Fair Value Measurements (Details Textual) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2011
Fair Value Measurements (Textual) [Abstract]
Impaired loans recognized	$ 203,000	$ 2,000,000
Amortized cost of Level 3 securities	65,020,000	65,020,000	18,179,000
Unrealized loss	960,000	960,000	284,000
Transfers between level 1 and 2	0	0
Liabilities measured at fair value on a recurring or nonrecurring basis	$ 0	$ 0

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This element represents the fair value of liabilities categorized as other which are not in and of themselves material enough to require separate disclosure.

No definition available.

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