Who dropped the ball in Virginia???

In 27 CFR Part 178, Definitions for the Categories of Persons Prohibited From
Receiving Firearms (95R-051P), it states:

These prohibitions apply to any person who--
...4) Has been adjudicated as a mental defective or committed to a
mental institution;

From CNN:

CNN also learned Wednesday that in 2005 Cho was declared mentally ill by a Virginia special justice, who declared he was "an imminent danger" to himself, a court document states.

A temporary detention order from General District Court in the commonwealth of Virginia said Cho "presents an imminent danger to himself as a result of mental illness."

In another part of the form, Cho was described as "mentally ill and in need of hospitalization, and presents an imminent danger to self or others as a result of mental illness, or is so seriously mentally ill as to be substantially unable to care for self, and is incapable of volunteering or unwilling to volunteer for treatment."

Doesn't "detention order" equal committed?

How in hell did the NICS Instant Background Check give this nut a pass? Did some bleeding heart in Virginia not put this tidbit in the database????