DataTables, Child rows

function format(table_id) {
        return  '<hr/>' +
                '<table cellpadding="5" id="detalhes' + table_id + '" class="display" cellspacing="0" border="0" width="50%"   style="padding-left:80px;">' +
                '<thead><tr><th>Cód. Nota:</th><th>Cód. Produto:</th><th>Descrição:</th><th>Quantidade:</th><th>R$ Unid.:</th><th>% IPI:</th><th>R$ IPI:</th><th>% Desc.:</th><th>R$ Desc.:</th><th>Desc. Unit.:</th><th>R$ Total:</th></tr></thead>' +
                '</table>' +
                '<hr/>';

    }

    var iTableCounter = 1;
    var oInnerTable;
    $(document).ready(function() {
        TableHtml = $('#example').html();
        var table = $('#example').DataTable({
            "bProcessing": true,
            //"paging": false,
            //"searching": false,
            //"info": false,
            "rowId": 'NOTA',
            "ajax": {
                "url": 'forms/customer-details/jsonData.php',
                "type": 'POST',
                "data": {
                    "idCustomer": <?php echo $idCustomer; ?>
                }
            },
            "scrollX": true,
            "language": {
                "sUrl": "../plugins/datatables/Portuguese-Brasil.json"
            },
            "aLengthMenu": [[10, 20, 30, 50, -1], [10, 20, 30, 50, "Todos"]],
            "aoColumns": [
                {
                    "class": 'details-control',
                    "orderable": false,
                    "data": null,
                    "defaultContent": ''
                },
                {"mData": "NOTA"},
                {"mData": "NRO_NOTA"},
                {"mData": "EMISSAO",
                    render: function(data, type, row) {
                        var dateSplit = data.split('-');
                        return type === "display" || type === "filter" ?
                                dateSplit[1] + '/' + dateSplit[2] + '/' + dateSplit[0] :
                                data;
                    }
                },
                {"mData": "QUANTIDADE1",
                    render: $.fn.dataTable.render.number()},
                {"mData": "BRUTO",
                    render: $.fn.dataTable.render.number('.', ',', 2, 'R$ ')},
                {"mData": "VALOR_DESCONTO1",
                    render: $.fn.dataTable.render.number('.', ',', 2, 'R$ ')},
                {"mData": "TOTAL1",
                    render: $.fn.dataTable.render.number('.', ',', 2, 'R$ ')},
                {"mData": "VALOR_IPI1",
                    render: $.fn.dataTable.render.number('.', ',', 2, 'R$ ')},
                {"mData": "VALOR_SUBST",
                    render: $.fn.dataTable.render.number('.', ',', 2, 'R$ ')},
                {"mData": "TOTAL_NF",
                    render: $.fn.dataTable.render.number('.', ',', 2, 'R$ ')},
                {"mData": "PRECO_MEDIO",
                    render: $.fn.dataTable.render.number('.', ',', 2, 'R$ ')},
                {"mData": "REPRES_NOME"},
                {"mData": "VENDEDOR_NOME"},
                {"mData": "OP_NOME"},
                {"mData": "FRANQUEADO_NOME"},
                {"mData": "CARTEIRA"},
                {"mData": "TRANSP_NOME"},
                {"mData": "RASTREAMENTO_CORREIO"},
                {"mData": "CONHECIMENTO"},
                {"mData": "VALOR_FRETE",
                    render: $.fn.dataTable.render.number('.', ',', 2, 'R$ ')},
                {"mData": "PERCENTUAL",
                    render: $.fn.dataTable.render.number('.', ',', 2, '% ')},
                {"mData": "DESCRICAO"},
                {"mData": "DATA_OCORRENCIA"}
            ],
            "order": [[1, "desc"]]
        });
        $('#example tbody').on('click', 'td.details-control', function() {
            var tr = $(this).closest('tr');
            var row = table.row(tr);
            if (row.child.isShown()) {
                row.child.hide();
                tr.removeClass('shown');
            } else {
                row.child(format(iTableCounter)).show();
                tr.addClass('shown');
                oInnerTable = $('#detalhes' + iTableCounter).DataTable({
                    "bProcessing": true,
                    "ajax": {
                        "url": 'forms/customer-details/jsonNota.php',
                        "type": 'POST',
                        "data": {
                            "idCustomer": <?php echo $idCustomer; ?>
                        }
                    },
                    "autoWidth": true,
                    //"deferRender": true,
                    "info": false,
                    //"lengthChange": false,
                    //"ordering": false,
                    //"paging": false,
                    //"scrollX": false,
                    //scrollY": false,
                    "searching": false,
                    "language": {
                        "sUrl": "../plugins/datatables/Portuguese-Brasil.json"
                    },
                    "aLengthMenu": [[10, 20, 30, 50, -1], [10, 20, 30, 50, "Todos"]],
                    "aoColumns": [
                        {"mData": "NOTA"},
                        {"mData": "COD_PRODUTO"},
                        {"mData": "DESC_PROD"},
                        {"mData": "QUANTIDADE",
                            render: $.fn.dataTable.render.number()},
                        {"mData": "UNITARIO",
                            render: $.fn.dataTable.render.number('.', ',', 2, 'R$ ')},
                        {"mData": "PCT_IPI",
                            render: $.fn.dataTable.render.number('.', ',', 2, '% ')},
                        {"mData": "VALOR_IPI",
                            render: $.fn.dataTable.render.number('.', ',', 2, 'R$ ')},
                        {"mData": "DESCONTO",
                            render: $.fn.dataTable.render.number('.', ',', 2, '% ')},
                        {"mData": "VALOR_DESCONTO",
                            render: $.fn.dataTable.render.number('.', ',', 2, 'R$ ')},
                        {"mData": "DESC_UNITARIO",
                            render: $.fn.dataTable.render.number('.', ',', 2)},
                        {"mData": "TOTAL",
                            render: $.fn.dataTable.render.number('.', ',', 2, 'R$ ')}
                    ],
                    "order": [[0, "desc"], [1, "asc"]]
                });
                iTableCounter = iTableCounter + 1;
            }
        });
    });