Schedule III - Real Estate and Accumulated Depreciation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Real Estate and Accumulated Depreciation [Line Items]
Gross Amount at Which Carried, Total	$ 3,924,531,000	$ 3,924,531,000	$ 4,800,025,000	$ 3,818,287,000	$ 3,924,531,000
Accumulated Depreciation and Amortization	875,777,000	1,053,467,000	1,058,704,000	875,777,000	907,937,000
Tax basis of total assets				3,300,000,000	$ 3,600,000,000
Real Estate:
Balance at the beginning of the year	3,924,531,000	4,438,209,000	4,800,025,000
Additions to/improvements of real estate	406,833,000	206,442,000	85,368,000
Assets disposed	(452,672,000)	(675,692,000)	(353,911,000)
Assets impaired	(8,953,000)	0	(46,461,000)
Write-offs of intangible assets	(36,429,000)	(33,067,000)	(37,188,000)
Write-offs of fully depreciated/amortized assets	(15,023,000)	(11,361,000)	(9,624,000)
Balance at the end of the year	3,818,287,000	3,924,531,000	4,438,209,000
Accumulated Depreciation and Amortization:
Balance at the beginning of the year	907,937,000	1,053,467,000	1,058,704,000
Depreciation and amortization expense	132,600,000	128,456,000	145,837,000
Assets disposed	(113,309,000)	(229,558,000)	(104,262,000)
Write-offs of intangible assets	(36,428,000)	(33,067,000)	(37,188,000)
Write-offs of fully depreciated/amortized assets	(15,023,000)	(11,361,000)	(9,624,000)
Balance at the end of the year	$ 875,777,000	$ 907,937,000	$ 1,053,467,000
Building
Real Estate and Accumulated Depreciation [Line Items]
Useful life	40 years
Wholly Owned Properties
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost, Land				474,206,000
Initial Cost, Buildings and Improvements				3,103,994,000
Initial Cost, Total				3,578,200,000
Costs Capitalized Subsequent to Acquisition				240,087,000
Gross Amount at Which Carried, Land				506,389,000
Gross Amount at Which Carried, Buildings and Improvements				3,311,898,000
Gross Amount at Which Carried, Total	$ 3,818,287,000			3,818,287,000
Accumulated Depreciation and Amortization	875,777,000			$ 875,777,000
Real Estate:
Balance at the end of the year	3,818,287,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 875,777,000
Minimum | Building improvements
Real Estate and Accumulated Depreciation [Line Items]
Useful life	5 years
Minimum | Land improvements
Real Estate and Accumulated Depreciation [Line Items]
Useful life	20 years
Maximum | Building improvements
Real Estate and Accumulated Depreciation [Line Items]
Useful life	25 years
Maximum | Land improvements
Real Estate and Accumulated Depreciation [Line Items]
Useful life	25 years
1430 ENCLAVE PARKWAY
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 7,100,000
Initial Cost, Buildings and Improvements				37,915,000
Initial Cost, Total				45,015,000
Costs Capitalized Subsequent to Acquisition				5,516,000
Gross Amount at Which Carried, Land				5,506,000
Gross Amount at Which Carried, Buildings and Improvements				45,025,000
Gross Amount at Which Carried, Total	$ 50,531,000			50,531,000
Accumulated Depreciation and Amortization	20,078,000			$ 20,078,000
Real Estate:
Balance at the end of the year	50,531,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 20,078,000
1430 ENCLAVE PARKWAY | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
1430 ENCLAVE PARKWAY | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
CRESCENT RIDGE II
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 7,700,000
Initial Cost, Buildings and Improvements				45,154,000
Initial Cost, Total				52,854,000
Costs Capitalized Subsequent to Acquisition				12,099,000
Gross Amount at Which Carried, Land				8,021,000
Gross Amount at Which Carried, Buildings and Improvements				56,932,000
Gross Amount at Which Carried, Total	$ 64,953,000			64,953,000
Accumulated Depreciation and Amortization	27,328,000			$ 27,328,000
Real Estate:
Balance at the end of the year	64,953,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 27,328,000
CRESCENT RIDGE II | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
CRESCENT RIDGE II | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
90 CENTRAL STREET
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,642,000
Initial Cost, Buildings and Improvements				29,497,000
Initial Cost, Total				33,139,000
Costs Capitalized Subsequent to Acquisition				2,059,000
Gross Amount at Which Carried, Land				3,642,000
Gross Amount at Which Carried, Buildings and Improvements				31,556,000
Gross Amount at Which Carried, Total	$ 35,198,000			35,198,000
Accumulated Depreciation and Amortization	13,992,000			$ 13,992,000
Real Estate:
Balance at the end of the year	35,198,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 13,992,000
90 CENTRAL STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
90 CENTRAL STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
6031 CONNECTION DRIVE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,157,000
Initial Cost, Buildings and Improvements				43,656,000
Initial Cost, Total				46,813,000
Costs Capitalized Subsequent to Acquisition				5,310,000
Gross Amount at Which Carried, Land				3,157,000
Gross Amount at Which Carried, Buildings and Improvements				48,966,000
Gross Amount at Which Carried, Total	$ 52,123,000			52,123,000
Accumulated Depreciation and Amortization	21,764,000			$ 21,764,000
Real Estate:
Balance at the end of the year	52,123,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 21,764,000
6031 CONNECTION DRIVE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
6031 CONNECTION DRIVE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
6021 CONNECTION DRIVE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,157,000
Initial Cost, Buildings and Improvements				42,662,000
Initial Cost, Total				45,819,000
Costs Capitalized Subsequent to Acquisition				11,194,000
Gross Amount at Which Carried, Land				3,157,000
Gross Amount at Which Carried, Buildings and Improvements				53,856,000
Gross Amount at Which Carried, Total	$ 57,013,000			57,013,000
Accumulated Depreciation and Amortization	23,940,000			$ 23,940,000
Real Estate:
Balance at the end of the year	57,013,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 23,940,000
6021 CONNECTION DRIVE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
6021 CONNECTION DRIVE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
6011 CONNECTION DRIVE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,157,000
Initial Cost, Buildings and Improvements				29,034,000
Initial Cost, Total				32,191,000
Costs Capitalized Subsequent to Acquisition				18,451,000
Gross Amount at Which Carried, Land				3,157,000
Gross Amount at Which Carried, Buildings and Improvements				47,485,000
Gross Amount at Which Carried, Total	$ 50,642,000			50,642,000
Accumulated Depreciation and Amortization	13,932,000			$ 13,932,000
Real Estate:
Balance at the end of the year	50,642,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 13,932,000
6011 CONNECTION DRIVE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
6011 CONNECTION DRIVE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
US BANCORP CENTER
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 11,138,000
Initial Cost, Buildings and Improvements				175,629,000
Initial Cost, Total				186,767,000
Costs Capitalized Subsequent to Acquisition				31,031,000
Gross Amount at Which Carried, Land				11,138,000
Gross Amount at Which Carried, Buildings and Improvements				206,660,000
Gross Amount at Which Carried, Total	$ 217,798,000			217,798,000
Accumulated Depreciation and Amortization	84,479,000			$ 84,479,000
Real Estate:
Balance at the end of the year	217,798,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 84,479,000
US BANCORP CENTER | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
US BANCORP CENTER | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
GLENRIDGE HIGHLANDS TWO
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 6,662,000
Initial Cost, Buildings and Improvements				69,031,000
Initial Cost, Total				75,693,000
Costs Capitalized Subsequent to Acquisition				(16,167,000)
Gross Amount at Which Carried, Land				6,662,000
Gross Amount at Which Carried, Buildings and Improvements				52,864,000
Gross Amount at Which Carried, Total	$ 59,526,000			59,526,000
Accumulated Depreciation and Amortization	25,404,000			$ 25,404,000
Real Estate:
Balance at the end of the year	59,526,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 25,404,000
GLENRIDGE HIGHLANDS TWO | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
GLENRIDGE HIGHLANDS TWO | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
200 BRIDGEWATER CROSSING
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 8,182,000
Initial Cost, Buildings and Improvements				84,160,000
Initial Cost, Total				92,342,000
Costs Capitalized Subsequent to Acquisition				(11,288,000)
Gross Amount at Which Carried, Land				8,328,000
Gross Amount at Which Carried, Buildings and Improvements				72,726,000
Gross Amount at Which Carried, Total	$ 81,054,000			81,054,000
Accumulated Depreciation and Amortization	30,985,000			$ 30,985,000
Real Estate:
Balance at the end of the year	81,054,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 30,985,000
200 BRIDGEWATER CROSSING | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
200 BRIDGEWATER CROSSING | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
400 VIRGINIA AVE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 22,146,000
Initial Cost, Buildings and Improvements				49,740,000
Initial Cost, Total				71,886,000
Costs Capitalized Subsequent to Acquisition				1,579,000
Gross Amount at Which Carried, Land				22,146,000
Gross Amount at Which Carried, Buildings and Improvements				51,319,000
Gross Amount at Which Carried, Total	$ 73,465,000			73,465,000
Accumulated Depreciation and Amortization	20,412,000			$ 20,412,000
Real Estate:
Balance at the end of the year	73,465,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 20,412,000
400 VIRGINIA AVE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
400 VIRGINIA AVE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
4250 NORTH FAIRFAX DRIVE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 13,636,000
Initial Cost, Buildings and Improvements				70,918,000
Initial Cost, Total				84,554,000
Costs Capitalized Subsequent to Acquisition				13,783,000
Gross Amount at Which Carried, Land				13,636,000
Gross Amount at Which Carried, Buildings and Improvements				84,701,000
Gross Amount at Which Carried, Total	$ 98,337,000			98,337,000
Accumulated Depreciation and Amortization	32,525,000			32,525,000
Real Estate:
Balance at the end of the year	98,337,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 32,525,000
4250 NORTH FAIRFAX DRIVE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
4250 NORTH FAIRFAX DRIVE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
1225 EYE STREET
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost, Land				21,959,000
Initial Cost, Buildings and Improvements				47,602,000
Initial Cost, Total				69,561,000
Costs Capitalized Subsequent to Acquisition				9,139,000
Gross Amount at Which Carried, Land				21,959,000
Gross Amount at Which Carried, Buildings and Improvements				56,741,000
Gross Amount at Which Carried, Total	$ 78,700,000			78,700,000
Accumulated Depreciation and Amortization	$ 23,701,000			23,701,000
Piedmont’s % Ownership of Entity	98.10%
Real Estate:
Balance at the end of the year	$ 78,700,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 23,701,000
1225 EYE STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
1225 EYE STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
1201 EYE STREET
Real Estate and Accumulated Depreciation [Line Items]
Initial Cost, Land				31,985,000
Initial Cost, Buildings and Improvements				63,139,000
Initial Cost, Total				95,124,000
Costs Capitalized Subsequent to Acquisition				9,416,000
Gross Amount at Which Carried, Land				31,985,000
Gross Amount at Which Carried, Buildings and Improvements				72,555,000
Gross Amount at Which Carried, Total	$ 104,540,000			104,540,000
Accumulated Depreciation and Amortization	$ 26,779,000			$ 26,779,000
Piedmont’s % Ownership of Entity	98.60%
Real Estate:
Balance at the end of the year	$ 104,540,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 26,779,000
1201 EYE STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
1201 EYE STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
1901 MARKET STREET
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Encumbrances				$ 160,000
Initial Cost, Land				13,584,000
Initial Cost, Buildings and Improvements				166,683,000
Initial Cost, Total				180,267,000
Costs Capitalized Subsequent to Acquisition				53,684,000
Gross Amount at Which Carried, Land				20,829,000
Gross Amount at Which Carried, Buildings and Improvements				213,122,000
Gross Amount at Which Carried, Total	$ 233,951,000			233,951,000
Accumulated Depreciation and Amortization	94,261,000			$ 94,261,000
Real Estate:
Balance at the end of the year	233,951,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 94,261,000
1901 MARKET STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
1901 MARKET STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
60 BROAD STREET
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 32,522,000
Initial Cost, Buildings and Improvements				168,986,000
Initial Cost, Total				201,508,000
Costs Capitalized Subsequent to Acquisition				12,105,000
Gross Amount at Which Carried, Land				60,708,000
Gross Amount at Which Carried, Buildings and Improvements				152,905,000
Gross Amount at Which Carried, Total	$ 213,613,000			213,613,000
Accumulated Depreciation and Amortization	58,955,000			$ 58,955,000
Real Estate:
Balance at the end of the year	213,613,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 58,955,000
60 BROAD STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
60 BROAD STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
1414 MASSACHUSETTS AVENUE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,210,000
Initial Cost, Buildings and Improvements				35,821,000
Initial Cost, Total				40,031,000
Costs Capitalized Subsequent to Acquisition				(8,030,000)
Gross Amount at Which Carried, Land				4,365,000
Gross Amount at Which Carried, Buildings and Improvements				27,636,000
Gross Amount at Which Carried, Total	$ 32,001,000			32,001,000
Accumulated Depreciation and Amortization	11,120,000			$ 11,120,000
Real Estate:
Balance at the end of the year	32,001,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 11,120,000
1414 MASSACHUSETTS AVENUE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
1414 MASSACHUSETTS AVENUE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
ONE BRATTLE SQUARE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 6,974,000
Initial Cost, Buildings and Improvements				64,940,000
Initial Cost, Total				71,914,000
Costs Capitalized Subsequent to Acquisition				(23,111,000)
Gross Amount at Which Carried, Land				7,113,000
Gross Amount at Which Carried, Buildings and Improvements				41,690,000
Gross Amount at Which Carried, Total	$ 48,803,000			48,803,000
Accumulated Depreciation and Amortization	16,976,000			$ 16,976,000
Real Estate:
Balance at the end of the year	48,803,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 16,976,000
ONE BRATTLE SQUARE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
ONE BRATTLE SQUARE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
600 CORPORATE DRIVE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,934,000
Initial Cost, Buildings and Improvements				0
Initial Cost, Total				3,934,000
Costs Capitalized Subsequent to Acquisition				9,281,000
Gross Amount at Which Carried, Land				3,934,000
Gross Amount at Which Carried, Buildings and Improvements				9,281,000
Gross Amount at Which Carried, Total	$ 13,215,000			13,215,000
Accumulated Depreciation and Amortization	8,775,000			$ 8,775,000
Real Estate:
Balance at the end of the year	13,215,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 8,775,000
600 CORPORATE DRIVE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
600 CORPORATE DRIVE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
3100 CLARENDON BOULEVARD
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 11,700,000
Initial Cost, Buildings and Improvements				69,705,000
Initial Cost, Total				81,405,000
Costs Capitalized Subsequent to Acquisition				46,824,000
Gross Amount at Which Carried, Land				11,791,000
Gross Amount at Which Carried, Buildings and Improvements				116,438,000
Gross Amount at Which Carried, Total	$ 128,229,000			128,229,000
Accumulated Depreciation and Amortization	34,112,000			$ 34,112,000
Real Estate:
Balance at the end of the year	128,229,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 34,112,000
3100 CLARENDON BOULEVARD | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
3100 CLARENDON BOULEVARD | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
400 BRIDGEWATER CROSSING
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 10,400,000
Initial Cost, Buildings and Improvements				71,052,000
Initial Cost, Total				81,452,000
Costs Capitalized Subsequent to Acquisition				(14,328,000)
Gross Amount at Which Carried, Land				10,400,000
Gross Amount at Which Carried, Buildings and Improvements				56,724,000
Gross Amount at Which Carried, Total	$ 67,124,000			67,124,000
Accumulated Depreciation and Amortization	19,542,000			$ 19,542,000
Real Estate:
Balance at the end of the year	67,124,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 19,542,000
400 BRIDGEWATER CROSSING | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
400 BRIDGEWATER CROSSING | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
LAS COLINAS CORPORATE CENTER I
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,912,000
Initial Cost, Buildings and Improvements				18,830,000
Initial Cost, Total				22,742,000
Costs Capitalized Subsequent to Acquisition				(3,459,000)
Gross Amount at Which Carried, Land				2,543,000
Gross Amount at Which Carried, Buildings and Improvements				16,740,000
Gross Amount at Which Carried, Total	$ 19,283,000			19,283,000
Accumulated Depreciation and Amortization	6,961,000			$ 6,961,000
Real Estate:
Balance at the end of the year	19,283,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 6,961,000
LAS COLINAS CORPORATE CENTER I | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
LAS COLINAS CORPORATE CENTER I | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
LAS COLINAS CORPORATE CENTER II
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,496,000
Initial Cost, Buildings and Improvements				29,881,000
Initial Cost, Total				34,377,000
Costs Capitalized Subsequent to Acquisition				(3,484,000)
Gross Amount at Which Carried, Land				2,543,000
Gross Amount at Which Carried, Buildings and Improvements				28,350,000
Gross Amount at Which Carried, Total	$ 30,893,000			30,893,000
Accumulated Depreciation and Amortization	11,032,000			$ 11,032,000
Real Estate:
Balance at the end of the year	30,893,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 11,032,000
LAS COLINAS CORPORATE CENTER II | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
LAS COLINAS CORPORATE CENTER II | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
TWO PIERCE PLACE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,370,000
Initial Cost, Buildings and Improvements				70,632,000
Initial Cost, Total				75,002,000
Costs Capitalized Subsequent to Acquisition				13,155,000
Gross Amount at Which Carried, Land				8,156,000
Gross Amount at Which Carried, Buildings and Improvements				80,001,000
Gross Amount at Which Carried, Total	$ 88,157,000			88,157,000
Accumulated Depreciation and Amortization	23,285,000			$ 23,285,000
Real Estate:
Balance at the end of the year	88,157,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 23,285,000
TWO PIERCE PLACE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
TWO PIERCE PLACE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
ONE MERIDIAN CROSSINGS
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 2,919,000
Initial Cost, Buildings and Improvements				24,398,000
Initial Cost, Total				27,317,000
Costs Capitalized Subsequent to Acquisition				460,000
Gross Amount at Which Carried, Land				2,919,000
Gross Amount at Which Carried, Buildings and Improvements				24,858,000
Gross Amount at Which Carried, Total	$ 27,777,000			27,777,000
Accumulated Depreciation and Amortization	6,456,000			$ 6,456,000
Real Estate:
Balance at the end of the year	27,777,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 6,456,000
ONE MERIDIAN CROSSINGS | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
ONE MERIDIAN CROSSINGS | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
TWO MERIDIAN CROSSINGS
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 2,661,000
Initial Cost, Buildings and Improvements				25,742,000
Initial Cost, Total				28,403,000
Costs Capitalized Subsequent to Acquisition				766,000
Gross Amount at Which Carried, Land				2,661,000
Gross Amount at Which Carried, Buildings and Improvements				26,508,000
Gross Amount at Which Carried, Total	$ 29,169,000			29,169,000
Accumulated Depreciation and Amortization	6,964,000			$ 6,964,000
Real Estate:
Balance at the end of the year	29,169,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 6,964,000
TWO MERIDIAN CROSSINGS | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
TWO MERIDIAN CROSSINGS | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
THE MEDICI
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 1,780,000
Initial Cost, Buildings and Improvements				11,510,000
Initial Cost, Total				13,290,000
Costs Capitalized Subsequent to Acquisition				5,473,000
Gross Amount at Which Carried, Land				1,780,000
Gross Amount at Which Carried, Buildings and Improvements				16,983,000
Gross Amount at Which Carried, Total	$ 18,763,000			18,763,000
Accumulated Depreciation and Amortization	5,561,000			$ 5,561,000
Real Estate:
Balance at the end of the year	18,763,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 5,561,000
THE MEDICI | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
THE MEDICI | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
225 PRESIDENTIAL WAY
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,626,000
Initial Cost, Buildings and Improvements				36,916,000
Initial Cost, Total				40,542,000
Costs Capitalized Subsequent to Acquisition				(5,419,000)
Gross Amount at Which Carried, Land				3,612,000
Gross Amount at Which Carried, Buildings and Improvements				31,511,000
Gross Amount at Which Carried, Total	$ 35,123,000			35,123,000
Accumulated Depreciation and Amortization	6,479,000			$ 6,479,000
Real Estate:
Balance at the end of the year	35,123,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 6,479,000
225 PRESIDENTIAL WAY | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
225 PRESIDENTIAL WAY | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
235 PRESIDENTIAL WAY
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,154,000
Initial Cost, Buildings and Improvements				44,048,000
Initial Cost, Total				48,202,000
Costs Capitalized Subsequent to Acquisition				(6,851,000)
Gross Amount at Which Carried, Land				4,138,000
Gross Amount at Which Carried, Buildings and Improvements				37,213,000
Gross Amount at Which Carried, Total	$ 41,351,000			41,351,000
Accumulated Depreciation and Amortization	7,691,000			$ 7,691,000
Real Estate:
Balance at the end of the year	41,351,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 7,691,000
235 PRESIDENTIAL WAY | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
235 PRESIDENTIAL WAY | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
400 TOWNPARK
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 2,570,000
Initial Cost, Buildings and Improvements				20,555,000
Initial Cost, Total				23,125,000
Costs Capitalized Subsequent to Acquisition				5,487,000
Gross Amount at Which Carried, Land				2,570,000
Gross Amount at Which Carried, Buildings and Improvements				26,042,000
Gross Amount at Which Carried, Total	$ 28,612,000			28,612,000
Accumulated Depreciation and Amortization	6,900,000			$ 6,900,000
Real Estate:
Balance at the end of the year	28,612,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 6,900,000
400 TOWNPARK | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
400 TOWNPARK | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
ARLINGTON GATEWAY
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 36,930,000
Initial Cost, Buildings and Improvements				129,070,000
Initial Cost, Total				166,000,000
Costs Capitalized Subsequent to Acquisition				(525,000)
Gross Amount at Which Carried, Land				36,930,000
Gross Amount at Which Carried, Buildings and Improvements				128,545,000
Gross Amount at Which Carried, Total	$ 165,475,000			165,475,000
Accumulated Depreciation and Amortization	23,215,000			$ 23,215,000
Real Estate:
Balance at the end of the year	165,475,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 23,215,000
ARLINGTON GATEWAY | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
ARLINGTON GATEWAY | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
5 & 15 WAYSIDE ROAD
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 7,190,000
Initial Cost, Buildings and Improvements				55,445,000
Initial Cost, Total				62,635,000
Costs Capitalized Subsequent to Acquisition				7,432,000
Gross Amount at Which Carried, Land				7,190,000
Gross Amount at Which Carried, Buildings and Improvements				62,877,000
Gross Amount at Which Carried, Total	$ 70,067,000			70,067,000
Accumulated Depreciation and Amortization	12,914,000			$ 12,914,000
Real Estate:
Balance at the end of the year	70,067,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 12,914,000
5 & 15 WAYSIDE ROAD | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
5 & 15 WAYSIDE ROAD | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
6565 MACARTHUR BOULEVARD
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,820,000
Initial Cost, Buildings and Improvements				37,767,000
Initial Cost, Total				42,587,000
Costs Capitalized Subsequent to Acquisition				209,000
Gross Amount at Which Carried, Land				4,820,000
Gross Amount at Which Carried, Buildings and Improvements				37,976,000
Gross Amount at Which Carried, Total	$ 42,796,000			42,796,000
Accumulated Depreciation and Amortization	7,052,000			$ 7,052,000
Real Estate:
Balance at the end of the year	42,796,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 7,052,000
6565 MACARTHUR BOULEVARD | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
6565 MACARTHUR BOULEVARD | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
ONE LINCOLN PARK
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 6,640,000
Initial Cost, Buildings and Improvements				44,810,000
Initial Cost, Total				51,450,000
Costs Capitalized Subsequent to Acquisition				1,250,000
Gross Amount at Which Carried, Land				6,640,000
Gross Amount at Which Carried, Buildings and Improvements				46,060,000
Gross Amount at Which Carried, Total	$ 52,700,000			52,700,000
Accumulated Depreciation and Amortization	9,352,000			$ 9,352,000
Real Estate:
Balance at the end of the year	52,700,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 9,352,000
ONE LINCOLN PARK | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
ONE LINCOLN PARK | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
161 CORPORATE CENTER
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 2,020,000
Initial Cost, Buildings and Improvements				10,680,000
Initial Cost, Total				12,700,000
Costs Capitalized Subsequent to Acquisition				(239,000)
Gross Amount at Which Carried, Land				2,020,000
Gross Amount at Which Carried, Buildings and Improvements				10,441,000
Gross Amount at Which Carried, Total	$ 12,461,000			12,461,000
Accumulated Depreciation and Amortization	2,894,000			$ 2,894,000
Real Estate:
Balance at the end of the year	12,461,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 2,894,000
161 CORPORATE CENTER | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
161 CORPORATE CENTER | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
5 WALL STREET
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Encumbrances				$ 28,687
Initial Cost, Land				9,560,000
Initial Cost, Buildings and Improvements				50,276,000
Initial Cost, Total				59,836,000
Costs Capitalized Subsequent to Acquisition				(3,722,000)
Gross Amount at Which Carried, Land				9,560,000
Gross Amount at Which Carried, Buildings and Improvements				46,554,000
Gross Amount at Which Carried, Total	$ 56,114,000			56,114,000
Accumulated Depreciation and Amortization	7,357,000			$ 7,357,000
Real Estate:
Balance at the end of the year	56,114,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 7,357,000
5 WALL STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
5 WALL STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
1155 PERIMETER CENTER WEST
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 5,870,000
Initial Cost, Buildings and Improvements				66,849,000
Initial Cost, Total				72,719,000
Costs Capitalized Subsequent to Acquisition				(2,452,000)
Gross Amount at Which Carried, Land				5,870,000
Gross Amount at Which Carried, Buildings and Improvements				64,397,000
Gross Amount at Which Carried, Total	$ 70,267,000			70,267,000
Accumulated Depreciation and Amortization	10,589,000			$ 10,589,000
Real Estate:
Balance at the end of the year	70,267,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 10,589,000
1155 PERIMETER CENTER WEST | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
1155 PERIMETER CENTER WEST | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
500 TOWNPARK
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 2,147,000
Initial Cost, Buildings and Improvements				21,925,000
Initial Cost, Total				24,072,000
Costs Capitalized Subsequent to Acquisition				4,092,000
Gross Amount at Which Carried, Land				2,147,000
Gross Amount at Which Carried, Buildings and Improvements				26,017,000
Gross Amount at Which Carried, Total	$ 28,164,000			28,164,000
Accumulated Depreciation and Amortization	2,582,000			$ 2,582,000
Real Estate:
Balance at the end of the year	28,164,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 2,582,000
500 TOWNPARK | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
500 TOWNPARK | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
PARK PLACE ON TURTLE CREEK
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,470,000
Initial Cost, Buildings and Improvements				38,048,000
Initial Cost, Total				42,518,000
Costs Capitalized Subsequent to Acquisition				3,959,000
Gross Amount at Which Carried, Land				4,470,000
Gross Amount at Which Carried, Buildings and Improvements				42,007,000
Gross Amount at Which Carried, Total	$ 46,477,000			46,477,000
Accumulated Depreciation and Amortization	7,615,000			$ 7,615,000
Real Estate:
Balance at the end of the year	46,477,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 7,615,000
PARK PLACE ON TURTLE CREEK | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
PARK PLACE ON TURTLE CREEK | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
80 CENTRAL STREET
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 1,980,000
Initial Cost, Buildings and Improvements				8,930,000
Initial Cost, Total				10,910,000
Costs Capitalized Subsequent to Acquisition				3,021,000
Gross Amount at Which Carried, Land				1,980,000
Gross Amount at Which Carried, Buildings and Improvements				11,951,000
Gross Amount at Which Carried, Total	$ 13,931,000			13,931,000
Accumulated Depreciation and Amortization	1,250,000			$ 1,250,000
Real Estate:
Balance at the end of the year	13,931,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 1,250,000
80 CENTRAL STREET | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
80 CENTRAL STREET | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
ENCLAVE PLACE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 1,890,000
Initial Cost, Buildings and Improvements				60,094,000
Initial Cost, Total				61,984,000
Costs Capitalized Subsequent to Acquisition				35,631,000
Gross Amount at Which Carried, Land				1,890,000
Gross Amount at Which Carried, Buildings and Improvements				95,725,000
Gross Amount at Which Carried, Total	$ 97,615,000			97,615,000
Accumulated Depreciation and Amortization	7,078,000			$ 7,078,000
Real Estate:
Balance at the end of the year	97,615,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 7,078,000
ENCLAVE PLACE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
ENCLAVE PLACE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
SUNTRUST CENTER
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 11,660,000
Initial Cost, Buildings and Improvements				139,015,000
Initial Cost, Total				150,675,000
Costs Capitalized Subsequent to Acquisition				6,612,000
Gross Amount at Which Carried, Land				11,660,000
Gross Amount at Which Carried, Buildings and Improvements				145,627,000
Gross Amount at Which Carried, Total	$ 157,287,000			157,287,000
Accumulated Depreciation and Amortization	18,244,000			$ 18,244,000
Real Estate:
Balance at the end of the year	157,287,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 18,244,000
SUNTRUST CENTER | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
SUNTRUST CENTER | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
GALLERIA 300
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,000,000
Initial Cost, Buildings and Improvements				73,554,000
Initial Cost, Total				77,554,000
Costs Capitalized Subsequent to Acquisition				5,145,000
Gross Amount at Which Carried, Land				4,000,000
Gross Amount at Which Carried, Buildings and Improvements				78,699,000
Gross Amount at Which Carried, Total	$ 82,699,000			82,699,000
Accumulated Depreciation and Amortization	12,434,000			$ 12,434,000
Real Estate:
Balance at the end of the year	82,699,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 12,434,000
GALLERIA 300 | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
GALLERIA 300 | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
GLENRIDGE HIGHLANDS ONE
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 5,960,000
Initial Cost, Buildings and Improvements				50,013,000
Initial Cost, Total				55,973,000
Costs Capitalized Subsequent to Acquisition				1,515,000
Gross Amount at Which Carried, Land				5,960,000
Gross Amount at Which Carried, Buildings and Improvements				51,528,000
Gross Amount at Which Carried, Total	$ 57,488,000			57,488,000
Accumulated Depreciation and Amortization	7,794,000			$ 7,794,000
Real Estate:
Balance at the end of the year	57,488,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 7,794,000
GLENRIDGE HIGHLANDS ONE | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
GLENRIDGE HIGHLANDS ONE | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
CNL CENTER I
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				99.00%
Initial Cost, Land				$ 6,470,000
Initial Cost, Buildings and Improvements				77,858,000
Initial Cost, Total				84,328,000
Costs Capitalized Subsequent to Acquisition				(2,089,000)
Gross Amount at Which Carried, Land				6,470,000
Gross Amount at Which Carried, Buildings and Improvements				75,769,000
Gross Amount at Which Carried, Total	$ 82,239,000			82,239,000
Accumulated Depreciation and Amortization	9,175,000			$ 9,175,000
Real Estate:
Balance at the end of the year	82,239,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 9,175,000
CNL CENTER I | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
CNL CENTER I | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
CNL CENTER II
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				99.00%
Initial Cost, Land				$ 4,550,000
Initial Cost, Buildings and Improvements				55,609,000
Initial Cost, Total				60,159,000
Costs Capitalized Subsequent to Acquisition				771,000
Gross Amount at Which Carried, Land				4,550,000
Gross Amount at Which Carried, Buildings and Improvements				56,380,000
Gross Amount at Which Carried, Total	$ 60,930,000			60,930,000
Accumulated Depreciation and Amortization	7,582,000			$ 7,582,000
Real Estate:
Balance at the end of the year	60,930,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 7,582,000
CNL CENTER II | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
CNL CENTER II | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
ONE WAYSIDE ROAD
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 6,240,000
Initial Cost, Buildings and Improvements				57,124,000
Initial Cost, Total				63,364,000
Costs Capitalized Subsequent to Acquisition				(4,471,000)
Gross Amount at Which Carried, Land				6,240,000
Gross Amount at Which Carried, Buildings and Improvements				52,653,000
Gross Amount at Which Carried, Total	$ 58,893,000			58,893,000
Accumulated Depreciation and Amortization	4,872,000			$ 4,872,000
Real Estate:
Balance at the end of the year	58,893,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 4,872,000
ONE WAYSIDE ROAD | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
ONE WAYSIDE ROAD | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
GALLERIA 200
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 6,470,000
Initial Cost, Buildings and Improvements				55,825,000
Initial Cost, Total				62,295,000
Costs Capitalized Subsequent to Acquisition				3,757,000
Gross Amount at Which Carried, Land				6,470,000
Gross Amount at Which Carried, Buildings and Improvements				59,582,000
Gross Amount at Which Carried, Total	$ 66,052,000			66,052,000
Accumulated Depreciation and Amortization	6,596,000			$ 6,596,000
Real Estate:
Balance at the end of the year	66,052,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 6,596,000
GALLERIA 200 | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
GALLERIA 200 | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
750 WEST JOHN CARPENTER FREEWAY
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 7,860,000
Initial Cost, Buildings and Improvements				36,303,000
Initial Cost, Total				44,163,000
Costs Capitalized Subsequent to Acquisition				2,034,000
Gross Amount at Which Carried, Land				7,860,000
Gross Amount at Which Carried, Buildings and Improvements				38,337,000
Gross Amount at Which Carried, Total	$ 46,197,000			46,197,000
Accumulated Depreciation and Amortization	6,284,000			$ 6,284,000
Real Estate:
Balance at the end of the year	46,197,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 6,284,000
750 WEST JOHN CARPENTER FREEWAY | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
750 WEST JOHN CARPENTER FREEWAY | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
NORMAN POINTE I
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 4,358,000
Initial Cost, Buildings and Improvements				22,322,000
Initial Cost, Total				26,680,000
Costs Capitalized Subsequent to Acquisition				1,191,000
Gross Amount at Which Carried, Land				4,360,000
Gross Amount at Which Carried, Buildings and Improvements				23,511,000
Gross Amount at Which Carried, Total	$ 27,871,000			27,871,000
Accumulated Depreciation and Amortization	2,064,000			$ 2,064,000
Real Estate:
Balance at the end of the year	27,871,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 2,064,000
NORMAN POINTE I | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
NORMAN POINTE I | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
501 West Church Street
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 2,805,000
Initial Cost, Buildings and Improvements				28,119,000
Initial Cost, Total				30,924,000
Costs Capitalized Subsequent to Acquisition				0
Gross Amount at Which Carried, Land				2,805,000
Gross Amount at Which Carried, Buildings and Improvements				28,119,000
Gross Amount at Which Carried, Total	$ 30,924,000			30,924,000
Accumulated Depreciation and Amortization	2,215,000			$ 2,215,000
Real Estate:
Balance at the end of the year	30,924,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 2,215,000
501 West Church Street | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
501 West Church Street | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
9320 Excelsior Boulevard
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 3,760,000
Initial Cost, Buildings and Improvements				35,289,000
Initial Cost, Total				39,049,000
Costs Capitalized Subsequent to Acquisition				(553,000)
Gross Amount at Which Carried, Land				3,707,000
Gross Amount at Which Carried, Buildings and Improvements				34,789,000
Gross Amount at Which Carried, Total	$ 38,496,000			38,496,000
Accumulated Depreciation and Amortization	2,469,000			$ 2,469,000
Real Estate:
Balance at the end of the year	38,496,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 2,469,000
9320 Excelsior Boulevard | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
9320 Excelsior Boulevard | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
25 Burlington Mall Road
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 10,230,000
Initial Cost, Buildings and Improvements				54,787,000
Initial Cost, Total				65,017,000
Costs Capitalized Subsequent to Acquisition				(1,002,000)
Gross Amount at Which Carried, Land				10,230,000
Gross Amount at Which Carried, Buildings and Improvements				53,785,000
Gross Amount at Which Carried, Total	$ 64,015,000			64,015,000
Accumulated Depreciation and Amortization	5,203,000			$ 5,203,000
Real Estate:
Balance at the end of the year	64,015,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 5,203,000
25 Burlington Mall Road | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
25 Burlington Mall Road | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
PIEDMONT POWER, LLC
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 0
Initial Cost, Buildings and Improvements				79,000
Initial Cost, Total				79,000
Costs Capitalized Subsequent to Acquisition				2,740,000
Gross Amount at Which Carried, Land				0
Gross Amount at Which Carried, Buildings and Improvements				2,819,000
Gross Amount at Which Carried, Total	$ 2,819,000			2,819,000
Accumulated Depreciation and Amortization	960,000			$ 960,000
Real Estate:
Balance at the end of the year	2,819,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 960,000
PIEDMONT POWER, LLC | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
PIEDMONT POWER, LLC | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
UNDEVELOPED LAND PARCELS
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 40,503,000
Initial Cost, Buildings and Improvements				0
Initial Cost, Total				40,503,000
Costs Capitalized Subsequent to Acquisition				(601,000)
Gross Amount at Which Carried, Land				37,614,000
Gross Amount at Which Carried, Buildings and Improvements				2,288,000
Gross Amount at Which Carried, Total	$ 39,902,000			39,902,000
Accumulated Depreciation and Amortization	206,000			$ 206,000
Real Estate:
Balance at the end of the year	39,902,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	206,000
Galleria 100
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 7,285,000
Initial Cost, Buildings and Improvements				72,449,000
Initial Cost, Total				79,734,000
Costs Capitalized Subsequent to Acquisition				946,000
Gross Amount at Which Carried, Land				7,285,000
Gross Amount at Which Carried, Buildings and Improvements				73,395,000
Gross Amount at Which Carried, Total	80,680,000			80,680,000
Accumulated Depreciation and Amortization	3,863,000			$ 3,863,000
Real Estate:
Balance at the end of the year	80,680,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 3,863,000
Galleria 100 | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
Galleria 100 | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
Galleria 400
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 5,687,000
Initial Cost, Buildings and Improvements				92,915,000
Initial Cost, Total				98,602,000
Costs Capitalized Subsequent to Acquisition				203,000
Gross Amount at Which Carried, Land				5,687,000
Gross Amount at Which Carried, Buildings and Improvements				93,118,000
Gross Amount at Which Carried, Total	$ 98,805,000			98,805,000
Accumulated Depreciation and Amortization	1,614,000			$ 1,614,000
Real Estate:
Balance at the end of the year	98,805,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 1,614,000
Galleria 400 | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
Galleria 400 | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years
Galleria 600
Real Estate and Accumulated Depreciation [Line Items]
Ownership Percentage				100.00%
Initial Cost, Land				$ 5,418,000
Initial Cost, Buildings and Improvements				81,003,000
Initial Cost, Total				86,421,000
Costs Capitalized Subsequent to Acquisition				558,000
Gross Amount at Which Carried, Land				5,418,000
Gross Amount at Which Carried, Buildings and Improvements				81,561,000
Gross Amount at Which Carried, Total	$ 86,979,000			86,979,000
Accumulated Depreciation and Amortization	1,915,000			$ 1,915,000
Real Estate:
Balance at the end of the year	86,979,000
Accumulated Depreciation and Amortization:
Balance at the end of the year	$ 1,915,000
Galleria 600 | Minimum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	0 years
Galleria 600 | Maximum
Real Estate and Accumulated Depreciation [Line Items]
Life on which Depreciation and Amortization is Computed	40 years