Commitments and Contingencies (Details Textual) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 Site	Sep. 30, 2011	Sep. 06, 2012	Dec. 31, 2011	Aug. 21, 2007
Commitments and Contingencies (Textual) [Abstract]
Class B common stock of Visa Inc	15,992,893	15,992,893		15,992,893			15,978,958	15,814,662
Commitments and Contingencies (Additional Textual) [Abstract]
Reserves to satisfy Federal regulatory requirements	$ 27,780,000	$ 27,780,000		$ 27,780,000			$ 20,143,000
Rent expense under operating leases		1,054,000	896,000	3,205,000	2,778,000
Conversion ratio				0.4206
Number of sites leased under non-cancelable operating leases				55
Former employee settlement minimum amount						2,039,500
Former employee settlement maximum amount						2,500,000
Recorded expense and accrued liability in anticipation of approval of this settlement	2,090,000
Common Class A [Member]
Commitments and Contingencies (Textual) [Abstract]
The value of the Class A shares	$ 134.28	$ 134.28		$ 134.28
Value of unredeemed Class A equivalent shares	$ 577,000	$ 577,000		$ 577,000
Common Class B [Member]
Commitments and Contingencies (Textual) [Abstract]
Class B common stock of Visa Inc	10,214	10,214		10,214