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Commitments and Contingencies | 12 Months Ended
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Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies | Commitments and Contingencies Commitments We are committed under various noncancelable operating lease agreements primarily related to facilities and equipment that expire at various dates throughout the next several years. Future minimum lease commitments under noncancelable operating leases with initial or remaining terms of one year or more at December 31, 2018, are as follows (in thousands):
Year Ending December 31, | Amount
2019 | $ | 10,544 |
2020 | 9,120 |
2021 | 7,370 |
2022 | 6,006 |
2023 | 4,251 |
Thereafter | 13,103 |
Total future lease commitments | $ | 50,394 |
Total rent expense incurred under operating leases was $16.8 million, $18.7 million, and $19.1 million for the years ended December 31, 2018, 2017 and 2016, respectively. We also have purchase commitments related to inventory in the amount of $42.2 million. We enter into purchase commitments as needed. Contingencies We are the subject of lawsuits and claims arising in the ordinary course of business from time to time. A liability is accrued when a loss is both probable and can be reasonably estimated. We had no material accruals for loss contingencies, individually or in the aggregate, as of December 31, 2018 and December 31, 2017. We believe the probability is remote that the ultimate outcome of these matters would have a material adverse effect on our financial position, results of operations or cash flows. We are conducting an internal investigation of the operations of certain of our foreign subsidiaries in West Africa including possible violations of the U.S. Foreign Corrupt Practices Act (“FCPA”), our policies and other applicable laws. In June 2016, we voluntarily disclosed the existence of our extensive internal review to the SEC, the U.S. Department of Justice (“DOJ”) and other governmental entities. It is our intent to continue to fully cooperate with these agencies and any other applicable authorities in connection with any further investigation that may be conducted in connection with this matter. While our review has not indicated that there has been any material impact on our previously filed financial statements, we have continued to collect information and cooperate with the authorities, but at this time are unable to predict the ultimate resolution of these matters with these agencies. In addition, during the course of the investigation, we discovered historical business transactions (and bids to enter into business transactions) in certain countries that may have been subject to U.S. and other international sanctions. We disclosed this information to the U.S. Department of Commerce’s Bureau of Industry and Security, Office of Export Enforcement (“OEE”) and to the U.S. Department of the Treasury’s Office of Foreign Assets Control (“OFAC”) (as well as to the agencies involved in our ongoing investigation discussed above). We received a No Action Letter dated April 20, 2018 from OEE, stating that OEE had closed its investigation without taking further action. In addition, we received a No Action Letter dated April 23, 2018 from OFAC, stating that OFAC had closed its investigation without taking further action. As disclosed above, our investigation into possible violations of the FCPA remains ongoing, and we will continue to cooperate with the SEC, DOJ and other relevant governmental entities in connection therewith. At this time, we are unable to predict the ultimate resolution of these matters with these agencies, including any financial impact to us. Our board and management are committed to continuously enhancing our internal controls that support improved compliance and transparency throughout our global operations.

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