Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2012	Dec. 31, 2011
Contract Amount [Abstract]
Loan Commitments	$ 49,368	$ 39,966
Letters of Credit	$ 1,360	$ 1,327
Expiration period of letter of credit issued (in years)	1 year

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