RF 3.3.1.GA

I have a scrollableDataTable and need the column widths to auto-size (they are not wide enough by default in some cases). I tried the following:

<rich:scrollableDataTable id="equipmentManagementHistoryTable"
 value="#{equipmentManagementHistoryList}"
 var="history"
 width="750px"
 height="200px"
 rendered="#{equipmentManagementHistoryList.getRowCount() gt 0}">
 <rich:column sortable="false"
 width="auto">
 <f:facet name="header"><h:outputText value="ICOMS Description"/></f:facet>
 <h:outputText value="#{history.icomsItemDescription}"/>
 </rich:column>
 <rich:column sortable="false"
 width="auto">
 <f:facet name="header"><h:outputText value="Equipment Type"/></f:facet>
 <h:outputText value="#{recoveredEquipmentManagement.getEquipmentTypeDescription(history.equipmentType)}"/>
 </rich:column>
 <rich:column sortable="false"
 width="auto">
 <f:facet name="header"><h:outputText value="Letter Description"/></f:facet>
 <h:outputText value="#{history.letterDescription}"/>
 </rich:column>
 <rich:column sortable="false"
 width="auto">
 <f:facet name="header"><h:outputText value="Recovery Type"/></f:facet>
 <h:outputText value="#{recoveredEquipmentManagement.getRecoveryTypeDescription(history.recoveryType)}"/>
 </rich:column>
 <rich:column sortable="false"
 width="auto">
 <f:facet name="header"><h:outputText value="Created By"/></f:facet>
 <h:outputText value="#{history.recoveredEquipmentManagement.applicationUserByUpdatedByUserId.userName}"/>
 </rich:column>
 <rich:column sortable="false"
 width="auto">
 <f:facet name="header"><h:outputText value="Created Date"/></f:facet>
 <h:outputText value="#{history.addedDate}">
 <s:convertDateTime type="both" timeStyle="medium" dateStyle="short"/>
 </h:outputText>
 </rich:column>
 </rich:scrollableDataTable>

An Error Occurred:
For input string: "auto"
+- Stack Trace
java.lang.NumberFormatException: For input string: "auto"
 at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
 at java.lang.Integer.parseInt(Integer.java:447)
 at java.lang.Integer.parseInt(Integer.java:497)