Income Taxes (Components Of Net Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Abstract]
Net operating loss carryforwards	$ 62,918	$ 63,805	[1]
Accruals and reserves	14,951	9,103	[1]
Software revenue	7,024	1,332	[1]
Depreciation	3,635	2,652	[1]
Tax credit carryforwards	3,964	4,991	[1]
Other	5	67	[1]
Total deferred tax assets	92,497	81,950	[1]
Less valuation allowances	(13,057)	(12,739)	[1]
Net deferred tax assets	79,440	69,211	[1]
Software revenue		(429)	[1]
Intangibles	(26,328)	(30,243)	[1]
Total deferred tax liabilities	(26,328)	(30,672)	[1]
Net deferred income taxes	53,112	38,539	[1]
Current deferred tax asset	9,826	4,770	[1]
Long-term deferred income tax assets	43,286	33,769	[1]
Total deferred income taxes	$ 53,112	$ 38,539	[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. See Note 9 "Acquisition, Goodwill, and Other Intangible Assets" for further discussion of these adjustments.