public function display()
    {
        if (!$this->visible) {
            return;
        }

        parent::display();

        if ($this->display_currency) {
            $locale = SwatI18NLocale::get($this->locale);
            echo SwatString::minimizeEntities(
                ' ' . $locale->getInternationalCurrencySymbol()
            );
        }
    }