| Report Standard Label | Reported March 18, 2011 [Member] |
| Documentation | |
| Report Element Class | Member |
| Prefix (From Taxonomy) | pattern |
| Balance Type | |
| Period Type | |
| Data Type | String (xbrli:stringItemType, nonnum:domainItemType ) |
| Name | pattern:ReportedMarch182011Member |
| ID | pattern_ReportedMarch182011Member |
| From | Role | Label | Lang |
|---|---|---|---|
| pattern | Standard label | Reported March 18, 2011 [Member] | en |