in € thousand | 31.12.2010 | 31.12.2009 |
---|---|---|
Trade receivables | 4,534 | 3,521 |
Allowances for doubtful accounts | -1,053 | -964 |
3,481 | 2,557 |
Receivables result primarily from rental invoices and services in relation to investments for which charges are passed on. These were predominantly paid at the time the consolidated financial statements were prepared. Guarantees, cash security deposits and letters of comfort serve as collateral.