It's not idle. Follow every step of the following instructions precisely. Do not skip any steps.
Launch Activity Monitor
Change "My Processes" at the top to "All Processes"
Click on the "% CPU" column heading once or twice, so the arrow points downward (highest values on top). (If that column isn't visible, right-click on the column headings and check it, NOT "CPU Time")
Click on the System Memory tab at the bottom.
Take a screen shot of the entire Activity Monitor window, then scroll down to see the rest of the list, take another screen shot
Ya that does seem a bit on the high end. My idle is around 40-43 Celsius with fans at 2k. SMC reset might be necessary if you can't find the source of the drain.