This excerpt taken from the ABII 10-K filed Mar 12, 2010.
Investments in Unconsolidated Entities
Equity investments in which we have the ability to exercise significant influence over the operating and financial policies of the entities but do not control are accounted for using the equity method. The investments are recorded initially at cost and adjusted quarterly to recognize our proportionate share of the investees net income or loss. As of December 31, 2009, we had five equity method investments with an aggregate carrying value of $22.8 million. At December 31, 2008, we had one equity method investment totaling $10.2 million.