Summary Of Significant Accounting Policies (Accumulated Amortization Of Other Intangibles) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Client relationships	$ 11,459	$ 11,459
Software development costs	21,368	19,139
Other	1,501	1,450
Total other intangibles	34,328	32,048
Total accumulated amortization	(15,245)	(11,947)
Total other intangibles - net	19,083	20,101
Client Relationships Accumulated Amortization [Member]
Finite-Lived Intangible Assets [Line Items]
Total accumulated amortization	(3,225)	(2,156)
Software Development Costs Accumulated Amortization [Member]
Finite-Lived Intangible Assets [Line Items]
Total accumulated amortization	(11,110)	(8,985)
Other Accumulated Amortization [Member]
Finite-Lived Intangible Assets [Line Items]
Total accumulated amortization	$ (910)	$ (806)