Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents	$ 251,963	$ 277,977
Cash restricted or segregated under regulations and other	16,982	40,353
Deposits with clearing organizations	74,114	62,556
Securities owned, at fair value	1,923	2,557
Receivables from brokers, dealers and clearing organizations	242,924	152,294
Receivables from customers	177,185	54,486
Premises and equipment, net	56,369	59,333
Capitalized software, net	40,140	38,606
Goodwill	10,613	10,102
Intangibles, net	14,823	15,390
Income taxes receivable	49	873
Deferred taxes	46,619	38,688
Other assets	22,972	22,070
Total assets	956,676	775,285
Liabilities:
Accounts payable and accrued expenses	146,932	174,343
Short-term bank loans	85,509	72,150
Payables to brokers, dealers and clearing organizations	196,412	100,188
Payables to customers	105,539	12,272
Securities sold, not yet purchased, at fair value		249
Income taxes payable	5,055	4,552
Term debt	3,050	6,367
Total liabilities	542,497	370,121
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; 52,605,650 and 52,456,165 shares issued at June 30, 2017 and December 31, 2016, respectively	526	525
Additional paid-in capital	242,236	248,748
Retained earnings	540,986	536,350
Common stock held in treasury, at cost; 19,484,422 and 19,830,032 shares at June 30, 2017 and December 31, 2016, respectively	(342,348)	(346,482)
Accumulated other comprehensive loss (net of tax)	(27,221)	(33,977)
Total stockholders' equity	414,179	405,164
Total liabilities and stockholders' equity	$ 956,676	$ 775,285