I am getting exception illegal access to loading collection. What I have noticed is that this is happening since database has value of -5.82335E-22 (scientific notitaion, large number of decimal places) for broker fee mentioned below.

<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="BusinessDataTransfer" namespace="BusinessDataTransfer" >
<class name="CostDetails" table="COST_DTLS">
<id name="CostDetailsUID" column="UIDPRICEDTLS">
<generator class="native" />
</id>
<property name="StartTime" column="STARTTIME" />
<property name="BrokerFee" column="BrokerFee"/>
....

.net class corresponding to above nhibernate file

public class PriceCosts
{
public virtual DateTime StartTime { get; set; }
public virtual Decimal BrokerFee { get; set; }

Is there any way to tackle this issue. I have tried changing mapping as mentioned below, but that was not working.
<property name="BrokerFee" column="BrokerFee" type="Decimal(35,26)"/>