openDebtorDialog(debtorId: number) {
    var element = document.getElementById("map");
    var node = document.getElementById("map").parentNode;
    node.removeChild(element);

    if (debtorId) {
      var debtor: Debtor = this.debtorList.find(item => item.id == debtorId);
    }
    else {
      var debtor = new Debtor();
    }
    const dialog = this.matDialog.open(DebtorDialogComponent, {
      width: '600px',
      data: {
        id: debtor.id,
        name: debtor.name,
        lastname: debtor.lastname,
        age: debtor.age,
        debt: debtor.debt,
        isTarget: debtor.isTarget,
        location: debtor.location
      }
    });

    dialog.afterClosed().subscribe(result => {
      node.appendChild(element);
      this.loadDebtors();
    });
  }