Acquisition, Goodwill, And Other Intangible Assets (Changes In Carrying Amount Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2010 Recasted [Member]
Goodwill [Line Items]
Balance as of January 1,	$ 20,451	$ 20,451	$ 2,391	[1]
Goodwill acquired during the year			20,227	[1]
Purchase price adjustments to goodwill retrospectively applied			(2,167)	[1]
Balance as of December 31,	$ 20,451	$ 20,451	$ 20,451	[1]

[1] The purchase price adjustments related to the Chordiant acquisition identified during the first quarter of 2011 were retrospectively applied as of December 31, 2010.