|TRIVAGO N.V. filed this Form 20-F on 03/06/2018|
would recognize foreign exchange losses of €1.6 million based on the net asset or liability balances of our foreign denominated cash, accounts receivable, and accounts payable balances as of December 31, 2017. As the net composition of these balances fluctuate frequently, even daily, as do foreign exchange rates, the example loss could be compounded or reduced significantly within a given period.
During the years ended December 31, 2015, 2016 and 2017, we recorded net foreign exchange rate gains (losses) of €(1.0) million, €0.0 million and €0.1 million, respectively.
Concentration of credit risk
Our business is subject to certain risks and concentrations including dependence on relationships with our advertisers, dependence on third-party technology providers, and exposure to risks associated with online commerce security. Our concentration of credit risk relates to depositors holding our cash and customers with significant accounts receivable balances.
Our customer base includes primarily OTAs, hotel chains and independent hotels. We perform ongoing credit evaluations of our customers and maintain allowances for potential credit losses. We generally do not require collateral or other security from our customers. Expedia and affiliates represented 39%, 36% and 36% of our revenue for the years ended December 31, 2015, 2016 and 2017, respectively, and 55%, 31% and 47% of total accounts receivable as of December 31, 2015, 2016 and 2017, respectively. Booking Holdings and its affiliates represented 27%, 43% and 44% of our revenue for the years ended December 31, 2015, 2016 and 2017, respectively, and 21%, 48% and 28% of total accounts receivable as of December 31, 2015, 2016 and 2017, respectively.
Critical Accounting Policies and Estimates
Our Operating and Financial Review is based on our consolidated financial statements and accompanying notes, which we have prepared in accordance with U.S. GAAP. The preparation of the consolidated financial statements and accompanying notes requires that we make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of our consolidated financial statements. These estimates and assumptions also affect the reported amount of net income or loss during any period. Our actual financial results could differ significantly from these estimates. The significant estimates underlying our consolidated financial statements include revenue recognition; recoverability of current and long-lived assets, intangible assets and goodwill; income; loss contingencies; redeemable non-controlling interests; acquisition purchase price allocations; and share-based compensation. There have been no material adjustments to prior period estimates for any of the periods included in this annual report.
There are certain critical estimates that we believe require significant judgment in the preparation of our consolidated financial statements. We consider an accounting estimate to be critical if:
See Note 2—Significant accounting policies, in the notes to our consolidated financial statements appearing elsewhere in this annual report for a description of all of our significant accounting policies. We believe that the following accounting policies are the most critical to aid you in fully understanding and evaluating our financial condition and results of operations.
We recognize revenue from services rendered when it is earned and realizable based on the following criteria: persuasive evidence of an arrangement exists, services have been rendered, the price is fixed or determinable, and collectability is reasonably assured.