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Leases - Schedule of Future Lease Payment Under Finance Lease (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
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Leases [Abstract] |  |
Remainder of 2019 | $ 565 |
2020 | 9 |
2021 | 9 |
2022 | 9 |
2023 | 10 |
Total minimum lease payments | 602 |
Less: amount representing interest payments | (11) |
Present value of future minimum lease payment | 591 |
Less: unamortized discount | (6) |
Present value of future net minimum lease payments | 585 |
Less: current portion, net of unamortized discount | (553) |
Finance lease obligation, net of current portion | $ 32 |

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- Definition Amount of lessee's undiscounted obligation for lease payments for finance lease, due in fifth fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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