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<?xml version="1.0" encoding="windows-1252"?> |
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| | <entity> |
| | | <identifier scheme="http://www.sec.gov/CIK"> 0000020520 </identifier> |
| | | </entity> |
| | <period> |
| | | <startDate> 2020-06-11 </startDate> |
| | | <endDate> 2020-06-11 </endDate> |
| | | </period> |
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| <context id="c20200611to20200611_StatementClassOfStockAxis_CommonStockMember"> |
| | <entity> |
| | | <identifier scheme="http://www.sec.gov/CIK"> 0000020520 </identifier> |
| | | <segment> |
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| </segment> |
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| | <period> |
| | | <startDate> 2020-06-11 </startDate> |
| | | <endDate> 2020-06-11 </endDate> |
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| <context id="c20200611to20200611_StatementClassOfStockAxis_PreferredStockMember"> |
| | <entity> |
| | | <identifier scheme="http://www.sec.gov/CIK"> 0000020520 </identifier> |
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| </segment> |
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| | <period> |
| | | <startDate> 2020-06-11 </startDate> |
| | | <endDate> 2020-06-11 </endDate> |
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