Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Total revenues	$ 128,477	$ 121,581	$ 259,961	$ 242,416
Expenses:
Compensation and employee benefits	45,099	45,994	90,886	92,678
Transaction processing	25,969	25,482	53,049	50,338
Occupancy and equipment	15,055	14,680	29,830	30,302
Telecommunications and data processing services	12,988	12,129	25,591	24,156
Restructuring charges			7,165
Other general and administrative	29,132	17,699	46,823	35,014
Interest expense	488	510	974	1,030
Total expenses	128,731	116,494	254,318	233,518
(Loss) income before income tax expense	(254)	5,087	5,643	8,898
Income tax expense (benefit)	2,781	444	4,301	(1,047)
Net (loss) income	$ (3,035)	$ 4,643	$ 1,342	$ 9,945
(Loss) Income per share:
Basic (in dollars per share)	$ (0.09)	$ 0.14	$ 0.04	$ 0.30
Diluted (in dollars per share)	$ (0.09)	$ 0.14	$ 0.04	$ 0.29
Basic weighted average number of common shares outstanding (in shares)	33,035	33,125	32,963	33,037
Diluted weighted average number of common shares outstanding (in shares)	33,035	34,222	33,986	34,180
Commissions and fees
Revenues:
Total revenues	$ 106,451	$ 100,564	$ 216,020	$ 200,444
Recurring
Revenues:
Total revenues	20,082	18,933	39,644	37,883
Other
Revenues:
Total revenues	$ 1,944	$ 2,084	$ 4,297	$ 4,089