Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Consolidated net income (loss)	$ 239,395	$ 187,475
Adjustments to reconcile consolidated net income (loss) to net cash provided by operating activities:
Fixed asset depreciation and intangible asset amortization	61,201	58,121
Amortization of mortgage servicing rights, net	53,001	48,334
Employee loan amortization and reserves on employee loans	43,227	46,003
Equity-based compensation and allocations of net income to limited partnership units and FPUs	185,135	150,023
Deferred compensation expense	7,265	14,318
Gain on originated mortgage servicing rights	(98,814)	(92,555)
Unrealized losses (gains) on loans held for sale	(507)	(2,277)
Losses (gains) on equity method investments	(3,986)	(2,547)
Amortization of discount (premium) on notes payable	(1,912)	(1,465)
Unrealized (gain) loss on marketable securities	(23,038)	(973)
Impairment of fixed assets, intangible assets and equity method investments	8,499	3,738
Deferred tax provision (benefit)	2,263	(57,915)
Sublease provision adjustment		(807)
Recognition of earn-out	(76,969)	(67,016)
Realized losses (gains) on marketable securities	(1,222)	(11,792)
Change in estimated acquisition earn-out payables	5,946	(15,822)
Loss (gains) on sale of cost method investment		(7,051)
Forfeitures of Class A common stock	(672)	(374)
Other	(557)	(453)
Consolidated net income (loss), adjusted for non-cash and non-operating items	398,255	246,965
Decrease (increase) in operating assets:
Cash segregated under regulatory requirements	3,106	(7,017)
Reverse repurchase agreements	54,659
Securities owned	3,236	(179,695)
Loans held for sale, net	412,011	(235,811)
Receivables from broker-dealers, clearing organizations, customers and related broker-dealers	(1,789,576)	(950,964)
Mortgage servicing rights, net	(506)	(5,844)
Accrued commissions and other receivables, net	(99,138)	(19,632)
Loans, forgivable loans and other receivables from employees and partners, net	(82,549)	(142,409)
Receivables from related parties	(3,566)	7,136
Other assets	(17,586)	8,200
Increase (decrease) in operating liabilities:
Securities loaned	135,070	(117,967)
Repurchase agreements	1,803
Accrued compensation	(37,275)	(32,716)
Payables to broker-dealers, clearing organizations, customers and related broker-dealers	1,731,395	900,528
Payables to related parties	(6,493)	(991)
Accounts payable, accrued and other liabilities	81,660	81,260
Net cash provided by (used in) operating activities	784,506	(448,957)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of fixed assets	(28,998)	(37,646)
Capitalization of software development costs	(27,841)	(17,595)
Purchase of equity method investments	(101,623)	(1,112)
Proceeds from equity method investments	243
Payments for acquisitions, net of cash acquired	(99,999)	(119,212)
Advances to related party	(375,000)	(175,000)
Repayments from related party	375,000	175,000
Proceeds from divestitures, net		150
Purchase of marketable securities	0	(68,396)
Proceeds from sale of marketable securities	7,849	618,090
Proceeds from sale of cost method investments		7,106
Capitalization of trademarks, patent defense and registration costs	(295)	(420)
Net cash provided by (used in) investing activities	(250,664)	380,965
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of collateralized borrowings	(7,060)	(5,121)
Repayments of convertible notes		(159,932)
Issuance of senior notes, net of deferred issuance costs		295,768
Issuance of long-term debt and collateralized borrowings, net of deferred issuance costs	998,817	(1,066)
Proceeds from warehouse notes payable	7,314,793	5,503,899
Repayments on warehouse notes payable	(6,913,030)	(5,673,614)
Earnings distributions	(89,537)	(60,629)
Redemption and repurchase of limited partnership interests	(34,113)	(27,664)
Dividends to stockholders	(148,094)	(126,318)
Repurchase of Class A common stock	(14,557)	(72,700)
Cancellation of restricted stock units in satisfaction of withholding tax requirements	(52)	(1,542)
Proceeds from issuance of Class A common stock, net of costs		15,280
Deemed contribution due to acquisition of Lucera		10,145
Acquisition of Berkeley Point	(871,814)
Pre-acquisition distribution from Berkeley Point to CCRE	(66,782)
Proceeds from exercise of stock options		86
Proceeds from short-term borrowings	6,313
Payments on acquisitions earn-outs	(12,211)	(6,151)
Net cash provided by (used in) financing activities	(527,327)	11,441
Advances from related party	291,000	770,000
Repayments to related party	(981,000)	(449,000)
Effect of exchange rate changes on cash and cash equivalents	3,853	2,954
Net (decrease) increase in cash and cash equivalents	10,368	(53,597)
Cash and cash equivalents at beginning of period	535,613	563,028
Cash and cash equivalents at end of period	545,981	509,431
Supplemental cash information:
Cash paid during the period for taxes	32,136	55,263
Cash paid during the period for interest	68,331	54,146
Supplemental non-cash information:
Issuance of Class A common stock upon exchange of limited partnership interests	74,013	53,754
Issuance of Class A and contingent Class A common stock and limited partnership interests for acquisitions	14,232	5,857
Issuance of Class A common stock upon conversion of convertible notes		68
Distribution from Berkeley Point to CCRE	2,993
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Supplemental non-cash information:
Shares received	$ 76,969	$ 67,016