Table:
|  | Amortized Cost | Unrealized Gains | Unrealized Losses | Fair Value |
| --- | --- | --- | --- | --- |
| Current assets: |  |  |  |  |
| Cash | $54,275 | $— | $— | $54,275 |
| Cash equivalents: |  |  |  |  |
| Money market funds | 129,321 | — | — | 129,321 |
| Total cash equivalents | 129,321 | — | — | 129,321 |
| Total cash and cash equivalents | 183,596 | — | — | 183,596 |
| Short-term investments: |  |  |  |  |
| Corporate bonds | 58,115 | — | (82) | 58,033 |
| US treasury securities | 138,826 | — | (100) | 138,726 |
| Commercial paper | 7,973 | — | — | 7,973 |
| Total short-term investments | 204,914 | — | (182) | 204,732 |
| Long-term investments: |  |  |  |  |
| Strategic investments | 1,250 | — | — | 1,250 |
| Total long-term investments | $1,250 | $— | $— | $1,250 |
Paragraphs:
The following is a summary of investments, including those that meet the definition of a cash equivalent, as of December 31, 2018 (in thousands):
As of December 31, 2019, the Company’s investment in corporate bonds and US treasury securities had a weighted-average maturity date of approximately five months. Unrealized gains and losses on investments were not significant individually or in aggregate, and the Company does not believe the unrealized losses represent other-than-temporary impairments as of December 31, 2019.
Question:
As of December 31, 2019, how long was the weighted-average maturity date of the Company's investment in corporate bonds and US treasury securities?
Answer: approximately five months.