Redeemable partnership units on our consolidated balance sheets represent units held by third parties and are comprised of Class A units not held by Vornado and Series D-15 and D-16 cumulative redeemable preferred units. Redeemable partnership units 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 “partners' capital” on our consolidated balance sheets. Below is a table summarizing the activity of redeemable partnership units.

(Amounts in thousands)
Balance at December 31, 2011	$	1,160,677
Net income		19,145
Distributions		(12,236)
Redemption of Class A units, 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

Balance at December 31, 2012	$	944,152
Net income		14,719
Distributions		(8,946)
Redemption of Class A units, at redemption value		(13,404)
Adjustments to carry redeemable Class A units at redemption value		44,998
Other, net		13,563
Balance at March 31, 2013	$	995,082

As of March 31, 2013 and December 31, 2012, the aggregate redemption value of redeemable Class A units, which are those units held by third parties, was $949,082,000 and $898,152,000, respectively.

Redeemable partnership units 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 $55,011,000 as of March 31, 2013 and December 31, 2012, respectively.