Guarantees (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Guarantees [Abstract]
Undrawn standby letters of credit outstanding	$ 624

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

No definition available.

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant