<xsd:simpleType name="QuarterEndDateType">
<xsd:annotation>
<xsd:documentation>The end date of a calendar quarter</xsd:documentation>
</xsd:annotation>
<xsd:restriction base="xsd:date">
<xsd:pattern value="[1-9][0-9]{3}\-((03\-31)|(06\-30)|(09\-30)|(12\-31))" />
</xsd:restriction>
</xsd:simpleType>