The authority shall be a nonprofit corporation, and no part of its net earnings remaining after payment of its expenses shall inure to the benefit of any individual, firm, or corporation except as provided in this section. At any time when the authority has no bonds or outstanding obligations, the board may adopt a resolution, which shall be duly entered upon its minutes, declaring that the authority shall be dissolved. Upon the filing for record of a certified copy of the resolution in the office of the judge of probate of the authorizing county, the authority shall be dissolved and in the event it owned any property at the time of its dissolution, the title to its properties shall pass to, and vest equally in, the principal municipality and the authorizing county, as tenants in common.