	1987	[4],[6]
Industrial [Member] | NORTH CAROLINA [Member] | Charlotte [Member] | Commerce Park III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,127	[4],[6]
Initial Cost to the Company [Abstract]
Land	558	[4],[6]
Buildings and Improvements	2,225	[4],[6]
Costs Capitalized Subsequent to Acquisition	272	[4],[6]
Gross Amount at which Carried at Close of Period [Abstract]
Land	558	[4],[6]
Buildings and Improvements	2,497	[4],[6]
Total	3,055	[4],[6]
Accumulated Depreciation	475	[4],[6]
Year Acquired	2010	[4],[6]
Year Constructed	1981	[4],[6]
Industrial [Member] | NORTH CAROLINA [Member] | Charlotte [Member] | Nations Ford Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	14,641	[12],[4]
Initial Cost to the Company [Abstract]
Land	3,924	[12],[4]
Buildings and Improvements	16,171	[12],[4]
Costs Capitalized Subsequent to Acquisition	2,380	[12],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	3,924	[12],[4]
Buildings and Improvements	18,551	[12],[4]
Total	22,475	[12],[4]
Accumulated Depreciation	6,240	[12],[4]
Year Acquired	2007	[12],[4]
Year Constructed	1989/94	[12],[4]
Industrial [Member] | NORTH CAROLINA [Member] | Charlotte [Member] | Airport Commerce Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,454	[4]
Buildings and Improvements	10,136	[4]
Costs Capitalized Subsequent to Acquisition	922	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,454	[4]
Buildings and Improvements	11,058	[4]
Total	12,512	[4]
Accumulated Depreciation	2,562	[4]
Year Acquired	2008	[4]
Year Constructed	2001/02	[4]
Industrial [Member] | NORTH CAROLINA [Member] | Charlotte [Member] | Interchange Park I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	986	[4]
Buildings and Improvements	7,949	[4]
Costs Capitalized Subsequent to Acquisition	454	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	986	[4]
Buildings and Improvements	8,403	[4]
Total	9,389	[4]
Accumulated Depreciation	1,722	[4]
Year Acquired	2008	[4]
Year Constructed	1989	[4]
Industrial [Member] | NORTH CAROLINA [Member] | Charlotte [Member] | Interchange Park II Acquisition [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	746	[4]
Buildings and Improvements	1,456	[4]
Costs Capitalized Subsequent to Acquisition	21	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	746	[4]
Buildings and Improvements	1,477	[4]
Total	2,223	[4]
Accumulated Depreciation	22	[4]
Year Acquired	2013	[4]
Year Constructed	2000	[4]
Industrial [Member] | NORTH CAROLINA [Member] | Charlotte [Member] | Ridge Creek Distribution Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	1,284	[4]
Buildings and Improvements	13,163	[4]
Costs Capitalized Subsequent to Acquisition	777	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,284	[4]
Buildings and Improvements	13,940	[4]
Total	15,224	[4]
Accumulated Depreciation	2,525	[4]
Year Acquired	2008	[4]
Year Constructed	2006	[4]
Industrial [Member] | NORTH CAROLINA [Member] | Charlotte [Member] | Ridge Creek Distribution Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	10,433	[4],[6]
Initial Cost to the Company [Abstract]
Land	3,033	[4],[6]
Buildings and Improvements	11,497	[4],[6]
Costs Capitalized Subsequent to Acquisition	459	[4],[6]
Gross Amount at which Carried at Close of Period [Abstract]
Land	3,033	[4],[6]
Buildings and Improvements	11,956	[4],[6]
Total	14,989	[4],[6]
Accumulated Depreciation	823	[4],[6]
Year Acquired	2011	[4],[6]
Year Constructed	2003	[4],[6]
Industrial [Member] | NORTH CAROLINA [Member] | Charlotte [Member] | Waterford Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	654	[4]
Buildings and Improvements	3,392	[4]
Costs Capitalized Subsequent to Acquisition	396	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	654	[4]
Buildings and Improvements	3,788	[4]
Total	4,442	[4]
Accumulated Depreciation	589	[4]
Year Acquired	2008	[4]
Year Constructed	2000	[4]
Industrial [Member] | NORTH CAROLINA [Member] | Charlotte [Member] | Lakeview Business [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,727	[4],[6]
Initial Cost to the Company [Abstract]
Land	1,392	[4],[6]
Buildings and Improvements	5,068	[4],[6]
Costs Capitalized Subsequent to Acquisition	330	[4],[6]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,392	[4],[6]
Buildings and Improvements	5,398	[4],[6]
Total	6,790	[4],[6]
Accumulated Depreciation	516	[4],[6]
Year Acquired	2011	[4],[6]
Year Constructed	1996	[4],[6]
Industrial [Member] | LOUISIANA | New Orleans [Member] | Elmwood Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	2,861	[4]
Buildings and Improvements	6,337	[4]
Costs Capitalized Subsequent to Acquisition	3,589	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,861	[4]
Buildings and Improvements	9,926	[4]
Total	12,787	[4]
Accumulated Depreciation	6,495	[4]
Year Acquired	1997	[4]
Year Constructed	1979	[4]
Industrial [Member] | LOUISIANA | New Orleans [Member] | Riverbend Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	2,592	[4]
Buildings and Improvements	17,623	[4]
Costs Capitalized Subsequent to Acquisition	5,350	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,592	[4]
Buildings and Improvements	22,973	[4]
Total	25,565	[4]
Accumulated Depreciation	10,996	[4]
Year Acquired	1997	[4]
Year Constructed	1984	[4]
Industrial [Member] | COLORADO [Member] | Denver [Member] | Rampart Distribution Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,409	[14],[4]
Initial Cost to the Company [Abstract]
Land	1,023	[14],[4]
Buildings and Improvements	3,861	[14],[4]
Costs Capitalized Subsequent to Acquisition	1,438	[14],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,023	[14],[4]
Buildings and Improvements	5,299	[14],[4]
Total	6,322	[14],[4]
Accumulated Depreciation	3,534	[14],[4]
Year Acquired	1988	[14],[4]
Year Constructed	1987	[14],[4]
Industrial [Member] | COLORADO [Member] | Denver [Member] | Rampart Distribution Center II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	2,905	[14],[4]
Initial Cost to the Company [Abstract]
Land	230	[14],[4]
Buildings and Improvements	2,977	[14],[4]
Costs Capitalized Subsequent to Acquisition	958	[14],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	230	[14],[4]
Buildings and Improvements	3,935	[14],[4]
Total	4,165	[14],[4]
Accumulated Depreciation	2,443	[14],[4]
Year Acquired	1996/97	[14],[4]
Year Constructed	1996/97	[14],[4]
Industrial [Member] | COLORADO [Member] | Denver [Member] | Rampart Distribution Center III [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,442	[14],[4]
Initial Cost to the Company [Abstract]
Land	1,098	[14],[4]
Buildings and Improvements	3,884	[14],[4]
Costs Capitalized Subsequent to Acquisition	1,386	[14],[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,098	[14],[4]
Buildings and Improvements	5,270	[14],[4]
Total	6,368	[14],[4]
Accumulated Depreciation	2,465	[14],[4]
Year Acquired	1997/98	[14],[4]
Year Constructed	1999	[14],[4]
Industrial [Member] | COLORADO [Member] | Denver [Member] | Concord Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,342	[4],[6]
Initial Cost to the Company [Abstract]
Land	1,051	[4],[6]
Buildings and Improvements	4,773	[4],[6]
Costs Capitalized Subsequent to Acquisition	413	[4],[6]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,051	[4],[6]
Buildings and Improvements	5,186	[4],[6]
Total	6,237	[4],[6]
Accumulated Depreciation	1,522	[4],[6]
Year Acquired	2007	[4],[6]
Year Constructed	2000	[4],[6]
Industrial [Member] | COLORADO [Member] | Denver [Member] | Centennial Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	4,268	[4],[8]
Initial Cost to the Company [Abstract]
Land	750	[4],[8]
Buildings and Improvements	3,319	[4],[8]
Costs Capitalized Subsequent to Acquisition	1,697	[4],[8]
Gross Amount at which Carried at Close of Period [Abstract]
Land	750	[4],[8]
Buildings and Improvements	5,016	[4],[8]
Total	5,766	[4],[8]
Accumulated Depreciation	1,175	[4],[8]
Year Acquired	2007	[4],[8]
Year Constructed	1990	[4],[8]
Industrial [Member] | NEVADA [Member] | Las Vegas [Member] | Arville Distribution Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	4,933	[4]
Buildings and Improvements	5,094	[4]
Costs Capitalized Subsequent to Acquisition	285	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	4,933	[4]
Buildings and Improvements	5,379	[4]
Total	10,312	[4]
Accumulated Depreciation	1,177	[4]
Year Acquired	2009	[4]
Year Constructed	1997	[4]
Industrial [Member] | MISSISSIPPI [Member] | Jackson area [Member] | Interchange Business Park [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	343	[4]
Buildings and Improvements	5,007	[4]
Costs Capitalized Subsequent to Acquisition	2,577	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	343	[4]
Buildings and Improvements	7,584	[4]
Total	7,927	[4]
Accumulated Depreciation	4,255	[4]
Year Acquired	1997	[4]
Year Constructed	1981	[4]
Industrial [Member] | MISSISSIPPI [Member] | Jackson area [Member] | Tower Automotive [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	0	[4]
Buildings and Improvements	9,958	[4]
Costs Capitalized Subsequent to Acquisition	1,199	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	17	[4]
Buildings and Improvements	11,140	[4]
Total	11,157	[4]
Accumulated Depreciation	3,739	[4]
Year Acquired	2001	[4]
Year Constructed	2002	[4]
Industrial [Member] | MISSISSIPPI [Member] | Jackson area [Member] | Metro Airport Commerce Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	303	[4]
Buildings and Improvements	1,479	[4]
Costs Capitalized Subsequent to Acquisition	968	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	303	[4]
Buildings and Improvements	2,447	[4]
Total	2,750	[4]
Accumulated Depreciation	1,312	[4]
Year Acquired	2001	[4]
Year Constructed	2003	[4]
Industrial [Member] | TENNESSEE [Member] | Memphis [Member] | Air Park Distribution Center I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	250	[4]
Buildings and Improvements	1,916	[4]
Costs Capitalized Subsequent to Acquisition	1,336	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	250	[4]
Buildings and Improvements	3,252	[4]
Total	3,502	[4]
Accumulated Depreciation	1,613	[4]
Year Acquired	1998	[4]
Year Constructed	1975	[4]
Industrial [Member] | OKLAHOMA [Member] | Oklahoma City [Member] | Northpointe Commerce Center [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[4]
Initial Cost to the Company [Abstract]
Land	777	[4]
Buildings and Improvements	3,113	[4]
Costs Capitalized Subsequent to Acquisition	841	[4]
Gross Amount at which Carried at Close of Period [Abstract]
Land	998	[4]
Buildings and Improvements	3,733	[4]
Total	4,731	[4]
Accumulated Depreciation	1,766	[4]
Year Acquired	1998	[4]
Year Constructed	1996/97	[4]
Industrial Development [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	1,198	[15]
Initial Cost to the Company [Abstract]
Land	66,642	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	82,125	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	72,993	[15]
Buildings and Improvements	75,774	[15]
Total	148,767	[15]
Accumulated Depreciation	42	[15]
Industrial Development [Member] | FLORIDA [Member] | Oak Creek land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	1,946	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	3,128	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,374	[15]
Buildings and Improvements	2,700	[15]
Total	5,074	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2005	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | FLORIDA [Member] | Madison land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	1,189	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	559	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,189	[15]
Buildings and Improvements	559	[15]
Total	1,748	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2012	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | FLORIDA [Member] | Horizon I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	991	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	4,310	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	991	[15]
Buildings and Improvements	4,310	[15]
Total	5,301	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2008	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | FLORIDA [Member] | Horizon land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	12,274	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	12,400	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	12,360	[15]
Buildings and Improvements	12,314	[15]
Total	24,674	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2008/09	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | FLORIDA [Member] | SunCoast land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	10,926	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	6,932	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	11,104	[15]
Buildings and Improvements	6,754	[15]
Total	17,858	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2006	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | North Stemmons land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	537	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	276	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	537	[15]
Buildings and Improvements	276	[15]
Total	813	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2001	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | Valwood land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	404	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	32	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	416	[15]
Buildings and Improvements	20	[15]
Total	436	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2012	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | World Houston International Business Ctr 37 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	759	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	4,620	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	759	[15]
Buildings and Improvements	4,620	[15]
Total	5,379	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2011	[15]
Year Constructed	2013	[15]
Industrial Development [Member] | TEXAS [Member] | World Houston 39 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	620	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	1,016	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	620	[15]
Buildings and Improvements	1,016	[15]
Total	1,636	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2011	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | World Houston 40 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	1,072	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	958	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,072	[15]
Buildings and Improvements	958	[15]
Total	2,030	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2011	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | World Houston Intl Business Ctr land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	1,628	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	1,081	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,628	[15]
Buildings and Improvements	1,081	[15]
Total	2,709	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2000/06	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | World Houston Intl Business Ctr land-expansion [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	4,718	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	7,004	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	9,540	[15]
Buildings and Improvements	2,182	[15]
Total	11,722	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2011	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | Ten West Crossing 2 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	829	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	3,260	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	833	[15]
Buildings and Improvements	3,256	[15]
Total	4,089	[15]
Accumulated Depreciation	26	[15]
Year Acquired	2012	[15]
Year Constructed	2013	[15]
Industrial Development [Member] | TEXAS [Member] | Ten West Crossing 3 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	609	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	3,760	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	613	[15]
Buildings and Improvements	3,756	[15]
Total	4,369	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2012	[15]
Year Constructed	2013	[15]
Industrial Development [Member] | TEXAS [Member] | Ten West Crossing 4 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	694	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	2,767	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	699	[15]
Buildings and Improvements	2,762	[15]
Total	3,461	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2012	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | Ten West Crossing 5 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	933	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	479	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	940	[15]
Buildings and Improvements	472	[15]
Total	1,412	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2012	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | Ten West Crossing land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	2,351	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	866	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,367	[15]
Buildings and Improvements	850	[15]
Total	3,217	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2012	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | Lee Road land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	3,068	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	2,152	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	3,822	[15]
Buildings and Improvements	1,398	[15]
Total	5,220	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2007	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | West Road land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	3,303	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	1,988	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	3,304	[15]
Buildings and Improvements	1,987	[15]
Total	5,291	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2012	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | Americas Ten Business Center II and III land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	1,365	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	1,079	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,365	[15]
Buildings and Improvements	1,079	[15]
Total	2,444	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2001	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | Thousand Oaks 3 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	772	[15]
Buildings and Improvements	0
Costs Capitalized Subsequent to Acquisition	3,528	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	772	[15]
Buildings and Improvements	3,528	[15]
Total	4,300	[15]
Accumulated Depreciation	16	[15]
Year Acquired	2008	[15]
Year Constructed	2013	[15]
Industrial Development [Member] | TEXAS [Member] | Alamo Ridge land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	2,288	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	2,232	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	2,288	[15]
Buildings and Improvements	2,232	[15]
Total	4,520	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2007	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | TEXAS [Member] | Thousand Oaks 4 [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	753	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	277	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	753	[15]
Buildings and Improvements	277	[15]
Total	1,030	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2013	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | ARIZONA [Member] | Airport Distribution Center II land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	300	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	117	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	300	[15]
Buildings and Improvements	117	[15]
Total	417	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2000	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | ARIZONA [Member] | Kyrene Land Member
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	3,220	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	1,153	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	3,219	[15]
Buildings and Improvements	1,154	[15]
Total	4,373	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2011	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | ARIZONA [Member] | Chandler Freeways land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	1,525	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	6,333	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	1,525	[15]
Buildings and Improvements	6,333	[15]
Total	7,858	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2012	[15]
Year Constructed	2013	[15]
Industrial Development [Member] | NORTH CAROLINA [Member] | Steele Creek I [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	879	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	3,388	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	890	[15]
Buildings and Improvements	3,377	[15]
Total	4,267	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2013	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | NORTH CAROLINA [Member] | Steele Creek II [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	879	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	2,462	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	890	[15]
Buildings and Improvements	2,451	[15]
Total	3,341	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2013	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | NORTH CAROLINA [Member] | Steele Creek land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	4,058	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	1,876	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	4,072	[15]
Buildings and Improvements	1,862	[15]
Total	5,934	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2013	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | NORTH CAROLINA [Member] | Airport Commerce Center III land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	855	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	565	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	855	[15]
Buildings and Improvements	565	[15]
Total	1,420	[15]
Accumulated Depreciation	0	[15]
Year Acquired	2008	[15]
Year Constructed	n/a	[15]
Industrial Development [Member] | COLORADO [Member] | Rampart IV [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	1,198	[14],[15]
Initial Cost to the Company [Abstract]
Land	590	[14],[15]
Buildings and Improvements	0	[14],[15]
Costs Capitalized Subsequent to Acquisition	1,128	[14],[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	589	[14],[15]
Buildings and Improvements	1,129	[14],[15]
Total	1,718	[14],[15]
Accumulated Depreciation	0	[14],[15]
Year Acquired	2012	[14],[15]
Year Constructed	n/a	[14],[15]
Industrial Development [Member] | MISSISSIPPI [Member] | Metro Airport Commerce Center II land [Member]
Real Estate and Accumulated Depreciation [Line Items]
Encumbrances	0	[15]
Initial Cost to the Company [Abstract]
Land	307	[15]
Buildings and Improvements	0	[15]
Costs Capitalized Subsequent to Acquisition	399	[15]
Gross Amount at which Carried at Close of Period [Abstract]
Land	307	[15]
Buildings and Improvements	399	[15]
Total	706	[15]
Accumulated Depreciation	$ 0	[15]
Year Acquired	2001	[15]
Year Constructed	n/a	[15]

[1] Changes in Real Estate Properties follow: Years Ended December 31,2013 2012 2011(In thousands)Balance at beginning of year $1,768,032 1,662,593 1,521,177Purchases of real estate properties 65,387 48,934 80,624Development of real estate properties76,240 55,404 42,148Improvements to real estate properties21,438 18,164 18,686Carrying amount of investments sold (3,475) (16,756) —Write-off of improvements (296) (307) (42)Balance at end of year (1) $1,927,326 1,768,032 1,662,593(1)Includes 20% noncontrolling interests in Castilian Research Center of $1,794,000 at December 31, 2013 and $1,794,000 at December 31, 2012 and in University Business Center of $6,496,000 and $6,418,000, respectively.Changes in the accumulated depreciation on real estate properties follow: Years Ended December 31,2013 2012 2011(In thousands)Balance at beginning of year $496,247 451,805 403,187Depreciation expense 54,284 51,564 48,648Accumulated depreciation on assets sold (126) (6,819) —Other (292) (303) (30)Balance at end of year $550,113 496,247 451,805

[2] The estimated aggregate cost of real estate properties at December 31, 2013 for federal income tax purposes was approximately $1,893,741,000 before estimated accumulated tax depreciation of $356,567,000. The federal income tax return for the year ended December 31, 2013, has not been filed and accordingly, this estimate is based on preliminary data.

[3] Includes 20% noncontrolling interests in Castilian Research Center of $1,794,000 at December 31, 2013 and $1,794,000 at December 31, 2012 and in University Business Center of $6,496,000 and $6,418,000, respectively.

[4] The Company computes depreciation using the straight-line method over the estimated useful lives of the buildings (generally 40 years) and improvements (generally 3 to 15 years).

[5] EastGroup has a $26,907,000 non-recourse first mortgage loan with an insurance company secured by Americas Ten I, Kirby, Palm River North I, II & III, Shady Trail, Westlake I & II, and World Houston 17.

[6] EastGroup has a $50,519,000 non-recourse first mortgage loan with an insurance company secured by Arion 18, Beltway VI & VII, Commerce Park II & III, Concord Distribution Center, Interstate Distribution Center V, VI & VII, Lakeview Business Center, Ridge Creek Distribution Center II, Southridge IV & V and World Houston 32.

[7] EastGroup has a $27,812,000 non-recourse first mortgage loan with an insurance company secured by Country Club I, Lake Pointe, Techway Southwest II, and World Houston 19 & 20.

[8] EastGroup has a $66,805,000 non-recourse first mortgage loan with an insurance company secured by 40th Avenue, Beltway V, Centennial Park, Executive Airport, Ocean View, Techway Southwest IV, Wetmore V-VIII, and World Houston 26, 28, 29 & 30.

[9] EastGroup has a $28,833,000 non-recourse first mortgage loan with an insurance company secured by Huntwood and Wiegman.

[10] EastGroup has a $59,087,000 limited recourse first mortgage loan with an insurance company secured by Dominguez, Industry Distribution Center I & III, Kingsview, Shaw, Walnut, and Washington. The loan has a recourse liability of $5 million which will be released based on the secured properties generating certain base rent amounts.

[11] EastGroup has a $57,368,000 non-recourse first mortgage loan with an insurance company secured by Arion 16, Broadway VI, Chino, East University I & II, Northpark I-IV, Santan 10 II, 55th Avenue, and World Houston 1 & 2 and 21 & 23.

[12] EastGroup has a $61,402,000 non-recourse first mortgage loan with an insurance company secured by 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.

[13] EastGroup has a $59,827,000 non-recourse first mortgage loan with an insurance company secured by America Plaza, Central Green, Glenmont I & II, Interstate I, II & III, Rojas, Stemmons Circle, Venture, West Loop I & II, and World Houston 3-9.

[14] EastGroup has a $60,131,000 non-recourse first mortgage loan with an insurance company secured by Alamo Downs, Arion 1-15 & 17, Rampart I, II, III & IV, Santan 10, and World Houston 16.

[15] The Company transfers development properties to real estate properties the earlier of 80% occupancy or one year after completion of the shell construction.