All hospital boards, including boards of trustees of joint county-city hospital authorities, so appointed are authorized, subject to such special regulations as may be from time to time imposed by the county commissioners and/or city council appointing said board, or, in the case of joint county-city hospital authorities, as may be provided in the agreement creating such authority:
Said hospital board shall allow and pay all expenses for the management, maintenance and operation of said hospital and the expenses of said board from such funds or any other funds in said board's control, without allowance by either the board of county commissioners or the city council, but no funds in the custody of said hospital board or its treasurer shall be paid out except on order of such hospital board, and said board shall not, without special authorization of the board of county commissioners, create any debt or debts chargeable against the county, nor without special authorization of the city council create any debt or debts chargeable against the city, exceeding in the aggregate the total of the cash in the custody of the hospital board and the appropriations previously made by the city and/or county, available for the payment thereof.
Idaho Code § 31-3706