Consolidated Statements of Financial Condition (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 261,897	$ 245,875
Cash restricted or segregated under regulations and other	71,202	61,117
Deposits with clearing organizations	74,771	29,149
Securities owned, at fair value	7,436	10,086
Receivables from brokers, dealers and clearing organizations	1,018,342	1,107,119
Receivables from customers	591,004	546,825
Premises and equipment, net	66,171	54,989
Capitalized software, net	37,892	43,994
Other intangibles, net	31,201	35,227
Income taxes receivable	54	7,460
Deferred taxes	34,130	39,155
Other assets	15,787	15,763
Total assets	2,209,887	2,196,759
Liabilities:
Accounts payable and accrued expenses	175,931	165,062
Short-term bank loans	73,539	22,154
Payables to brokers, dealers and clearing organizations	1,025,268	1,337,459
Payables to customers	469,264	226,892
Securities sold, not yet purchased, at fair value	2,953	5,249
Income taxes payable	14,805	10,608
Deferred taxes	363	293
Term debt	30,332	19,272
Total liabilities	1,792,455	1,786,989
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; 52,158,374 and 52,037,011 shares issued at December 31, 2013 and 2012, respectively	522	520
Additional paid-in capital	240,057	245,002
Retained earnings	436,570	405,485
Common stock held in treasury, at cost; 16,005,500 and 14,677,872 shares at December 31, 2013 and 2012, respectively	(268,253)	(253,111)
Accumulated other comprehensive income (net of tax)	8,536	11,874
Total stockholders' equity	417,432	409,770
Total liabilities and stockholders' equity	$ 2,209,887	$ 2,196,759