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Leases (Tables) | 3 Months Ended
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Mar. 31, 2019
Leases [Abstract] |
Schedule of Components of Lease Expense | The components of lease expense for the three months ended March 31, 2019 were as follows:
Lease Cost |  | For the three months ended March 31, 2019 |
Fixed operating lease cost |  | $ | 187 |
Short-term lease costs |  |  | 8 |
Total lease expense |  | $ | 195 |
Other information |  |  |  |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |
Operating cash flows from operating leases |  | $ | 201 |
Leased assets obtained in exchange for new operating lease liabilities (1) |  | $ | 781 |
Weighted-average remaining lease term—operating leases |  |  | 3.9 years |
Weighted-average discount rate—operating leases |  |  | 9.0 | %
(1) | Acquired in Merger with Arsanis
Schedule of Maturities of Lease Liabilities | Maturities of lease liabilities due under these lease agreements as of March 31, 2019 are as follows:
Maturity of lease liabilities |  | Operating Leases |
2019 (remainder of 2019) |  | $ | 837 |
2020 |  |  | 1,281 |
2021 |  |  | 1,304 |
2022 |  |  | 970 |
2023 |  |  | 489 |
Thereafter |  |  | — |
Total lease payments |  |  | 4,880 |
Less: interest |  |  | (764 | )
Total operating lease liabilities as of March 31, 2019 |  | $ | 4,116 |
Summary of Future Minimum Lease Payments Due under Operating Leases | The Company adopted ASU 2016-02 on January 1, 2019 as noted above, and as required, the following disclosure is provided for periods prior to adoption. Future annual minimum lease payments due under the Company’s operating leases as of December 31, 2018 were as follows:
Year Ending December 31, |  | Operating Leases |
2019 |  | $ | 810 |
2020 |  |  | 823 |
2021 |  |  | 835 |
2022 |  |  | 492 |
Total |  | $ | 2,960 |

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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
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