How many winnings in Fallout New Vegas are required to break the casino bank?

i was just wondering how many chips are required to be one in each of the casinos in Fallout NV to "get thrown out" of the casino or go to the high roller table (specifically the Ultra-Luxe casino). also, do you need to get them all in one sitting or can you leave and come back again and it won't "reset" the amount you have to get? oh, and i'm playing blackjack, if that matters. thanks