Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues:
Commissions and fees	$ 110,860	$ 106,453	$ 229,786	$ 214,877
Recurring	26,447	24,975	53,379	50,552
Other	3,187	7,038	7,056	10,646
Total revenues	140,494	138,466	290,221	276,075
Expenses:
Compensation and employee benefits	53,899	52,720	111,307	103,897
Transaction processing	25,187	20,109	49,760	40,605
Occupancy and equipment	14,470	14,985	28,842	30,063
Telecommunications and data processing services	13,011	12,655	25,783	25,352
Other general and administrative	42,408	20,715	60,165	39,820
Interest expense	468	594	973	1,230
Total expenses	149,443	121,778	276,830	240,967
(Loss) income before income tax expense	(8,949)	16,688	13,391	35,108
Income tax expense	1,261	3,762	6,868	8,562
Net (loss) income	$ (10,210)	$ 12,926	$ 6,523	$ 26,546
(Loss) income per share:
Basic (in dollars per share)	$ (0.30)	$ 0.36	$ 0.19	$ 0.74
Diluted (in dollars per share)	$ (0.30)	$ 0.35	$ 0.18	$ 0.72
Basic weighted average number of common shares outstanding (in shares)	34,076	35,720	34,172	35,900
Diluted weighted average number of common shares outstanding (in shares)	34,076	36,641	35,329	36,933