Honestly, how could a company offering Moron Control fail to prosper? It's certainly a service that's in constant demand, or if it's not, it should be.
It appears that CMC is a Houston based company which has been in the construction industry for over sixty years, and still has locations in several other states. I don't know why they are leaving South Carolina, but the current economic situation can't be good for construction anywhere.
(Hat tip to commenter Danny)