| Name | DocumentTransitionReport |
|---|---|
| Namespace | http://xbrl.sec.gov/dei/2019-01-31 |
| Prefix | dei |
| Data type | xbrli:booleanItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Boolean flag that is true only for a form used as a transition report. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Document Transition Report | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| Publisher | SEC | http://www.xbrl.org/2003/role/presentationRef |
| Name | Forms 10-K, 10-Q, 20-F | http://www.xbrl.org/2003/role/presentationRef |
| Number | 240 | http://www.xbrl.org/2003/role/presentationRef |
| Section | 13 | http://www.xbrl.org/2003/role/presentationRef |
| Subsection | a-1- | http://www.xbrl.org/2003/role/presentationRef |