Acquisition, Goodwill, And Other Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended			0 Months Ended	3 Months Ended			12 Months Ended
	Sep. 30, 2010	Dec. 31, 2011 years	Dec. 31, 2010	Dec. 31, 2009	Apr. 21, 2010 Chordiant Software, Inc. [Member]	Mar. 31, 2011 Chordiant Software, Inc. [Member]	Dec. 31, 2010 Chordiant Software, Inc. [Member]	Sep. 30, 2010 Chordiant Software, Inc. [Member]	Dec. 31, 2011 Chordiant Software, Inc. [Member] years	Dec. 31, 2011 Technology Designs [Member] years	Dec. 31, 2011 Non-Compete Agreements [Member] years
Acquisition, Goodwill, and Other Intangible Assets [Line Items]
Acquisition date									April 21, 2010
Aggregate purchase price of acquired entity									$ 160,351,000
Cash									156,832,000
Purchase price of acquired entity paid by issuance of stock options									3,519,000
Number of stock options issued as replacement of outstanding shares of acquiree					241,000
Compensation expense associated with replacement awards		(2,854,000)	(2,185,000)	(1,688,000)	200,000
Decrease in other accrued liabilities						1,800,000
Increase in net deferred tax assets						400,000	1,800,000	31,500,000
Increase (decrease) to goodwill	(29,400,000)					(2,200,000)	1,000,000
Federal net operating losses utilizable in acquisition								146,000,000	125,000,000
Federal net operating losses, date through which is subject to annual limitations								2029	2029
Decrease in accrued federal income taxes								300,000
Increase to accrued liabilities							3,400,000
Decrease in acquired intangible assets	(2,400,000)
Federal and foreign net operating losses utilizable in acquisition									150,800,000
Decrease to long-term liabilities							600,000
Acquisition related goodwill							18,100,000		18,060,000
Acquired intangibles weighted-average period of amortization, years									8.4
Amortization expense of acquired intangibles assets									88,000,000
Acquisition-related costs including transaction costs									$ 8,500,000
Intangible assets, useful life minimum, years		4								4	4
Intangible assets, useful life maximum, years		9								5	5
Number of operating segments operated by Company		1
Number of Company reporting units		1