Landholding is one of the crucial functions of the "suku" (female lineage unit). Because Minangkabau men, like Acehnese men, often migrate to seek experience, wealth, and commercial success, the women's kin group is responsible for maintaining the continuity of the family and the distribution and cultivation of the land. These family groups, however, are typically led by a "penghulu" (headman), elected by groups of lineage leaders. With the agrarian base of the Minangkabau economy in decline, the suku—as a landholding unit—has also been declining somewhat in importance, especially in urban areas. Indeed, the position of penghulu is not always filled after the death of the incumbent, particularly if lineage members are not willing to bear the expense of the ceremony required to install a new penghulu.