Significant Accounting Policies (Narrative) (Details)	9 Months Ended
	Sep. 30, 2012 wn
Significant Accounting Policies [Line Items]
Typical loan term (in days)	90
Minimum [Member]
Significant Accounting Policies [Line Items]
Typical loan term (in days)	30
Typical additional grace period (in days)	10
Maximum [Member]
Significant Accounting Policies [Line Items]
Typical loan term (in days)	90
Typical additional grace period (in days)	60