Stock Based Compensation (Details Textual) (USD $)	Dec. 31, 2012
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options	$ 144,000

Aggregate unrecognized cost of option awards made to employees under a stock option plan or plans, that have yet to vest.

No definition available.

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant