(a)     Applications for Compensation.  Applications for interim or final compensation of professionals shall be accompanied by detailed billing statements itemizing all services provided, the time spent on each service, the charge for the service, the identity and hourly rate of each service provider, all costs for which reimbursement is sought, and all taxes passed on to the debtor or estate.  Applications shall list the total amounts of fees, costs, and taxes previously requested, awarded, or paid.