Redeemable noncontrolling interests on our consolidated balance sheets represent Operating Partnership units held by third parties and are comprised of Class A units and Series D-10, D-14, D-15 and D-16 (collectively, “Series D”) cumulative redeemable preferred units. Redeemable noncontrolling interests on our consolidated balance sheets are recorded at the greater of their carrying amount or redemption value at the end of each reporting period. Changes in the value from period to period are charged to “additional capital” in our consolidated statements of changes in equity. Below is a table summarizing the activity of redeemable noncontrolling interests.

(Amounts in thousands)
Balance at December 31, 2010	$	1,327,974
Net income		31,808
Distributions		(12,702)
Conversion of Class A units into common shares, at redemption value		(27,539)
Adjustments to carry redeemable Class A units at redemption value		42,227
Other, net		4,752
Balance at March 31, 2011	$	1,366,520


Balance at December 31, 2011	$	1,160,677
Net income		19,145
Distributions		(12,236)
Conversion of Class A units into common shares, at redemption value		(13,028)
Adjustments to carry redeemable Class A units at redemption value		96,061
Other, net		280
Balance at March 31, 2012	$	1,250,899

As of March 31, 2012 and December 31, 2011, the aggregate redemption value of redeemable Class A units was $1,024,899,000 and $934,677,000, respectively.

Redeemable noncontrolling interests exclude our Series G-1 through G-4 convertible preferred units and Series D-13 cumulative redeemable preferred units, as they are accounted for as liabilities in accordance with ASC 480, Distinguishing Liabilities and Equity, because of their possible settlement by issuing a variable number of Vornado common shares. Accordingly the fair value of these units is included as a component of “other liabilities” on our consolidated balance sheets and aggregated $55,097,000 and $54,865,000 as of March 31, 2012 and December 31, 2011, respectively.