Redeemable noncontrolling interests on our consolidated balance sheets are comprised primarily of Class A Operating Partnership units that are held by third parties and 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, 2013	$	1,003,620
Net income		8,564
Other comprehensive income		1,260
Distributions		(16,824)
Redemption of Class A units for common shares, at redemption value		(19,771)
Adjustments to carry redeemable Class A units at redemption value		227,338
Other, net		16,771
Balance at June 30, 2014	$	1,220,958

Balance at December 31, 2014	$	1,337,780
Net income		15,485
Other comprehensive loss		(2,635)
Distributions		(14,734)
Redemption of Class A units for common shares, at redemption value		(43,278)
Adjustments to carry redeemable Class A units at redemption value		(229,521)
Issuance of Series D-17 Preferred Units		4,427
Other, net		25,370
Balance at June 30, 2015	$	1,092,894

As of June 30, 2015 and December 31, 2014, the aggregate redemption value of redeemable Class A units was $1,087,466,000 and $1,336,780,000, 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 as of June 30, 2015 and December 31, 2014. Changes in the value from period to period, if any, are charged to “interest and debt expense” on our consolidated statements of income.