Brian,
"LCS" refers to "general communications" Talk Groups for the Lake County Sheriff, to distinguish them from specifically traffic related comms on the Highway Patrol Talk Groups. I've only heard comms on those TGs two or three times in six months (others may report different experience).
"CID" is probably detectives - no guarantee - based on the common LEA and military reference to Criminal Investigation Division/Department. I've never heard a comm on this TG....