|
Consolidated Statements of Equity (USD $)
In Thousands, except Share data, unless otherwise specified |
Total
USD ($)
|
Preferred Shares
USD ($)
|
Common Shares
USD ($)
|
Additional Paid-in Capital
USD ($)
|
Cumulative Distributions in Excess of Net Income
USD ($)
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Accumulated Other Comprehensive Income (Loss)
USD ($)
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Noncontrolling Interests
USD ($)
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Corporate Office Properties, L.P.
USD ($)
|
Corporate Office Properties, L.P.
Common Shares
USD ($)
|
Corporate Office Properties, L.P.
Accumulated Other Comprehensive Income (Loss)
USD ($)
|
Corporate Office Properties, L.P.
Noncontrolling Interests
USD ($)
|
Corporate Office Properties, L.P.
Limited Partner
|
Corporate Office Properties, L.P.
Limited Partner
Preferred Shares
USD ($)
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Corporate Office Properties, L.P.
General Partner
|
Corporate Office Properties, L.P.
General Partner
Preferred Shares
USD ($)
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Balance at Dec. 31, 2012 | $ 1,436,499 | $ 333,833 | $ 809 | $ 1,653,672 | $ (617,455) | $ (5,435) | $ 71,075 | $ 1,436,499 | $ 1,089,391 | $ (5,708) | $ 10,183 | $ 8,800 | $ 333,833 | ||
| Balance (in units/ shares) at Dec. 31, 2012 | 80,952,986 | 85,020,528 | |||||||||||||
| Balance (preferred units) at Dec. 31, 2012 | 352,000 | 12,821,667 | |||||||||||||
| Increase (Decrease) in Shareholders' Equity | |||||||||||||||
| Conversion of common units to common shares (248,644 and 48,498 for the three months ended March 31, 2013 and 2014, respectively) | 3 | 3,172 | (3,175) | ||||||||||||
| Shares issued to the public (in dollars) | 117,913 | 45 | 117,868 | (117,913) | 117,913 | ||||||||||
| Shares issued to the public (in units/ shares) | 4,485,000 | ||||||||||||||
| Exercise of share options (in units/shares) | 16,453 | 16,453 | |||||||||||||
| Exercise of share options (in dollars) | 301 | 301 | 301 | 301 | |||||||||||
| Share-based compensation (in units/shares) | 116,315 | ||||||||||||||
| Share-based compensation | 1 | ||||||||||||||
| Share-based compensation | 1,999 | ||||||||||||||
| Share-based compensation | 2,000 | 2,000 | 2,000 | ||||||||||||
| Restricted common units/shares redemptions | (60,960) | (60,960) | |||||||||||||
| Restricted common units/shares redemptions (in dollars) | (1,576) | (1,576) | (1,576) | (1,576) | |||||||||||
| Adjustments to noncontrolling interests resulting from changes in ownership of COPLP | (2,229) | 2,229 | |||||||||||||
| Comprehensive income (loss) | 17,187 | 15,020 | 1,025 | 1,142 | 17,187 | 9,342 | 1,074 | 500 | 165 | 6,106 | |||||
| Dividends/Distributions | (29,699) | (29,699) | (30,914) | (24,643) | (165) | (6,106) | |||||||||
| Distributions to owners of common and preferred units in COPLP | (1,215) | (1,215) | |||||||||||||
| Contributions from noncontrolling interests in other consolidated entities | 85 | 0 | 85 | 85 | 85 | ||||||||||
| Adjustment to arrive at fair value of redeemable noncontrolling interest | (848) | (848) | (848) | (848) | |||||||||||
| Tax loss from share-based compensation | (104) | (104) | (104) | (104) | |||||||||||
| Balance at Mar. 31, 2013 | 1,540,543 | 333,833 | 858 | 1,772,255 | (632,134) | (4,410) | 70,141 | 1,540,543 | 1,191,776 | (4,634) | 10,768 | 8,800 | 333,833 | ||
| Balance (in units/ shares) at Mar. 31, 2013 | 85,758,438 | 89,577,336 | |||||||||||||
| Balance (preferred units) at Mar. 31, 2013 | 352,000 | 12,821,667 | |||||||||||||
| Balance at Dec. 31, 2013 | 1,497,249 | 249,083 | 874 | 1,814,015 | (641,868) | 3,480 | 71,665 | 1,497,249 | 1,226,318 | 3,605 | 9,443 | 8,800 | 249,083 | ||
| Balance (in units/ shares) at Dec. 31, 2013 | 87,394,512 | 91,372,212 | 3,977,700 | 87,394,512 | |||||||||||
| Balance (preferred units) at Dec. 31, 2013 | 352,000 | 352,000 | 9,431,667 | 9,431,667 | |||||||||||
| Increase (Decrease) in Shareholders' Equity | |||||||||||||||
| Conversion of common units to common shares (248,644 and 48,498 for the three months ended March 31, 2013 and 2014, respectively) | 651 | (651) | |||||||||||||
| Exercise of share options (in units/shares) | 26,614 | 26,614 | |||||||||||||
| Exercise of share options (in dollars) | 568 | 568 | 568 | 568 | |||||||||||
| Share-based compensation (in units/shares) | 166,272 | ||||||||||||||
| Share-based compensation | 2 | ||||||||||||||
| Share-based compensation | 1,854 | ||||||||||||||
| Share-based compensation | 1,856 | 1,856 | 1,856 | ||||||||||||
| Restricted common units/shares redemptions | (40,965) | (40,965) | |||||||||||||
| Restricted common units/shares redemptions (in dollars) | (1,092) | (1,092) | (1,092) | (1,092) | |||||||||||
| Adjustments to noncontrolling interests resulting from changes in ownership of COPLP | (69) | 69 | |||||||||||||
| Comprehensive income (loss) | 3,741 | 4,741 | (1,408) | 408 | 3,741 | 279 | (1,472) | 279 | 165 | 4,490 | |||||
| Dividends/Distributions | (28,581) | (28,581) | (29,827) | (25,172) | (165) | (4,490) | |||||||||
| Distributions to owners of common and preferred units in COPLP | (1,246) | (1,246) | |||||||||||||
| Adjustment to arrive at fair value of redeemable noncontrolling interest | 540 | 540 | 540 | 540 | |||||||||||
| Balance at Mar. 31, 2014 | $ 1,473,035 | $ 249,083 | $ 876 | $ 1,816,467 | $ (665,708) | $ 2,072 | $ 70,245 | $ 1,473,035 | $ 1,203,297 | $ 2,133 | $ 9,722 | $ 8,800 | $ 249,083 | ||
| Balance (in units/ shares) at Mar. 31, 2014 | 87,594,931 | 91,524,133 | 3,929,202 | 87,594,931 | |||||||||||
| Balance (preferred units) at Mar. 31, 2014 | 352,000 | 352,000 | 9,431,667 | 9,431,667 |