| Report Element Information |
| Run date/time: 7/6/2011 7:30:25 AM |
| Report Element Attributes: |
| Prefix: | pattern |
| Standard label: | Earnings Per Share Components [Line Items] |
| Documentation: | Phasellus eleifend, diam vitae dapibus pulvinar, erat ligula auctor dui, eget congue justo lorem hendrerit tellus. |
| Balance type: | |
| Period type: | For Period (duration) |
| Report element type: | [Line Items] |
| Data type: | Text/String (xbrli:stringItemType) |
| ID: | pattern_EarningsPerShareComponentsLineItems |
| Name: | pattern:EarningsPerShareComponentsLineItems |
| Labels of Report Element |
| Role: | Label | Lang |
| (http://www.xbrl.org/2003/role/documentation) | Phasellus eleifend, diam vitae dapibus pulvinar, erat ligula auctor dui, eget congue justo lorem hendrerit tellus. | en |
| Standard label (http://www.xbrl.org/2003/role/label) | Earnings Per Share Components [Line Items] | en |