Linking Attached Documents Back To Customers

Hello:

Our A/R department attaches notes to new customers using the document attachment feature.  We only use long text.

I have a query that shows all the long text documents attached to A/R Customers shown below.

It shows the notes the A/R specialist enters for a customer.

However, I need to know the customer number for the note.

How can I link the note to a specific customer number?

Here's the query that produces the data sample shown below:

select fad.pk1_value  -- cust_account_id

      ,fad.seq_num

      ,fad.category_id

      ,fad.document_id

      ,fd.datatype_id