public static function import($em, $document)
 {
     $result = false;
     if ($document->isCSV()) {
         $url = $document->getPath();
         $file = fopen($url, "r");
         while (($data = fgetcsv($file, 8000, "\t")) !== FALSE) {
             $user = $em->getRepository("RenovateMainBundle:User")->findOneByUsername($data[5]);
             if ($user != NULL) {
                 $payment = new Payment();
                 $payment->setUserid($user->getId());
                 $payment->setUser($user);
                 $payment->setName($data[1]);
                 $payment->setAmount($data[2]);
                 $payment->setPersonalBalance($data[3]);
                 $payment->setBuildingBalance($data[4]);
                 $payment->setCreated(new \DateTime($data[0]));
                 $em->persist($payment);
                 $em->flush();
             }
         }
         $result = true;
     }
     $document->unlink();
     return $result;
 }