Table:
| Year Ending March 31, | Capital Leases | Facility Leases | Data Centers |
| --- | --- | --- | --- |
| 2020 | $ 918 | $ 10,649 | $ 21,216 |
| 2021 | 1,102 | 15,186 | 17,427 |
| 2022 | 326 | 14,111 | 13,010 |
| 2023 | — | 13,825 | 2,774 |
| 2024 | — | 13,686 | 356 |
| Thereafter | — | 59,502 | — |
| Total minimum lease payments | $ 2,346 | $ 126,959 | $ 54,783 |
| Less: Amount representing interest | (121) |  |  |
| Present value of capital lease obligations | 2,225 |  |  |
| Less: Current portion | (844) |  |  |
| Long-term portion of capital lease obligations | $1,381 |  |  |
Paragraphs:
12. Commitments and Contingencies
The Company leases its facilities under non-cancelable operating leases and build-to-suit leases with various expiration dates through March 2029. Rent expense related to the Company’s office facilities was $5.3 million, $4.8 million and $3.2 million for the years ended March 31, 2019, 2018 and 2017, respectively. The Company has also entered into various capital lease agreements for computer equipment with non-cancelable terms through January 2022 and has non-cancelable commitments related to its data centers.
Future minimum payments for our capital leases, facility operating leases (including Lexington MA – U.S. build-to-suit lease) and data center operating leases as of March 31, 2019 are as follows:
Certain amounts included in the table above relating to data center operating leases for the Company’s servers include usage-based charges in addition to base rent.
Future lease payments in the table above do not include amounts due to the Company for future minimum sublease rental income of $0.6 million under non-cancelable subleases through 2020.
The Company has outstanding letters of credit of $3.9 million and $3.8 million related to certain operating leases as of March 31, 2019 and 2018, respectively.
Question:
How much was the outstanding letters of credit related to certain operating leases as of March 31, 2019?
Answer: $3.9 million