Mack-Cali Realty, L.P.'s Partners' Capital (Schedule Of Stock Option Plans) (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($) $ / shares shares
Mack-Cali Realty, L.P.'s Partners' Capital [Abstract]
Shares Under Options - Outstanding, beginning balance | shares	805,000
Shares Under Options - Outstanding, ending balance | shares	805,000
Shares Under Options - Options exercisable | shares	5,000
Shares Under Options - Available for grant | shares	2,722,338
Weighted Average Exercise Price - Outstanding, beginning balance | $ / shares	$ 17.33
Weighted Average Exercise Price - Outstanding, ending balance | $ / shares	$ 17.33
Aggregate Intrinsic Value - Outstanding, ending balance | $	$ 4,963
Outstanding stock option price range, lower range | $ / shares	$ 17.31
Outstanding stock option price range, upper range | $ / shares	$ 21.25