The definition is unambiguous. See Polk v. Mut. Serv. Life Ins. Co., 344 N.W.2d 427, 430 (Minn. App. 1984) (a court will not read ambiguity into an unambiguous document in order to alter or vary its terms). The Deans also argue that the district court erred when it construed the bylaws' definition of "common expenses" in a manner that conflicts with the declaration's definition of "common expenses."