back in circulation
out of circulation - if someone is out of circulation they are no longer taking part in social activities.
I hear she's back in circulation again after her accident.

[TahlilGaran] English Idioms Dictionary ▲

back in circulation
1. to be available to the public again (a library book)
The books were back in circulation after we returned them to the library.

2. to be socially active again (after the breakup of a relationship between two people)
My friend stopped seeing his girlfriend and he is now back in circulation.

[TahlilGaran] English Idioms Dictionary ▲

back in circulation
adv. phr.
1. Socially active once again (said about people); back on the dating circuit after a divorce or a romantic breakup.
Now that Sully is divorced from Jim she is hack in circulation.
2. Once again available to the public (said about types of paper money, rare coins, or other commercially available goods).
In the USA the two-dollar hill was back in circulation for a short time only in the 1950s and 1960s.

[TahlilGaran] English Idioms Dictionary ▲