Condensed Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	$ 230,314	$ 287,452
Cash restricted or segregated under regulations and other	19,242	18,599
Deposits with clearing organizations	71,520	57,388
Securities owned, at fair value	1,256	1,559
Receivables from brokers, dealers and clearing organizations	190,518	193,907
Receivables from customers	118,357	74,695
Premises and equipment, net	52,947	53,960
Capitalized software, net	40,730	41,259
Goodwill	11,465	11,054
Intangibles, net	13,869	14,040
Income taxes receivable	873	3,917
Deferred taxes assets	4,386	4,902
Other assets	45,191	22,124
Total assets	800,668	784,856
Liabilities:
Accounts payable and accrued expenses	171,351	166,495
Short-term bank loans	83,414	101,422
Payables to brokers, dealers and clearing organizations	132,143	119,278
Payables to customers	41,196	23,568
Securities sold, not yet purchased, at fair value		1
Income taxes payable	5,377	6,003
Deferred tax liabilities	1,741	1,750
Term debt	2,509	3,104
Total liabilities	437,731	421,621
Commitments and contingencies
Stockholders' Equity:
Preferred stock, $0.01 par value; 1,000,000 shares authorized; no shares issued or outstanding
Common stock, $0.01 par value; 100,000,000 shares authorized; 52,717,707 and 52,639,823 shares issued at March 31, 2018 and December 31, 2017, respectively	527	526
Additional paid-in capital	242,008	250,216
Retained earnings	488,993	486,957
Common stock held in treasury, at cost; 19,680,039 and 20,038,809 shares at March 31, 2018 and December 31, 2017, respectively	(348,263)	(353,067)
Accumulated other comprehensive loss (net of tax)	(20,328)	(21,397)
Total stockholders' equity	362,937	363,235
Total liabilities and stockholders' equity	$ 800,668	$ 784,856