American Idol ratings hit a series low last week, dropping to a 1.4 in the desirable 18-49 demographic. Even when head to head competition with The Voice was no longer a threat (the rival show aired a special results show at 8 pm) the numbers stayed flat this week. Once the highly rated FOX show, Empire left the Wednesday night lineup, the show began to falter. The Wrap notes, however, that Idol is still ahead of the final season of the cancelled X Factor. Heading into this week the two regular editions of “Idol” were averaging a combined 2.9 rating...