Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues:
Commissions and fees	$ 98,378	$ 89,795	$ 310,254	$ 289,942
Recurring	25,761	26,707	77,384	82,173
Other	3,419	3,115	11,263	10,787
Total revenues	127,558	119,617	398,901	382,902
Expenses:
Compensation and employee benefits	49,664	47,135	150,415	149,262
Transaction processing	19,790	19,336	63,821	61,208
Occupancy and equipment	15,821	16,033	53,082	45,745
Telecommunications and data processing services	12,649	15,034	40,465	44,813
Other general and administrative	18,351	21,220	56,887	67,494
Goodwill impairment				274,285
Restructuring charges			(75)
Interest expense	593	678	1,894	1,980
Total expenses	116,868	119,436	366,489	644,787
Income (loss) before income tax benefit	10,690	181	32,412	(261,885)
Income tax expense (benefit)	2,975	(51)	10,989	(20,479)
Net income (loss)	$ 7,715	$ 232	$ 21,423	$ (241,406)
Income (loss) per share:
Basic (in dollars per share)	$ 0.21	$ 0.01	$ 0.58	$ (6.24)
Diluted (in dollars per share)	$ 0.20	$ 0.01	$ 0.56	$ (6.24)
Basic weighted average number of common shares outstanding (in shares)	36,544	38,301	36,956	38,672
Diluted weighted average number of common shares outstanding (in shares)	37,781	39,252	38,214	38,672