Smith 1999. Op. cit is contrasted with ibid., an abbreviation of the Latin adverb ibidem, meaning in the same place; in that very place which refers the reader to the title of the work in the preceding footnote. The easily confused idem (sometimes abbreviated id.
Just to be safe I would have to say leave it in a room temperature area; away from any windows or heaters that can affect the temperature of the egg; for about 6 or 7 hours at the least.
It makes me want to do deviled eggs! I think I'm going to do it this way from now on. Be sure to read the comments on post meridiem's answer. Here's a perfect hard-boiled egg, brought to room temperature, steamed over rapidly boiling water for 13 minutes and then plunged into ice water.