Surge Private Equity, a Dallas-based private equity firm, acquired Tower Legal Solutions, a New York-based provider of legal staffing and managed review services. The move adds services to Avalon, a portfolio company of Surge that already provides digital forensics, cybersecurity, eDiscovery and more.

“Managed review is the one major service line Avalon was missing,” Avalon CEO Jon Bates said in a press release.

“Avalon’s eDiscovery and cybersecurity divisions are among some of the company’s fastest-growing divisions, and with the combined services of Tower, particularly their expertise in managed review and legal staffing, we can continue to experience this acceleration of growth and deliver even more critical services to professional service organizations,” Bates said.

The deal will pave the way for growth and new opportunities, Tower founder and CEO Leslie Firtell said in a press release.

“Our decision to team with Avalon and Surge PE enables us to service those clients who prefer end-to-end eDiscovery solutions and also allows us to continue to work with clients who prefer to engage us as a standalone managed review solution,” Firtell said.

Update: The deal closed Aug. 22, and Firtell will remain with the company as president of Tower Legal Solutions. Terms of the transaction were not announced.