Consolidated Statements of Cash Flows (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Operating Activities:
Net income	$ 34,814	$ 44,849
Adjustments to reconcile net income to net cash (used in)/provided by operating activities:
Depreciation and amortization	12,070	11,579
Amortization of loans and advances to financial advisors and other employees	28,544	23,528
Amortization of premium on available-for-sale securities	6,039	3,213
Provision for loan losses and allowance for loans and advances to financial advisors and other employees	586	(914)
Amortization of intangible assets	2,377	1,472
Deferred income taxes	12,598	(5,869)
Stock-based compensation	14,368	32,429
Excess tax benefits from stock-based compensation	(23,574)	(13,122)
Gain on the sale of investments	(4,670)	(26)
Other, net	1,066	(1,058)
Decrease/(increase) in operating assets:
Cash segregated for regulatory purposes and restricted cash	5,990	0
Receivables:
Brokerage clients	(13,981)	(58,089)
Brokers, dealers and clearing organizations	(63,093)	113,378
Securities purchased under agreements to resell	25,932	36,186
Trading securities owned, including those pledged	(159,794)	(21,607)
Loans originated as mortgages held for sale	(349,421)	(386,444)
Proceeds from mortgages held for sale	378,466	386,647
Loans and advances to financial advisors and other employees	(21,951)	(18,711)
Other assets	(20,748)	19,712
Increase/(decrease) in operating liabilities:
Brokerage clients	56,107	3,764
Brokers, dealers and clearing organizations	19,419	(34,177)
Drafts	(25,401)	(19,729)
Trading securities sold, but not yet purchased	91,325	(23,907)
Other liabilities and accrued expenses	(84,150)	(69,550)
Net cash (used in)/provided by operating activities	(77,082)	23,554
Investing Activities:
Maturities, calls and principal paydowns on available-for-sale securities	277,866	63,078
Maturities, calls and principal paydowns on held-to-maturity securities	600	0
Sale or maturity of investments	50,234	38,180
Sale of bank branch	0	13,905
Sale of bank foreclosed assets held for sale	560	1,934
Increase in bank loans, net	(87,409)	(32,897)
Payments for:
Purchase of available-for-sale securities	(362,847)	(215,828)
Purchase of held-to-maturity securities	(25,334)	0
Purchase of investments	(33,883)	(54,896)
Purchase of fixed assets	(26,181)	(11,808)
Purchase of bank foreclosed assets held for sale	(225)	0
Acquisitions	0	(500)
Net cash used in investing activities	(206,619)	(198,832)
Financing Activities:
Net proceeds from short-term borrowings from banks	120,800	73,100
Decrease in securities sold under agreements to repurchase	(67,131)	(63,949)
Increase in bank deposits, net	17,511	225,701
Increase in securities loaned	87,965	55,081
Excess tax benefits from stock-based compensation	23,574	13,122
Issuance of common stock	0	865
Repurchase of common stock	(3,555)	(24,428)
Reissuance of treasury stock	2,234	508
Payment of Federal Home Loan Bank advances	0	(2,000)
Extinguishment of subordinated debt	(1,284)	(1,840)
Net cash provided by financing activities	180,114	276,160
Effect of exchange rate changes on cash	1,022	0
(Decrease)/increase in cash and cash equivalents	(102,565)	100,882
Cash and cash equivalents at beginning of period	253,529	161,820
Cash and cash equivalents at end of period	150,964	262,702
Supplemental disclosure of cash flow information:
Cash paid for interest	12,520	4,654
Cash paid for income taxes, net of refunds	6,036	25,107
Noncash investing and financing activities:
Units, net of forfeitures	$ 101,220	$ 54,524