| Line | Roll Up Total Concept | Roll Up Items Concept | Count |
|---|---|---|---|
| 1 | fcel:USGovernmentAccountsReceivable | us-gaap:GovernmentContractReceivableUnbilledAmounts | 1 |
| 2 | fcel:USGovernmentAccountsReceivable | us-gaap:GovernmentContractReceivable | 1 |
(Note that this is a work in progress!)