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Trade Accounts and Financing Receivables - Additional Information (Details) - USD ($) $ in Thousands | 1 Months Ended |  |
--- | --- | --- | ---
Apr. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2018
Accounts Notes And Loans Receivable [Line Items] |  |  |
Trade accounts receivable |  | $ 21,314 | $ 15,776
Single Customer |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Trade accounts receivable |  | $ 8,200 |
Single Customer | Subsequent Event |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |
Proceeds from trade accounts receivable | $ 6,200 |  |

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- Definition Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(5)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition The cash inflow associated with the sale of a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585 + Details
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