Why does my idle animation not loop even though Loop is checked?

Hi, I'm making a door that when it's clicked it opens and when it's clicked again, it closes.

Yes, I know it's not the most ideal way to make a door script, but I already had it rigged up from making an animated film so I decided to just go with that.

I've made 4 animations:

~Idle Priority (looped = true)

• IdleOpen -- the default open position

• IdleClose -- the default closing position

~Action Priority (looped = false)

• Opening -- the animation that changes it from closed to open

• Closing -- the animation that changes it from open to closed

My issue is that the idle animation won't loop and the Action Priority Animations won't play a the same time

Here's the script:

local CD = script.Parent.ClickDetector

local Sound = script.Parent.PrimaryPart.Sound

local openAnimation = script:WaitForChild("Open")
local loadedOpenAnim
local idleopenAnimation = script:WaitForChild("IdleOpen")
local loadedidleOpenAnim

local closeAnimation = script:WaitForChild("Close")
local loadedCloseAnim
local idlecloseAnimation = script:WaitForChild("IdleClose")
local loadedidleCloseAnim

local isOpen = false

local humanoid = script.Parent:FindFirstChild("Humanoid")


CD.MouseClick:Connect(function()

    if isOpen == true then

        isOpen = false  

        if loadedidleOpenAnim then loadedidleOpenAnim:Stop() end  

        loadedidleCloseAnim = humanoid:LoadAnimation(closeAnimation)
        loadedidleCloseAnim:Play()
        loadedCloseAnim = humanoid:LoadAnimation(closeAnimation)
        loadedCloseAnim:Play()
        Sound:Play()


    elseif isOpen == false then

        isOpen = true   

        if loadedidleCloseAnim then loadedidleCloseAnim:Stop() end  

        loadedidleOpenAnim = humanoid:LoadAnimation(openAnimation)
        loadedidleOpenAnim:Play()
        loadedOpenAnim = humanoid:LoadAnimation(openAnimation)
        loadedOpenAnim:Play()
        Sound:Play()

    end

end)

Any tips will be very much appreciated, Thanks