Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.3.1.900
Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Allowance for doubtful accounts- AR $ 1,525 $ 717
Allowance for deferred rent receivable 1,962 1,418
Accumulated amortization of deferred leasing costs $ 66,364 $ 69,998
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 94,531,512 93,255,284
Common Shares of beneficial interest, shares outstanding 94,531,512 93,255,284
Corporate Office Properties, L.P. [Member]    
Allowance for doubtful accounts- AR $ 1,525 $ 717
Allowance for deferred rent receivable 1,962 1,418
Accumulated amortization of deferred leasing costs $ 66,364 $ 69,998
General Partner [Member] | Corporate Office Properties, L.P. [Member]    
Preferred Units, Outstanding 7,431,667 7,431,667
Common Shares of beneficial interest, shares outstanding 94,531,512 93,255,284
Limited Partner [Member] | Corporate Office Properties, L.P. [Member]    
Preferred Units, Outstanding 352,000 352,000
Common Shares of beneficial interest, shares outstanding 3,677,391 3,837,551