Show all visible child function

I wrote a function that would show all of the child table element, when the search filtered is return, and resulting in under 3 resulted listing. For some reason, it's going through this section multiple times, and closing the child item.
Also, it does not work at all when there are more than 1 results returning.

I'm pretty certain it's something very simple right now, but I've been trying at it for a whole day, and just hoping someone else can take a look and maybe see my error.

Thanks!

Table Initiation:

var table = $('#Employee_Directory').DataTable( {
        "processing": true,
        "bPaginate": true,
        "serverSide": true,
        "lengthMenu": [ [15, 30, 45, -1], [15, 30, 45, "All"] ],
        "oLanguage": {
                            "sSearch": "Search: "
                      },
        searchHighlight: true,
        "ajax": {
            "url": "../directory/get_employee.php",
            "type": "POST"},
        "columns":
        [
            {
            "className":'Last-Name',
            "data": "LastName"  },
            { "data": "FirstName" },
            {
                "data": "Department",
                "orderable":      false
            },
            {
                "data": "Title",
                "orderable":      true
            }
        ],

        "order": [[0, 'asc']]
        } );

The event listener:

    //Event listener for search box
    $('#Employee_Directory_filter input').on('keyup change', function() {
        //When search input is used, clear the department selection dropbox
        document.getElementById("Department_Selection").value = '""';
        document.getElementById("Department_Selection").selectedIndex = '0';
        $("#Department_Selection").change();
        //alert(this.value);
        table.search(this.value);
        //This section checks to see if the table has been filtered
            var TableInfo = document.getElementById("Employee_Directory_info").innerHTML;
            if ((TableInfo.indexOf("filtered") > -1))
            {
                //alert("table filtered");
                var TableInfoArray = TableInfo.split(" ");
                if (TableInfoArray[5] < 3) //If filtered result is under 3, automatically show child table.
                {
                    //alert("Inside Function");
                    $('#Employee_Directory tr').each(function(index,value) {
                        alert("Inside Each Function");
                        //Check to see if child is shown or not
                        if(!table.row(this.index).child.isShown())
                        {
                            alert("Inside Last IF");
                            var tablerow = this.index;
                            var thisrow = table.row( tablerow );
                            thisrow.child( format(thisrow.data()) ).show();
                        }
                    });
                }
            }
        table.draw();
    });
    // Add event listener for opening and closing details
    $('#Employee_Directory tbody').on('click', 'tr', function () {
        var tr = $(this).closest('tr');
        var row = table.row( tr );

        if ( row.child.isShown() ) {
            // This row is already open - close it
            row.child.hide();
            tr.removeClass('shown');
        }
        else {
            // Open this row
            row.child( format(row.data()) ).show();
            tr.addClass('shown');
        }
    } );