WaveDivision Holdings has completed a $50 million acquisition of Black Rock Cable. Based in Bellingham, WA, Black Rock provides high-capacity fiber connectivity services in northwest Washington state. Wave says the transaction, which closed at the end of 2012, will not impact Black Rock customers or employees. Services will continue without interruption as operations continue to be merged with Wave.Wave provides video, Internet and phone services for nearly 400,000 residential and commercial customers in Washington, Oregon, and California. Wave plans to retain all of Black Rock's 21 employees, while Black Rock customers will continue to receive service under the Black Rock brand. Additionally, Black Rock customers will now have the additional support of Wave's network operations team.