Display Active Directory User's Group Memberships

Hi there,
Just wondering how to properly display an AD User's Group Memberships when I create an array. What was requested, is to find all users in AD that have not logged into the network older than 90 days, do some cleanup (move their personal drive, Exchange mailbox, etc.) and to create a log of their account, and what groups they were in.

So here's what I was able to come up with:

#Create the time parameter, 90 days from last logon date

$90Days = (get-date).adddays(-90)

#Create a variable for the date stamp in the log file

$LogDate = get-date -f yyyyMMddhhmm

#Sets the OU to do the base search for all user accounts

$SearchBase = "OU=Contoso, DC=com"

#Create an empty array for the log file

$LogArray = @()

#Use ForEach to loop through all users with logon date older than date set, 90 days. Does clean up and adds to log array.

ForEach ($DeletedUser in (Get-ADUser -searchbase $SearchBase -filter {(lastlogondate -notlike "*" -OR lastlogondate -le $90days) -AND (passwordlastset -le $90days) -AND (enabled -eq $False) -AND (whencreated -le $90days)} -Properties *) )
{
	#Create new object for logging

        $obj = New-Object PSObject

        $obj | Add-Member -MemberType NoteProperty -Name “Name” -Value $DeletedUser.name

        $obj | Add-Member -MemberType NoteProperty -Name “samAccountName” -Value $DeletedUser.samaccountname

        $obj | Add-Member -MemberType NoteProperty -Name “DistinguishedName” -Value $DeletedUser.DistinguishedName

	[b]$obj | Add-Member -MemberType NoteProperty -Name "Member Of" -Value @{expression={$DeletedUser.memberof -join “;”}}[/b]

	#$obj | Add-Member -MemberType NoteProperty -Name “Home Directory” -Value $DeletedUser.homeDirectory

        $obj | Add-Member -MemberType NoteProperty -Name “Status” -Value ‘Deleted’

        #Adds object to the log array

        $LogArray += $obj
}

#Exports log array to CSV file in the temp directory with a date and time stamp in the file name.

$logArray | Export-Csv “C:\Temp\User_Report_$logDate.csv” -NoTypeInformation

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Everything looks good, however, when it comes to the Member Of column, I get a "System.Collections.Hashtable", rather than all the groups the user was in. I think it's because I'm grabbing the data from a property that's an array, and then putting it in another array?

Just wondering what I'm missing...

Please let me know if you need additional info/details...

Thanks,
Classic