Annual report pursuant to Section 13 and 15(d)

Mack-Cali Realty Corporation Stockholders' Equity (Schedule Of Restricted Stock Awards) (Details)

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Mack-Cali Realty Corporation Stockholders' Equity (Schedule Of Restricted Stock Awards) (Details)
 12 Months Ended
May. 11, 2015
shares
Dec. 31, 2015
item
$ / shares
shares
Dec. 31, 2014
$ / shares
item
shares
Dec. 31, 2013
$ / shares
item
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares, Outstanding, Beginning balance   346,946 153,560 134,328
Shares, Granted   41,337 [1] 376,719 [2],[3],[4] 168,841 [5],[6]
Shares, Vested (84,000) (250,132) (183,214) (149,463)
Shares, Forfeited   (1,931) (119) (146)
Shares, Outstanding, Ending balance   136,220 346,946 153,560
Weighted-Average Grant-Date Fair Value, Outstanding beginning balance | $ / shares   $ 21.09 $ 25.20 $ 31.65
Weighted-Average Grant-Date Fair Value, Granted | $ / shares   17.51 [1] 20.04 [2],[3],[4] 23.99 [5],[6]
Weighted-Average Grant-Date Fair Value, Vested | $ / shares   21.44 22.37 29.63
Weighted-Average Grant-Date Fair Value, Forfeited | $ / shares   20.31 26.36 26.36
Weighted-Average Grant-Date Fair Value, Outstanding ending balance | $ / shares   $ 19.36 $ 21.09 $ 25.20
Number of executive officers that were granted restricted stock awards | item     2 4
Unvested performance shares     42,000 63,933
Number of executive officers who departed | item   2    
Messr Krug And Messr Wagner [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares, Granted     8,211  
Executive Officer [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares, Granted   37,551 87,734 106,933
Number of executive officers that were granted restricted stock awards | item   2    
[1] Included in the 41,337 Restricted Stock Awards granted in 2015 were 37,551 awards granted to the Company's two executive officers, Mitchell E. Rudin and Michael J. DeMarco.
[2] Included in the 376,719 Restricted Stock Awards granted in 2014 were 8,211 awards granted to the Company's two executive officers, Anthony Krug and Gary Wagner.
[3] Includes 126,000 Performance Shares which were legally granted in 2013 for which future performance goals had not yet been set by the Committee. These awards were not considered granted for accounting purposes until these goals are set. These were considered granted in 2014 for accounting purposes in connection with the announcement of the departure of Mitchell E. Hersh in the fourth quarter 2014.
[4] Includes 42,000 Performance Shares which were legally granted in 2013 for which the 2014 performance goals were set by the Committee on March 31, 2014. Also includes 87,734 shares which were additionally considered granted for accounting purposes to two executive officers in connection with their departure effective March 31, 2014, which vested on April 1, 2014.
[5] Included in the 168,841 Restricted Stock Awards granted in 2013 were 106,933 awards granted to the Company's then four executive officers, Mitchell E. Hersh, Barry Lefkowitz, Roger W. Thomas and Anthony Krug.
[6] Includes 63,933 Performance Shares which were legally granted in 2013 for which the 2013 performance goals were not met, which may be earned if subsequent years' performance goals are met.