Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Commissions and fees	$ 100,564	$ 94,696	$ 200,444	$ 193,656
Recurring	18,933	21,811	37,883	44,006
Other	2,084	4,103	4,089	7,616
Total revenues	121,581	120,610	242,416	245,278
Expenses:
Compensation and employee benefits	45,994	48,315	92,678	100,779
Transaction processing	25,482	22,098	50,338	44,932
Occupancy and equipment	14,680	14,066	30,302	28,044
Telecommunications and data processing services	12,129	14,848	24,156	29,621
Restructuring charge		4,355		4,355
Other general and administrative	17,699	26,014	35,014	49,736
Interest expense	510	572	1,030	1,107
Total expenses	116,494	130,268	233,518	258,574
Income (loss) before income tax expense (benefit)	5,087	(9,658)	8,898	(13,296)
Income tax expense (benefit)	444	(4,441)	(1,047)	(5,573)
Net income (loss)	$ 4,643	$ (5,217)	$ 9,945	$ (7,723)
Income (loss) per share:
Basic (in dollars per share)	$ 0.14	$ (0.16)	$ 0.30	$ (0.23)
Diluted (in dollars per share)	$ 0.14	$ (0.16)	$ 0.29	$ (0.23)
Basic weighted average number of common shares outstanding (in shares)	33,125	33,189	33,037	33,147
Diluted weighted average number of common shares outstanding (in shares)	34,222	33,189	34,180	33,147