Collateralized Mortgage-Backed Securities [Member]

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Collateralized Mortgage-Backed Securities [Member]en-UShttp://www.xbrl.org/2003/role/labelhttp://www.xbrl.org/2003/role/link
Securities collateralized by mortgage loans.en-UShttp://www.xbrl.org/2003/role/documentationhttp://www.xbrl.org/2003/role/link

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