Complex sentence: That same year, TSR Hobbies moved its offices again, to a former medical supply building with an attached warehouse; in 1982, TSR Hobbies broke the 20 million mark in sales.
Split into simpler sentences: That same year, TSR Hobbies moved its offices again, this time to a former medical supply building with an attached warehouse. In 1982, TSR Hobbies broke the 20 million mark in sales.