Documation of San Antonio Inc. has acquired the building that previously housed PCI Educational Publishing on Lockhill Selma Road near Shavano Park and is converting the 46,500-square foot structure into its new corporate headquarters. The company, which provides a number of business solutions and support services, employs roughly 320 people across Texas and 150 in San Antonio. It has experienced significant growth and has literally run out of room in its current headquarters, according to Documation…