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Concentrations | 6 Months Ended
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Mar. 31, 2019
Risks And Uncertainties [Abstract] |
Concentrations |
4. | Concentrations
At March 31, 2019, the Company had capacity purchase agreements with American and United. All of the Company's condensed consolidated revenue for the six months ended March 31, 2019 and 2018 and accounts receivable at March 31, 2019 and September 30, 2018 was derived from these agreements. The terms of both the American and United capacity purchase agreements are not aligned with the lease obligations on the aircraft performing services under such agreements. Amounts billed by the Company under capacity purchase agreements are subject to the Company's interpretation of the applicable capacity purchase agreement and are subject to audit by the Company's major airline partners. Periodically, the Company's major airline partners dispute amounts billed and pay amounts less than the amount billed. Ultimate collection of the remaining amounts not only depends upon the Company prevailing under the applicable audit, but also upon the financial well-being of the major airline partner. As such, the Company periodically reviews amounts past due and records a reserve for amounts estimated to be uncollectible. The allowance for doubtful accounts was $1.4 million and $1.3 million at March 31, 2019 and September 30, 2018, respectively. If the Company's ability to collect these receivables and the financial viability of its partners is materially different than estimated, the Company's estimate of the allowance could be materially impacted. American accounted for approximately 55% and 54% of the Company's total revenue for the three months ended March 31, 2019 and 2018, respectively, and 54% for the six months ended March 31, 2019 and 2018. United accounted for approximately 45% and 46% of the Company's revenue for the three months ended March 31, 2019 and 2018, respectively, and 46% for the six months ended March 31, 2019 and 2018. A termination of either the American or the United capacity purchase agreement would have a material adverse effect on the Company's business prospects, financial condition, results of operations, and cash flows.

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- Definition The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -URI http://asc.fasb.org/topic&trid=2134479 + Details
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