Summary of Significant Accounting Policies and Practices Property and equipment (Details)	12 Months Ended
	Dec. 31, 2011
ATMs [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	5
Property, Plant and Equipment, Useful Life, Maximum	7
Computers and software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	3
Property, Plant and Equipment, Useful Life, Maximum	5
POS Terminals [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	2
Property, Plant and Equipment, Useful Life, Maximum	5
Vehicles and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life, Minimum	3
Property, Plant and Equipment, Useful Life, Maximum	10