2. Significant Events and Transactions (Policies)	3 Months Ended
Mar. 31, 2013
Significant Events And Transactions Policies
Recent Accounting Pronouncements	There have been no recent accounting pronouncements or changes in accounting pronouncements that impacted the three month periods ended March 31, 2013 and 2012, or which are expected to impact future periods, which were not previously disclosed in prior periods.

Disclosure of the adoption of new accounting pronouncements that may impact the entity's financial reporting.

No definition available.

Name:	us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration