Table:
|  | December 31, 2019 | December 31, 2018 |
| --- | --- | --- |
| Payroll | $6,701 | $15,264 |
| Accrued interest | 35,926 | 40,903 |
| Accrued voyage expenses | — | 3,643 |
| Accrued running costs | — | 42,212 |
| Provision for estimated losses on vessels under time charter | — | 1,604 |
| Audit fees and related services | 234 | 292 |
| Accrued taxes | 8,002 | 6,268 |
| Professional fees | 317 | 1,251 |
| Other accrued expenses | — | 12,215 |
| Total accrued expenses | $51,180 | $123,652 |
Paragraphs:
NAVIOS MARITIME HOLDINGS INC. NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS (Expressed in thousands of U.S. dollars — except share data)
NOTE 10: ACCRUED EXPENSES AND OTHER LIABILITIES
Accrued expenses and other liabilities as of December 31, 2019 and 2018 consisted of the following:
Question:
How many years did professional fees exceed $1,000 thousand?