Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.6.0.2
Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Allowance for doubtful accounts- AR $ 603 $ 1,525
Allowance for deferred rent receivable 373 1,962
Accumulated amortization of deferred leasing costs $ 65,988 $ 66,364
Common Shares of beneficial interest, par value (in dollars per share) $ 0.01 $ 0.01
Common Shares of beneficial interest, shares authorized 125,000,000 125,000,000
Common Shares of beneficial interest, shares issued 98,498,651 94,531,512
Common Shares of beneficial interest, shares outstanding 98,498,651 94,531,512
Corporate Office Properties, L.P. [Member]    
Allowance for doubtful accounts- AR $ 603 $ 1,525
Allowance for deferred rent receivable 373 1,962
Accumulated amortization of deferred leasing costs $ 65,988 $ 66,364
Redeemable preferred units of general partner outstanding, in units 531,667  
General Partner [Member] | Corporate Office Properties, L.P. [Member]    
Preferred Units, Outstanding 6,900,000 7,431,667
Common Shares of beneficial interest, shares outstanding 98,498,651 94,531,512
Limited Partner [Member] | Corporate Office Properties, L.P. [Member]    
Preferred Units, Outstanding 352,000 352,000
Common Shares of beneficial interest, shares outstanding 3,590,391 3,677,391