CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2009	$ 205,219	$ 368	$ 121,389	$ 81,776	$ 1,686
Beginning balance (in shares) at Dec. 31, 2009		36,818
Repurchase of common stock (in shares)		(295)
Repurchase of common stock	(8,292)	(3)	(8,289)
Issuance of common stock for share-based compensation plans (in shares)		690
Issuance of common stock for share-based compensation plans	(4,713)	7	(4,720)
Issuance of stock under Employee Stock Purchase Plan (in shares)		22
Issuance of stock under Employee Stock Purchase Plan	595		595
Issuance of stock awards (in shares)		15
Issuance of stock awards	420		420
Stock-based compensation expense	6,325		6,325
Value of stock options issued for acquisition of Chordiant	3,519		3,519
Tax benefit from exercise or vesting of equity awards, net of deferred tax asset deficiencies	3,368		3,368
Cash dividends declared	(4,454)			(4,454)
Other comprehensive income	(426)				(426)
Net income (loss)	(5,891)			(5,891)
Ending balance at Dec. 31, 2010	195,670	372	122,607	71,431	1,260
Ending balance (in shares) at Dec. 31, 2010		37,250
Repurchase of common stock (in shares)		(139)
Repurchase of common stock	(4,864)	(1)	(4,863)
Issuance of common stock for share-based compensation plans (in shares)		575
Issuance of common stock for share-based compensation plans	(4,287)	6	(4,293)
Issuance of stock under Employee Stock Purchase Plan (in shares)		18
Issuance of stock under Employee Stock Purchase Plan	647		647
Issuance of stock awards (in shares)		8
Issuance of stock awards	350		350
Stock-based compensation expense	8,678		8,678
Tax benefit from exercise or vesting of equity awards, net of deferred tax asset deficiencies	6,575		6,575
Cash dividends declared	(4,510)			(4,510)
Other comprehensive income	389				389
Net income (loss)	10,108			10,108
Ending balance at Dec. 31, 2011	208,756	377	129,701	77,029	1,649
Ending balance (in shares) at Dec. 31, 2011		37,712
Repurchase of common stock (in shares)		(185)
Repurchase of common stock	(5,206)	(2)	(5,204)
Issuance of common stock for share-based compensation plans (in shares)		382
Issuance of common stock for share-based compensation plans	(3,865)	4	(3,869)
Exercise of common stock warrants (in shares)		2
Issuance of stock under Employee Stock Purchase Plan (in shares)		22
Issuance of stock under Employee Stock Purchase Plan	603		603
Issuance of stock awards (in shares)		12
Stock-based compensation expense	11,506		11,506
Tax benefit from exercise or vesting of equity awards, net of deferred tax asset deficiencies	5,839		5,839
Cash dividends declared	(4,548)			(4,548)
Other comprehensive income	1,526				1,526
Net income (loss)	21,868			21,868
Ending balance at Dec. 31, 2012	$ 236,479	$ 379	$ 138,576	$ 94,349	$ 3,175
Ending balance (in shares) at Dec. 31, 2012		37,945