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Debt | 9 Months Ended
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Sep. 30, 2019
Debt [Abstract] |
Debt | 10. DEBT On May 22, 2018, the Company terminated the amended term loan agreement (“Amended Term Loan Agreement”) it had with the International Finance Corporation (“IFC”) by prepaying the outstanding principal and accrued interest. T he Company did not incur any termination or prepayment penalties as a result of the termination of the Amended Term Loan Agreement. Interest The table below shows the components of the “Interest income (expense), net” line item of the Company’s condensed consolidated statements of operations and the average effective interest rate, excluding commitment fees, on the Company’s borrowings:
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2019 |  | 2018 |  | 2019 |  | 2018
| (in thousands)
Interest expense related to debt, including commitment fees | $ | — |  | $ | — |  | $ | — |  | $ | (257)
Deferred finance cost amortization |  | — |  |  | — |  |  | — |  |  | (191)
Interest income |  | 193 |  |  | 2 |  |  | 581 |  |  | 33
Other interest expense not related to debt |  | — |  |  | 109 |  |  | — |  |  | 142
Interest income (expense), net | $ | 193 |  | $ | 111 |  | $ | 581 |  | $ | (273)
Average effective interest rate, excluding commitment fees |  | 0.00% | (1) |  | 0.00% |  |  | 0.00% | (1) |  | 7.09%
(1)There were no outstanding borrowings during 2019

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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