|TTEC HOLDINGS, INC. filed this Form 10-K on 03/06/2019|
The Credit Facility also contains certain customary information and reporting requirements, and events of default, including without limitation events of default based on payment obligations, material inaccuracies of representations and warranties, covenant defaults, cross defaults to certain other debt, certain ERISA events, changes in control, monetary judgments, and insolvency proceedings. Upon the occurrence of an event of default, the lenders may accelerate the maturity of all amounts outstanding under the Credit Facility.
As of December 31, 2018 and 2017, we had borrowings of $282.0 million and $344.0 million, respectively, under the Credit Facility. During 2018, 2017 and 2016, borrowings accrued interest at an average rate of approximately 3.1%, 2.2%, and 1.5% per annum, respectively, excluding unused commitment fees. Our daily average borrowings during 2018, 2017 and 2016 were $514.7 million, $494.7 million and $375.3 million, respectively. As of December 31, 2018, and 2017, based on the current level of availability based on the covenant calculations, the remaining borrowing capacity was approximately $360.0 million and $350.0 million, respectively.
During 2018, one of our clients represented 10.2% of our total annual revenue. Our five largest clients accounted for 35% of our annual revenue for each of the three years ended December 31, 2018, 2017 and 2016, respectively. We have long-term relationships with our top five clients, ranging from 12 to 22 years, with the majority of these clients having completed multiple contract renewals with us. The relative contribution of any single client to consolidated earnings is not always proportional to the relative revenue contribution on a consolidated basis and varies greatly based upon specific contract terms. In addition, clients may adjust business volumes served by us based on their business requirements. We believe the risk of this concentration is mitigated, in part, by the long-term contracts we have with our largest clients. Although certain client contracts may be terminated for convenience by either party, we believe this risk is mitigated, in part, by the service level disruptions and transition/migration costs that would arise for our clients.
The contracts with our five largest clients expire between 2020 and 2023. Additionally, a particular client may have multiple contracts with different expiration dates. We have historically renewed most of our contracts with our largest clients, but there can be no assurance that future contracts will be renewed or, if renewed, will be on terms as favorable as the existing contracts.
We have made and continue to make significant financial investments in technologies and processes to mitigate cyber risks. We have a number of complex information systems used for a variety of functions ranging from services we deliver to our customers to how we support our operations. We depend on the proper functioning of these information systems. Like any information system, they are susceptible to cyber-attack. Any cyber-attack could impact the availability, reliability, speed, accuracy, or other proper functioning of these systems or result in confidential data being compromised which could have a significant impact on our reputation, results of operations, and financial condition. Our information systems are protected through physical and technological safeguards as well as backup systems considered appropriate by management. We also provide employee awareness training about phishing, malware, social engineering, and other cyber risks. Further, we have formed a cybersecurity specific risk management steering committee that meets periodically to fully coordinate all enterprise level cybersecurity issues. Our Board of Directors and executive leadership team are updated at least quarterly on progress and status of our cybersecurity priorities. We continuously monitor and develop our information technology networks and infrastructure to prevent, detect, address, and mitigate the risk of unauthorized access, distributed denial of service attacks, malware attacks, computer viruses, cyber fraud, and other events intended to disrupt information systems, wrongfully obtain valuable information, or cause other types of malicious events that result in harm to our business. Our investment in cybersecurity is not expected to decrease in the foreseeable future, and despite our on-going efforts to improve our cybersecurity, there can be no assurance that a sophisticated cyber-attack could be detected or thwarted.
Recently Issued Accounting Pronouncements
We discuss the potential impact of recent accounting pronouncements in Part II, Item 8. Financial Statements and Supplementary Data, Note 1 to the Consolidated Financial Statements.