64. A method of processing documents, comprising: receiving a plurality of stacks in an input receptacle of a document processing device, each stack including a batch of documents and a separator card associated with the batch of documents; feeding each batch of documents, one document at a time, and the associated separator card from the input receptacle into a transport mechanism of the document processing device; transporting via the transport mechanism the batches of documents, one document at a time, and the associated separator cards past one or more sensors of the document processing device; detecting a separator card being transported past the one or more sensors; pausing the feeding from the input receptacle upon a detection of a separator card; processing each document in a batch of documents preceding a separator card; determining whether the processing of each document in a batch of documents preceding a separator card has been completed; and resuming the feeding from the input receptacle after determining the processing of each document in a batch of documents preceding a separator card has been completed, wherein the processing each document in a batch of documents preceding a separator card comprises: determining whether a particular document meets or fails to meet at least one criterion; directing to at least one first output receptacle each document that fails to meet the at least one criterion; directing to at least one second output receptacle each document that meets the at least one criterion; directing a separator card to the at least one second output receptacle if at least one document in the associated batch of documents meets the at least one criterion; and directing a separator card to at least one third output receptacle if all documents in the associated batch of documents fail to meet the at least one criterion.
64. A method of processing documents, comprising: receiving a plurality of stacks in an input receptacle of a document processing device, each stack including a batch of documents and a separator card associated with the batch of documents; feeding each batch of documents, one document at a time, and the associated separator card from the input receptacle into a transport mechanism of the document processing device; transporting via the transport mechanism the batches of documents, one document at a time, and the associated separator cards past one or more sensors of the document processing device; detecting a separator card being transported past the one or more sensors; pausing the feeding from the input receptacle upon a detection of a separator card; processing each document in a batch of documents preceding a separator card; determining whether the processing of each document in a batch of documents preceding a separator card has been completed; and resuming the feeding from the input receptacle after determining the processing of each document in a batch of documents preceding a separator card has been completed, wherein the processing each document in a batch of documents preceding a separator card comprises: determining whether a particular document meets or fails to meet at least one criterion; directing to at least one first output receptacle each document that fails to meet the at least one criterion; directing to at least one second output receptacle each document that meets the at least one criterion; directing a separator card to the at least one second output receptacle if at least one document in the associated batch of documents meets the at least one criterion; and directing a separator card to at least one third output receptacle if all documents in the associated batch of documents fail to meet the at least one criterion. 70. The method of claim 64 , wherein the at least one criterion comprises a document being a no call bill.