Note that the acquisition method views a multiple-step acquisition as essentially the same as a single-step acquisition. In the Arch Company and Zion Company example, once control is evident, the only relevant values in consolidating the accounts of Zion are fair values at January 1, 2015. A new basis of accountability arises for Zion Company on that single date because obtaining control of another firm is considered a significant re measurement event. Previously owned non controlling blocks of stock are consequently revalued to fair value on the date control is obtained.