Simon Helberg

The Big Bang Theory was Thursday's top-rated show again, but Fox took the night overall thanks to American Idol.

Big Bang improved 12 percent to 13.27 million viewers and a 4.6 in the adults 18-to-49 demographic. It was a great night for CBS as it saw growths for all of its shows.

Idol: Who made the final four?

Fox edged CBS by two-tenths for the demo win with Idol (15 million, 3.9), which was down a tenth, and Touch (6.84 million, 2.1), which climbed 11 percent from last week.

On ABC, Scandal  continued to surged, rising 8 percent from last week to 6.78 million and a 2.1. Missing  (6.28 million, 1.1), on the other hand, dropped to a series low in the demo. Grey's Anatomy (9 million, 3.2) was down 3 percent.

NBC saw improvements for The Office (4.3 million, 2.2) and Parks and Recreation (3.3 million, 1.7), while Community (3.28 million, 1.4) was flat and 30 Rock (3.06 million, 1.4) was down from last week's live episode. Awake (2.14 million, 0.7) slumped to a series low and barely escaped being the night's lowest-rated show, the title of which went to The Secret Circle (1.23 million, 0.6).

8 p.m.
CBS:
The Big Bang Theory 13.27million (4.6); Rules of Engagement 9 million (2.7)
ABC: Missing 6.28 million (1.1)
Fox: American Idol 15 million (3.9)
NBC: Community 3.28 million (1.4); 30 Rock 3.06 million (1.4)
CW: The Vampire Diaries 2.4 million (1.1)

9 p.m.
CBS:
Person of Interest 12.9 million (2.5)
ABC: Grey's Anatomy 9 million (3.2)
Fox: Touch 6.84 million (2.1)
NBC: The Office 4.3 million (2.2); Parks and Recreation 3.3 million (1.7)
CW: The Secret Circle 1.23 million (0.6)

10 p.m.
CBS:
The Mentalist 12.6 million (2.4)
ABC: Scandal 6.78 million (2.1)
NBC: Awake 2.14 million (0.7)