Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Equity

v3.8.0.1
Consolidated Statements of Equity - USD ($)
$ in Thousands
Total
Common Shares [Member]
Preferred Shares [Member]
Common Shares [Member]
Additional Paid-in Capital [Member]
Additional Paid-in Capital [Member]
Common Shares [Member]
Cumulative Distributions in Excess of Net Income [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Noncontrolling Interests [Member]
Corporate Office Properties, L.P. [Member]
Corporate Office Properties, L.P. [Member]
Common Shares [Member]
Corporate Office Properties, L.P. [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Corporate Office Properties, L.P. [Member]
Noncontrolling Interests [Member]
Corporate Office Properties, L.P. [Member]
Limited Partner [Member]
Corporate Office Properties, L.P. [Member]
Limited Partner [Member]
Preferred Shares [Member]
Corporate Office Properties, L.P. [Member]
General Partner [Member]
Corporate Office Properties, L.P. [Member]
General Partner [Member]
Preferred Shares [Member]
Balance at Dec. 31, 2014 $ 1,520,884   $ 199,083 $ 933 $ 1,969,968   $ (717,264) $ (1,297) $ 69,461 $ 1,520,884 $ 1,305,219 $ (1,381) $ 9,163   $ 8,800   $ 199,083
Balance (in units/ shares) at Dec. 31, 2014 93,255,284                   97,092,835            
Balance (preferred units) at Dec. 31, 2014                             352,000   7,431,667
Increase (Decrease) in Shareholders' Equity                                  
Conversion of common units to common shares (160,160, 87,000 and 339,513 shares in 2015, 2016 and 2017, respectively) $ 0     2 2,149       (2,151)                
Issuance of common units resulting from common shares issued under at-the-market program (in units)                     890,241            
Issuance of common units resulting from common shares issued under at-the-market program (890,241, 3,721,227 and 591,042 shares in 2015, 2016 and 2017, respectively)   $ 26,535   9   $ 26,526       26,535 $ 26,535            
Exercise of share options (in units/shares) 76,474                   76,474            
Exercise of share options (76,474 and 5,000 shares in 2015 and 2017 respectively) $ 2,008       2,008         2,008 $ 2,008            
Share-based compensation (149,353, 158,912 and 179,180 shares issued, net of redemptions in 2015, 2016 and 2017, respectively) $ 7,398     1 7,397         7,398 $ 7,398            
Share-based compensation (in shares/units) 149,353                   149,353            
Redemption of vested equity awards $ (2,462)       (2,462)         (2,462) $ (2,462)            
Adjustments to noncontrolling interests resulting from changes in ownership of COPLP 0       (682)       682                
Comprehensive income 185,247           178,300 (1,541) 8,488 185,247 170,488 (1,604) 1,493   $ 660   $ 14,210
Dividends/Distributions (118,208)           (118,208)     (122,914) (108,044)       $ (660)   $ (14,210)
Distributions to owners of common and preferred units in COPLP (4,706)               (4,706)                
Contributions from noncontrolling interests in other consolidated entities 300               300 300     300        
Distributions to noncontrolling interests in other consolidated entities (35)               (35) (35)     (35)        
Adjustment to arrive at fair value of redeemable noncontrolling interests 116       116         116 116            
Tax loss from share-based compensation $ (513)       (513)         (513) $ (513)            
Balance (preferred units) at Dec. 31, 2015                             352,000   7,431,667
Balance (in units/ shares) at Dec. 31, 2015 94,531,512                   98,208,903            
Balance at Dec. 31, 2015 $ 1,616,564   $ 199,083 945 2,004,507   (657,172) (2,838) 72,039 1,616,564 $ 1,400,745 (2,985) 10,921   $ 8,800   $ 199,083
Increase (Decrease) in Shareholders' Equity                                  
Redemption of preferred shares/units     (531,667)                           (531,667)
Redemption of preferred shares/units (531,667 and 6,900,000 shares in 2016 and 2017, respectively) (26,583)   $ (26,583)   17   (17)     (26,583)             $ (26,583)
Conversion of common units to common shares (160,160, 87,000 and 339,513 shares in 2015, 2016 and 2017, respectively) 0     1 1,166       (1,167)                
Issuance of common units resulting from common shares issued under at-the-market program (in units)                     3,721,227            
Issuance of common units resulting from common shares issued under at-the-market program (890,241, 3,721,227 and 591,042 shares in 2015, 2016 and 2017, respectively) 109,053     37 109,016         109,053 $ 109,053            
Share-based compensation (149,353, 158,912 and 179,180 shares issued, net of redemptions in 2015, 2016 and 2017, respectively) $ 7,453     2 7,451         7,453 $ 7,453            
Share-based compensation (in shares/units) 158,912                   158,912            
Redemption of vested equity awards $ (2,466)       (2,466)         (2,466) $ (2,466)            
Adjustments to noncontrolling interests resulting from changes in ownership of COPLP 0       (2,158)       2,158                
Comprehensive income 14,543           11,439 1,107 1,997 14,543 (3,017) 1,131 1,472   660   14,297
Dividends/Distributions (119,526)           (119,526)     (124,176) (109,219)       $ (660)   $ (14,297)
Distributions to owners of common and preferred units in COPLP (4,650)               (4,650)                
Contributions from noncontrolling interests in other consolidated entities 1,244       0       1,244 1,244     1,244        
Distributions to noncontrolling interests in other consolidated entities (16)               (16) (16)     (16)        
Adjustment to arrive at fair value of redeemable noncontrolling interests (621)       (621)         (621) (621)            
Tax loss from share-based compensation $ (331)       (331)         (331) $ (331)            
Balance (preferred units) at Dec. 31, 2016                           352,000 352,000 6,900,000 6,900,000
Balance (in units/ shares) at Dec. 31, 2016 98,498,651                   102,089,042     3,590,391   98,498,651  
Balance at Dec. 31, 2016 $ 1,594,664   $ 172,500 985 2,116,581   (765,276) (1,731) 71,605 1,594,664 $ 1,401,597 (1,854) 13,621   $ 8,800   $ 172,500
Increase (Decrease) in Shareholders' Equity                                  
Redemption of preferred shares/units     (6,900,000)                           (6,900,000)
Redemption of preferred shares/units (531,667 and 6,900,000 shares in 2016 and 2017, respectively) (172,500)   $ (172,500)   6,847   (6,847)     (172,500)             $ (172,500)
Conversion of common units to common shares (160,160, 87,000 and 339,513 shares in 2015, 2016 and 2017, respectively) 0     3 4,633       (4,636)                
Common shares issued under forward equity sale agreements (1,678,913 shares) 49,944     17 49,927         49,944 $ (49,944)            
Issuance of common units resulting from COPT forward equity sale agreements (in shares)                     1,678,913            
Issuance of common units resulting from common shares issued under at-the-market program (in units)                     591,042            
Issuance of common units resulting from common shares issued under at-the-market program (890,241, 3,721,227 and 591,042 shares in 2015, 2016 and 2017, respectively) $ 19,668     6 19,662         19,668 $ 19,668            
Exercise of share options (in units/shares) 5,000                   5,000            
Exercise of share options (76,474 and 5,000 shares in 2015 and 2017 respectively) $ 150       150         150 $ 150            
Share-based compensation (149,353, 158,912 and 179,180 shares issued, net of redemptions in 2015, 2016 and 2017, respectively) $ 6,095     2 6,093         6,095 $ 6,095            
Share-based compensation (in shares/units) 179,180                   179,180            
Redemption of vested equity awards $ (1,973)       (1,973)         (1,973) $ (1,973)            
Adjustments to noncontrolling interests resulting from changes in ownership of COPLP 0       (1,486)       1,486                
Comprehensive income 78,022           70,091 3,898 4,033 78,022 65,808 4,027 1,308   660   6,219
Dividends/Distributions (116,158)           (116,158)     (120,480) (113,601)       $ (660)   $ (6,219)
Distributions to owners of common and preferred units in COPLP (4,322)               (4,322)                
Distributions to noncontrolling interests in other consolidated entities (2,617)               (2,617) (2,617)     (2,617)        
Adjustment to arrive at fair value of redeemable noncontrolling interests 626       626         626 626            
Tax loss from share-based compensation $ (13)       (13)         (13) $ (13)            
Balance (preferred units) at Dec. 31, 2017                           352,000 352,000 0 0
Balance (in units/ shares) at Dec. 31, 2017 101,292,299                   104,543,177.000     3,250,878   101,292,299  
Balance at Dec. 31, 2017 $ 1,451,586   $ 0 $ 1,013 $ 2,201,047   $ (818,190) $ 2,167 $ 65,549 $ 1,451,586 $ 1,428,301 $ 2,173 $ 12,312   $ 8,800   $ 0