The following table shows the different types of expenses allocated to general and administrative costs for the years ended December 31:
| 2015 | 2016 | 2017 | ||||||||||
| Personnel expenses | 3,658 | 4,729 | 4,521 | |||||||||
| Legal, consulting and audit fees | 2,468 | 2,210 | 1,945 | |||||||||
| Operating lease expenses | 89 | 111 | 126 | |||||||||
| Other expenses | 1,333 | 1,273 | 1,394 | |||||||||
| 7,548 | 8,323 | 7,986 | ||||||||||