looping last animation after transition

I have a looping idle animation and a non-looping stand-up animation. In the Animator, I have a stand-up state that transitions into idle state.

I want the stand-up state to loop in idle after the stand-up transition, but instead the whole stand-up-then-idle combination loops. How can I confine the looping to the idle after the transition?

Implementation:

The transition from Any State to stand-up-to-idle state is conditioned on a parameter value that is set in only one place, by a keypress, and it does NOT allow "transition to self".