Annual report pursuant to Section 13 and 15(d)

Mortgage Notes Payable (Details)

v2.4.0.6
Mortgage Notes Payable (Details) (USD $)
12 Months Ended 12 Months Ended 0 Months Ended 0 Months Ended 0 Months Ended 0 Months Ended 0 Months Ended
Dec. 31, 2012
buildings
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
John Marshall II Member
Dec. 31, 2011
John Marshall II Member
Dec. 31, 2012
Olney Village Center Member
Dec. 31, 2011
Olney Village Center Member
Dec. 31, 2012
Kenmore Apartments [Member]
Dec. 31, 2011
Kenmore Apartments [Member]
Dec. 31, 2012
2445 M Street [Member]
Dec. 31, 2011
2445 M Street [Member]
Dec. 31, 2012
3801 Connecticut, Walker House, Bethesda Hill [Member]
Dec. 31, 2011
3801 Connecticut, Walker House, Bethesda Hill [Member]
Dec. 31, 2012
Ashburn Farm Office 5.56% [Member]
Dec. 31, 2011
Ashburn Farm Office 5.56% [Member]
Dec. 31, 2012
Ashburn Farm Office 5.69% [Member]
Dec. 31, 2011
Ashburn Farm Office 5.69% [Member]
Dec. 31, 2012
Woodholme Medical Center [Member]
Dec. 31, 2011
Woodholme Medical Center [Member]
Dec. 31, 2012
West Gude [Member]
Dec. 31, 2011
West Gude [Member]
Jan. 02, 2013
West Gude [Member]
Subsequent Event [Member]
Oct. 11, 2012
15005 Shady Grove [Member]
Dec. 31, 2012
15005 Shady Grove [Member]
Dec. 31, 2011
15005 Shady Grove [Member]
Dec. 11, 2012
Plumtree Medical Center [Member]
Dec. 31, 2012
Plumtree Medical Center [Member]
Dec. 31, 2011
Plumtree Medical Center [Member]
Nov. 02, 2012
Medical Center Drive 9707 [Member]
Dec. 31, 2012
Medical Center Drive 9707 [Member]
Dec. 31, 2011
Medical Center Drive 9707 [Member]
Aug. 02, 2012
Frederick Crossing [Member]
Dec. 31, 2012
Frederick Crossing [Member]
Dec. 31, 2011
Frederick Crossing [Member]
Nov. 30, 2012
Prosperity Medical Center [Member]
Dec. 31, 2012
Prosperity Medical Center 5.36% [Member]
Dec. 31, 2011
Prosperity Medical Center 5.36% [Member]
Dec. 31, 2012
Prosperity Medical Center 5.34% [Member]
Dec. 31, 2011
Prosperity Medical Center 5.34% [Member]
Mortgage Loans on Real Estate [Line Items]                                                                              
Collateral for mortgage notes payable 1                                                                            
Mortgage note, fair value interest rate       5.79% [1]   4.94% [1]   5.37% [1]   7.25% [1],[2]   5.71% [1],[3]   5.56% [1]   5.69% [1]   5.29% [1]   5.86% [1]       5.73% [1],[4]     5.68% [1],[5]     5.32% [1],[6]     5.95% [1],[7]     5.36% [1],[8]   5.34% [1],[8]  
Mortgage notes payable $ 342,970,000 $ 427,710,000   $ 53,274,000 $ 53,936,000 $ 22,343,000 $ 23,873,000 $ 35,535,000 $ 36,097,000 $ 96,848,000 [2] $ 95,593,000 [2] $ 81,029,000 [3] $ 81,029,000 [3] $ 2,313,000 $ 2,438,000 $ 2,024,000 $ 2,159,000 $ 19,608,000 $ 19,954,000 $ 29,996,000 $ 30,761,000     $ 0 [4] $ 7,974,000 [4]   $ 0 [5] $ 4,419,000 [5]   $ 0 [6] $ 4,780,000 [6]   $ 0 [7] $ 21,700,000 [7]   $ 0 [8] $ 31,169,000 [8] $ 0 [8] $ 11,828,000 [8]
Extension term                       1 year                                                      
Carrying Amount, Mortgaged Properties 510,000,000 670,700,000                                                                          
Principal payments – mortgage notes payable $ 85,667,000 $ 32,331,000 $ 25,985,000                                     $ 30,000,000 $ 7,800,000     $ 4,300,000     $ 4,600,000     $ 21,300,000     $ 42,100,000        
[1] Yield on the assumption/issuance date, including the effects of any premiums, discounts or fair value adjustments on the notes.
[2] Interest only is payable monthly until the maturity date upon which all unpaid principal and interest are payable in full.
[3] Interest only is payable monthly until the maturity date, which can be extended for one year upon which the interest rate is reset on June 1, 2016. At maturity on June 1, 2017, all unpaid principal and interest are payable in full.
[4] On October 11, 2012, we repaid without penalty the remaining $7.8 million of principal on the mortgage note secured by 15005 Shady Grove Road.
[5] On December 11, 2012, we repaid without penalty the remaining $4.3 million of principal on the mortgage note secured by Plumtree Medical Center. Because Plumtree Medical Center was sold during 2012 (see Note 3 to the consolidated financial statements), the mortgage note is included in "Other liabilities related to properties sold or held for sale" on our consolidated balance sheets as of December 31, 2011.
[6] On November 1, 2012, we repaid without penalty the remaining $4.6 million of principal on the mortgage note secured by 9707 Medical Center Drive.
[7] On August 1, 2012, we repaid without penalty the remaining $21.3 million of principal on the mortgage note secured by Frederick Crossing.
[8] On November 30, 2012, we repaid without penalty the remaining $42.1 million of principal on the mortgage notes secured by Prosperity Medical Centers.