Table:
|  | As of March 31, |  |
| --- | --- | --- |
|  | 2019 | 2018 |
| U.S. build-to-suit facility | $47,001 | $43,925 |
| U.K. build-to-suit facility | — | 31,240 |
| Less: Accumulated depreciation | (5,164) | (753) |
|  | $41,837 | $74,412 |
Paragraphs:
(1) Includes construction costs capitalized related to build-to-suit facilities:
As of March 31, 2019 and 2018, the U.S. build-to-suit facility includes company-funded building improvements of $5.2 million and $4.5 million, respectively. In March 2019, the Company derecognized the U.K. build-to-suit facility upon substantial completion of construction. See Note 12 for further details.
Question:
When did the Company derecognized the U.K. build-to-suit facility upon substantial completion of construction?
Answer: March 2019