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Commitments and Contingencies | 12 Months Ended
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Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies | Commitments and Contingencies Class Action Litigation In November 2015, four putative securities class action lawsuits were filed in the United States District Court for the Southern District of Texas against the Company and certain of its officers. The lawsuits claim in part that the Company made false and/or misleading statements, as well as failed to disclose material adverse facts about the Company’s business, operations and prospects. The complaint seeks an award of damages in an unspecified amount on behalf of a putative class consisting of persons who purchased the Company’s common stock between October 23, 2014 and November 9, 2015, inclusive. In January 2016, three derivative lawsuits were filed, two in the District Court of Harris County, Texas and one in the United States District Court for the Southern District of Texas, on behalf of the Company against certain of its officers and its current directors. The lawsuits allege violations of law, breaches of fiduciary duty, and unjust enrichment against the defendants. The Company believes that the class action lawsuits and the derivative lawsuits are without merit, and it intends to vigorously defend against all claims asserted. Discovery has not yet commenced. At this time, the Company is unable to reasonably estimate the outcome of this litigation. In addition, the Company has received notice from the U.S. Securities and Exchange Commission that it has opened an inquiry related to similar issues to those raised in the above-described litigation. Other Litigation The Company is subject to routine litigation and other claims that arise in the normal course of business. Management is not aware of any pending or threatened lawsuits or proceedings that are expected to have a material effect on the Company’s financial position, results of operations, or liquidity. Operating Lease Commitments The Company has operating leases for office space, vehicles, and equipment. Future minimum lease payments under operating leases at December 31, 2015 are as follows (in thousands):
Year ending December 31, |  | Minimum Lease Payments
2016 |  | $ | 3,136 |
2017 |  | 2,746 |
2018 |  | 2,504 |
2019 |  | 2,233 |
2020 |  | 2,024 |
Thereafter |  | 14,469 |
Total |  | $ | 27,112 |
Rent expense under operating leases totaled $2.6 million, $2.2 million, and $1.7 million during the years ended December 31, 2015, 2014, and 2013, respectively. 401(k) Retirement Plan The Company maintains a 401(k) retirement plan for the benefit of eligible employees in the U.S. All employees are eligible to participate in the plan upon employment. On January 1, 2015, the Company implemented a new matching program. The Company matches contributions at 100% of up to 2% of an employee’s compensation and, if greater, the Company matches contributions at 50% from 4% to 8% of an employee’s compensation. During the years ended December 31, 2015, 2014, and 2013, compensation expense included $1.0 million, $0.7 million and $0.6 million, respectively, related to the Company’s 401(k) match. Concentrations and Credit Risk The majority of the Company’s revenue is derived from the oil and gas industry. Customers include major oilfield services companies, major integrated oil and natural gas companies, independent oil and natural gas companies, pressure pumping service companies, and state-owned national oil companies. This concentration of customers in one industry increases credit and business risks. The Company is subject to significant concentrations of credit risk within trade accounts receivable as the Company does not generally require collateral as support for trade receivables. In addition, the majority of the Company’s cash is maintained at a major financial institution and balances often exceed insurable amounts.

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