Apart from the bulkiness of the cash you could just put it in your bag and take it with you?
Read the string Jimbo!
The amount is in excess of the legal amount to be taken out of Indonesia!

Then again, another huge potential problem...the arrival in the US with over 10K in currency...or as another poster put it...bells and whistles of money laundering! Then (and I can go on)...find a bank in the US which will even get to within 90% of the exchange rate to be found here for the IDR! The LAST thing this guy wants to do is bring that cash back to the US...especially in IDR. If he wants to take it home, (in cash), convert it here and take the hit. That point has already been made...more than twice!
Just a hint Jimbo, but you might find it less embarrassing to at least read the responses that have already been made before posting your own. The first response, from "O" was "spot on" and covered "all the bases" very well.
Mimpi, I expect your old rupiah currency accounts are waning, like mine? In other words, you've had them for several years (without being specific as to how long)? It is not easy, in fact, very difficult these days for a foreigner to open a new account in their name in a recognized bank.
I've heard it's not "impossible" so if you have current details...bank names, and even better, names of bank officers, the time is now to say who they are.