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| Number | 7 | http://www.xbrl.org/2003/role/disclosureRef |
| IssueDate | 2018-01-01 | http://www.xbrl.org/2003/role/disclosureRef |
| Paragraph | 31 | http://www.xbrl.org/2003/role/disclosureRef |
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| URIDate | 2018-03-16 | http://www.xbrl.org/2003/role/disclosureRef |
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| IssueDate | 2018-01-01 | http://www.xbrl.org/2003/role/disclosureRef |
| Paragraph | 35K | http://www.xbrl.org/2003/role/disclosureRef |
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| URIDate | 2018-03-16 | http://www.xbrl.org/2003/role/disclosureRef |