get item id in custom walker end_lvl function

Question

I'm building a drop down menu with additional box aside the sub menus with information from custom meta box from the parent menu page. The issue I ran into is I cant get the parent menu item id in the end_lvl function. Is it possible using the $db_fields array to get that?

her's is my custom walker class:

thanks for any help here

    function check_for_submenu($classes, $item) {
    global $wpdb;
    $has_children = $wpdb->get_var("SELECT COUNT(meta_id) FROM wp_postmeta WHERE meta_key='_menu_item_menu_item_parent' AND meta_value='".$item->ID."'");
    if ($has_children > 0)
        array_push($classes,'first-level has-drop-down');
    else
        array_push($classes,'first-level');
    return $classes;
}

add_filter( 'nav_menu_css_class', 'check_for_submenu', 10, 2);


class dropdown_walker extends Walker_Nav_Menu
{
    var $link_counter=0;
     var $db_fields = array( 'parent' => 'menu_item_parent', 'id' => 'db_id' );

    function start_lvl(&$output, $depth) {
        global $link_counter;
        $class = 'drop-down';
        $indent = str_repeat("\t",$depth);
        $output .= "\n$indent<ul class=\"$class\"  >\n";
           $output .=  '<div class="menu_open_right">
                                    <div class="menu_open_head">
                                        <p></p>
                                    </div>';

    }

    function end_lvl(&$output, $depth,  $db_fields) {           

           $output .=  '</div>
                                <div class="menu_open_left">
                                    <div class="menu_open_feat_box">';


                                            $args = array(
                                                'p' => //dont know how to get the parent menu item id,
                                            );
                                            $the_query = new WP_Query($args);
                                            while ( $the_query->have_posts() ) : $the_query->the_post(); 


            $output .=  '                   <span>'.    /* dont know how to get the parent menu item id */.'</span>';
            $output .=  '                   <img src="' . get('home_page_snippet_image'). '" />  '; 
            $output .=                               get('home_page_snippet_desc')  ;
            $output .=  '                           <p><a href="">read more +</a></p>';

                                         endwhile;
            $output .=  '                   <div class="menu_duck"></div>
                                    </div>
                                </div>';
           $output .=  '</ul>';

    }

      function start_el(&$output, $item, $depth, $args)
      {
           global $wp_query;
           global $link_counter;
           $indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';

           $class_names = $value = '';

           $classes = empty( $item->classes ) ? array() : (array) $item->classes;   

           $class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item ) );
           $class_names = ' class="'. esc_attr( $class_names ) . '"';
            if (in_array('first-level has-drop-down',$classes)) $counter++;

           $output .= $indent . '<li ' . $value . $class_names .'>';

           $attributes  = ! empty( $item->attr_title ) ? ' title="'  . esc_attr( $item->attr_title ) .'"' : '';
           $attributes .= ! empty( $item->target )     ? ' target="' . esc_attr( $item->target     ) .'"' : '';
           $attributes .= ! empty( $item->xfn )        ? ' rel="'    . esc_attr( $item->xfn        ) .'"' : '';
           $attributes .= ! empty( $item->url )        ? ' href="'   . esc_attr( $item->url        ) .'"' : '';

            if (strpos($class_names,'first-level has-drop-down')) {
                $link_counter++;
                $attributes .= ' class="link-drop-down" ';
            }



            $item_output = $args->before;
            $item_output .= '<a'. $attributes .'>';
            $item_output .= $args->link_before .apply_filters( 'the_title', $item->title, $item->ID );
            $item_output .= $description.$args->link_after;
            $item_output .= '</a>';
            $item_output .= $args->after;

            $output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );

            }
}