1. A document processing device, comprising: a transport mechanism for conveying documents including currency bills along a transport path at a rate of at least 800 documents per minute; an imaging sensor adjacent the transport path and operable to capture images of documents conveyed by the transport mechanism; a denomination device adjacent the transport path and operable to denominate a value of each currency bill conveyed by the transport mechanism; and a processor operable to control actuation of the transport mechanism and calculation of an accumulated value of denominated currency bills.