Are the Detroit Lions trying to trade for a safety?

The easy answer to this question headline is yes.

Coach Jim Schwartz has repeatedly said the Lions, like most NFL teams, will leave no stone unturned as they try to keep improving the team.

Lions general manager Martin Mayhew made good on Schwartz’s stance Tuesday by trading for Jaguars wide receiver Mike Thomas, even though the Lions seemed set with receivers Calvin Johnson, Titus Young, rookie Ryan Broyles and Brian Robiskie, whom they signed last week for depth after Nate Burleson broke his leg.

And the Lions may not be done dealing before Thursday’s trade deadline. Due to concern over safety Louis Delmas’ knee, which took him out of Sunday’s game in the third quarter, the Lions are shopping for a safety with starting experience, according to a report by Jason La Canfora of CBS Sports.

Schwartz said Monday Delmas was day-to-day, but didn’t speak to his availability for Sunday’s game in Jacksonville.

Regardless of Delmas’ health, the Lions were likely already in the market for a safety because they don’t know when Amari Spievey (concussion) will return.

Erik Coleman and Ricardo Silva have been adequate in their time as starting safeties this season, but if the Lions can find someone better to replace Delmas or Spievey, they will.

But at what price? Starting safeties aren’t a cheap commodity, so while the Lions are looking for help, it’s unlikely they can afford to give up the players or draft picks need for someone better than Silva or Coleman.