Shenandoah Telecommunications Company and its subsidiaries (collectively, the “Company”) provide wireless personal communications service (“PCS”) under the Sprint brands, and telephone service, cable television, unregulated communications equipment sales and services, and internet access under the Shentel brand. In addition, the Company operates an interstate fiber optic network and leases its owned cell site towers to both affiliates and non-affiliated third-party wireless service providers. The Company’s reportable segments include: Wireless, Cable, Wireline and Other. See Note 17, Segment Reporting, in our consolidated financial statements for further information.
During the three months ended June 30, 2019, operating revenue increased approximately $2.4 million, or 1.5%, compared with the three months ended June 30, 2018, driven by growth in the Cable and Wireline segments.
During the three months ended June 30, 2019, operating expenses decreased approximately $0.4 million, or 0.3%, compared with the three months ended June 30, 2018. The decrease was primarily due to a decline in selling, general and administrative expenses in our Wireless and Other segments.
During the three months ended June 30, 2019, interest expense decreased approximately $1.3 million, or 15.0%, compared with the three months ended June 30, 2018. The decrease in interest expense was primarily attributable to the 2018 amendments to the Credit Facility Agreement that reduced the applicable base interest rate by 75 basis points, and scheduled reductions of principal, partially offset by the effect of increases in LIBOR.