Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012 Payment
Commitments and Contingencies (Textual) [Abstract]
Outstanding loan commitments and approvals to fund loans	$ 10.1
Outstanding non cash loan commitments	1.4
Prime-based loans	$ 6.9
Employment agreements with executive officer expiration date	Dec. 31, 2014
Severance compensation paid in terms of annual compensation	2.99 times the average of the last three years
Death payments in terms of annual salary paid	2
Disability payments in terms of annual salary paid	1
Lease expiration date of office space in Dallas, Texas	Feb. 01, 2015