| Line | Roll Up Total Concept | Roll Up Items Concept | Count |
|---|---|---|---|
| 1 | mg:DeferredIncomeTaxExpenseBenefitNet | us-gaap:IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance | 1 |
| 2 | mg:DeferredIncomeTaxExpenseBenefitNet | us-gaap:DeferredIncomeTaxExpenseBenefit | 1 |
(Note that this is a work in progress!)