Summary of Significant Accounting Policies (Details)	6 Months Ended
	Jun. 30, 2012
Buildings [Member]
Property, Plant and Equipment, Useful Life	40 years
Improvements [Member]
Property, Plant and Equipment, Useful Life	20 years
Furniture, fixtures, and equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
Furniture, fixtures, and equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life	10 years