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Leases - Schedule of Future Lease Payment Under Operating Leases (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Jan. 02, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Leases [Abstract] |  |  |
Remainder of 2019 | $ 681 |  |
2020 | 930 |  |
2021 | 809 |  |
2022 | 824 |  |
2023 | 843 |  |
Thereafter | 5,304 |  |
Total minimum lease payments | 9,391 |  |
Less: amount representing interest payments | (2,797) |  |
Total operating lease liabilities | 6,594 | $ 6,712 |
Less: current portion, operating lease liabilities | 511 |  |
Operating lease liabilities, net of current portion | $ 6,083 |  |

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