GAMCO Investors (GAMI) 10-Q7 Nov 142014 Q3 Quarterly reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 31, 2014	Oct. 31, 2014
	Sep. 30, 2014	Class A [Member]	Class B [Member]
Entity Information [Line Items]	'	'	'
Entity Registrant Name	'GAMCO INVESTORS, INC. ET AL	'	'
Entity Central Index Key	'0001060349	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	6,540,443	19,279,260
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'Q3	'	'
Document Type	'10-Q	'	'
Amendment Flag	'false	'	'
Document Period End Date	30-Sep-14	'	'

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF INCOME UNAUDITED (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues	'	'	'	'
Investment advisory and incentive fees	$92,591	$80,438	$270,544	$230,488
Distribution fees and other income	15,727	13,545	46,367	37,420
Institutional research services	2,540	2,394	6,720	6,940
Total revenues	110,858	96,377	323,631	274,848
Expenses	'	'	'	'
Compensation	43,316	39,803	131,258	113,214
Management fee	3,756	5,629	13,628	14,455
Distribution costs	15,101	12,769	44,087	35,650
Other operating expenses	5,099	5,448	17,036	16,290
Total expenses	67,272	63,649	206,009	179,609
Operating income	43,586	32,728	117,622	95,239
Other income (expense)	'	'	'	'
Net gain from investments	-9,086	19,334	7,602	43,766
Interest and dividend income	1,084	1,134	3,557	4,986
Interest expense	-1,987	-2,164	-6,000	-8,448
Shareholder-designated contribution	0	-313	-134	-5,313
Total other income, net	-9,989	17,991	5,025	34,991
Income before income taxes	33,597	50,719	122,647	130,230
Income tax provision	13,045	17,515	44,796	46,434
Net income	20,552	33,204	77,851	83,796
Net income attributable to noncontrolling interests	-3,113	106	-2,718	260
Net income attributable to GAMCO Investors, Inc.'s shareholders	$23,665	$33,098	$80,569	$83,536
Net income attributable to GAMCO Investors, Inc.'s shareholders	'	'	'	'
Basic (in dollars per share)	$0.94	$1.29	$3.17	$3.25
Diluted (in dollars per share)	$0.93	$1.29	$3.15	$3.25
Weighted average shares outstanding:	'	'	'	'
Basic (in shares)	25,296	25,625	25,385	25,682
Diluted (in shares)	25,517	25,700	25,595	25,717
Dividends declared: (in dollars per share)	$0.06	$0.06	$0.18	$0.16

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME UNAUDITED (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Comprehensive Income [Abstract]	'	'	'	'
Net income	$20,552	$33,204	$77,851	$83,796
Other comprehensive income, net of tax	'	'	'	'
Foreign currency translation	-45	49	-15	1
Net unrealized gains on securities available for sale, net of tax	-2,407	-2,170	-6,832	-3,030
Other comprehensive income	-2,452	-2,121	-6,847	-3,029
Comprehensive income	18,100	31,083	71,004	80,767
Less: Comprehensive income attributable to noncontrolling interests	3,113	-106	2,718	-260
Comprehensive income attributable to GAMCO Investors, Inc.	$21,213	$30,977	$73,722	$80,507

CONDENSED_CONSOLIDATED_STATEME2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME UNAUDITED (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Comprehensive Income [Abstract]	'	'	'	'
Net unrealized gains on securities available for sale, income tax	($1,414)	($1,274)	($4,013)	($1,780)

CONDENSED_CONSOLIDATED_STATEME3

CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION UNAUDITED (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
ASSETS	'	'	'
Cash and cash equivalents	$358,421	$210,451	$245,411
Investments in securities	254,630	231,228	237,744
Investments in sponsored registered investment companies	39,520	44,042	43,688
Investments in partnerships	107,434	95,992	97,752
Receivable from brokers	79,885	49,461	43,854
Investment advisory fees receivable	31,155	51,506	31,151
Income tax receivable	2,433	445	433
Other assets	25,282	26,360	34,589
Total assets	898,760	709,485	734,622
Liabilities and Equity	'	'	'
Payable to brokers	46,790	10,765	14,675
Income taxes payable and deferred tax liabilities	27,412	39,846	28,726
Capital lease obligation	5,272	5,323	5,331
Compensation payable	93,535	34,663	86,174
Securities sold, not yet purchased	14,180	6,178	7,725
Mandatorily redeemable noncontrolling interests	1,304	1,355	1,327
Accrued expenses and other liabilities	31,007	32,511	28,906
Sub-total	219,500	130,641	172,864
5.5% Senior notes (due May 15, 2013)	0	0	0
5.875% Senior notes (due June 1, 2021)	100,000	100,000	100,000
Zero coupon subordinated debentures, Face value: $21.7 million at June 30, 2013 and December 31, 2012 and $86.3 million at June 30, 2012 (due December 31, 2015)	11,941	11,911	17,347
Total liabilities	331,441	242,552	290,211
Redeemable noncontrolling interests	56,086	6,751	5,765
Commitments and contingencies (Note J)	'	'	'
GAMCO Investors, Inc. stockholders' equity	'	'	'
Preferred Stock	'	'	'
Additional paid-in capital	289,664	282,496	281,194
Retained earnings	582,357	506,441	487,702
Accumulated other comprehensive income	23,392	30,239	23,271
Total GAMCO Investors, Inc. stockholders' equity	508,494	457,331	435,857
Noncontrolling interests	2,739	2,851	2,789
Total equity	511,233	460,182	438,646
Total liabilities and equity	898,760	709,485	734,622
Class A [Member]	'	'	'
GAMCO Investors, Inc. stockholders' equity	'	'	'
Common Stock	14	14	14
Treasury stock, at cost (8,118,237, 8,081,561 and 7,167,981 shares, respectively)	-386,952	-361,878	-356,343
Class B [Member]	'	'	'
GAMCO Investors, Inc. stockholders' equity	'	'	'
Common Stock	$19	$19	$19

CONDENSED_CONSOLIDATED_STATEME4

CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION UNAUDITED (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Liabilities and Equity	'	'	'
Zero coupon subordinated debentures, face value	$13.10	$13.80	$20.50
GAMCO Investors, Inc. stockholders equity	'	'	'
Preferred Stock, par value (in dollars per share)	$0.00	$0.00	$0.00
Preferred Stock, shares authorized (in shares)	10,000,000	10,000,000	10,000,000
Common Stock, outstanding (in shares)	25,900,000	26,100,000	26,000,000
Class A [Member]	'	'	'
GAMCO Investors, Inc. stockholders equity	'	'	'
Common Stock, par value (in dollars per share)	$0.00	$0.00	$0.00
Common Stock, shares authorized (in shares)	100,000,000	100,000,000	100,000,000
Common Stock, issued (in shares)	15,230,433	15,012,719	14,833,469
Common Stock, outstanding (in shares)	6,599,982	6,701,930	6,592,649
Treasury stock, shares (in shares)	8,630,451	8,310,789	8,240,820
Class B [Member]	'	'	'
GAMCO Investors, Inc. stockholders equity	'	'	'
Common Stock, par value (in dollars per share)	$0.00	$0.00	$0.00
Common Stock, shares authorized (in shares)	100,000,000	100,000,000	100,000,000
Common Stock, issued (in shares)	24,000,000	24,000,000	24,000,000
Common Stock, outstanding (in shares)	19,279,260	19,384,174	19,424,174

CONDENSED_CONSOLIDATED_STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY UNAUDITED (USD $)	Noncontrolling Interests [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Comprehensive Income [Member]	Treasury Stock [Member]	Total	Redeemable Noncontrolling Interests [Member]
In Thousands	Noncontrolling Interests [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Comprehensive Income [Member]	Treasury Stock [Member]	Total	Redeemable Noncontrolling Interests [Member]
Balance at Dec. 31, 2012	$3,326	$33	$280,089	$408,295	$26,300	($347,109)	$370,934	$17,362
Redemptions of redeemable noncontrolling interests	-524	0	0	0	0	0	-524	-15,356
Contributions from redeemable noncontrolling interests	0	0	0	0	0	0	0	3,486
Net income	-13	0	0	83,536	0	0	83,523	273
Net unrealized gains on securities available for sale, net of tax	0	0	0	0	9,331	0	9,331	0
Foreign currency translation	0	0	0	0	1	0	1	0
Dividends declared	0	0	0	-4,129	0	0	-4,129	0
Stock based compensation expense	0	0	770	0	0	0	770	0
Exercise of stock options including tax benefit	0	0	92	0	0	0	92	0
Purchase of treasury stock	0	0	0	0	0	-9,234	-9,234	0
Balance at Sep. 30, 2013	2,789	33	281,194	487,702	23,271	-356,343	438,646	5,765
Balance at Jun. 30, 2013	'	'	'	'	'	'	'	'
Amount reclassed out of accumulated other comprehensve income, net of income tax benefit	0	0	0	0	-12,361	0	-12,361	0
Income tax effect of transaction with shareholders	0	0	243	0	0	0	243	0
Foreign currency translation	'	'	'	'	'	'	49	'
Balance at Sep. 30, 2013	2,789	33	281,194	487,702	23,271	-356,343	438,646	5,765
Balance at Dec. 31, 2013	2,851	33	282,496	506,441	30,239	-361,878	460,182	6,751
Redemptions of redeemable noncontrolling interests	0	0	0	0	0	0	0	-1,666
Contributions from redeemable noncontrolling interests	0	0	0	0	0	0	0	53,607
Net income	-112	0	0	80,569	0	0	80,457	-2,606
Net unrealized gains on securities available for sale, net of tax	0	0	0	0	-2,371	0	-2,371	0
Amount reclassed out of accumulated other comprehensve income, net of income tax benefit	0	0	0	0	-4,461	0	-4,461	0
Foreign currency translation	0	0	0	0	-15	0	-15	0
Dividends declared	0	0	0	-4,653	0	0	-4,653	0
Stock based compensation expense	0	0	5,182	0	0	0	5,182	0
Exercise of stock options including tax benefit	0	0	1,986	0	0	0	1,986	0
Purchase of treasury stock	0	0	0	0	0	-25,074	-25,074	0
Balance at Sep. 30, 2014	$2,739	$33	$289,664	$582,357	$23,392	($386,952)	$511,233	$56,086

CONDENSED_CONSOLIDATED_STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF EQUITY UNAUDITED (Parenthetical) (USD $)	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Condensed Consolidated Statements of Equity [Abstract]	'	'
Net unrealized gains on securities available for sale, income tax	$1,393	$5,479
Amounts reclassed from accumulated other comprehensive income, income tax benefit	$2,620	$7,259
Dividends declared (in dollars per share)	$0.18	$0.16

CONDENSED_CONSOLIDATED_STATEME7

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS UNAUDITED (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating activities	'	'
Net income	$77,851,000	$83,796,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:	'	'
Equity in net gains from partnerships	-572,000	-1,211,000
Depreciation and amortization	507,000	605,000
Stock based compensation expense	5,182,000	770,000
Deferred income taxes	-3,472,000	1,495,000
Tax benefit from exercise of stock options	349,000	16,000
Foreign currency translation gain/(loss)	-15,000	1,000
Other-than-temporary loss on available for sale securities	69,000	14,000
Fair value of donated securities	1,502,000	1,880,000
Gains on sales of available for sale securities	-3,511,000	-16,191,000
Accretion of zero coupon debentures	661,000	964,000
Loss on extinguishment of debt	84,000	137,000
(Increase) decrease in assets:	'	'
Investments in trading securities	-22,376,000	-11,730,000
Investments in partnerships:	'	'
Contributions to partnerships	-15,698,000	-10,124,000
Distributions from partnerships	4,828,000	11,134,000
Receivable from brokers	-30,424,000	6,801,000
Investment advisory fees receivable	20,351,000	11,278,000
Income tax receivable and deferred tax assets	-1,988,000	584,000
Other assets	563,000	-7,436,000
Increase (decrease) in liabilities:	'	'
Payable to brokers	36,026,000	329,000
Income taxes payable and deferred tax liabilities	-4,950,000	3,613,000
Compensation payable	58,873,000	75,639,000
Mandatorily redeemable noncontrolling interests	-51,000	-15,000
Accrued expenses and other liabilities	-1,639,000	3,144,000
Total adjustments	44,299,000	71,697,000
Net cash provided by operating activities	122,150,000	155,493,000
Investing activities	'	'
Purchases of available for sale securities	-6,252,000	-8,427,000
Proceeds from sales of available for sale securities	8,018,000	32,422,000
Return of capital on available for sale securities	827,000	1,094,000
Net cash provided by investing activities	2,593,000	25,089,000
Financing activities	'	'
Contributions from redeemable noncontrolling interests	53,607,000	3,486,000
Redemptions of redeemable noncontrolling interests	-1,666,000	-15,356,000
Repayments of Senior Debt, Total	0	-99,000,000
Payments to Noncontrolling Interests	0	-524,000
Proceeds from exercise of stock options	1,637,000	76,000
Repurchase of zero coupon subordinated debentures	-715,000	-1,119,000
Dividends paid	-4,567,000	-4,108,000
Purchase of treasury stock	-25,074,000	-9,234,000
Net cash provided used in financing activities	23,222,000	-125,779,000
Effect of exchange rates on cash and cash equivalents	5,000	0
Net increase in cash and cash equivalents	147,970,000	54,803,000
Cash and cash equivalents at beginning of period	210,451,000	190,608,000
Cash and cash equivalents at end of period	358,421,000	245,411,000
Supplemental disclosures of cash flow information:	'	'
Cash paid for interest	3,847,000	6,607,000
Cash paid for taxes	$52,956,000	$40,500,000

CONDENSED_CONSOLIDATED_STATEME8

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Non-cash activity:	'	'
Accrued restricted stock award dividends	$86	$21

Significant_Accounting_Policie

Significant Accounting Policies	9 Months Ended
Significant Accounting Policies	Sep. 30, 2014
Significant Accounting Policies [Abstract]	'
Significant Accounting Policies	'
	A. Significant Accounting Policies

	Basis of Presentation

	Unless we have indicated otherwise, or the context otherwise requires, references in this report to "GAMCO Investors, Inc.," "GAMCO," "the Company," "GBL," "we," "us" and "our" or similar terms are to GAMCO Investors, Inc., its predecessors and its subsidiaries.

	The unaudited interim condensed consolidated financial statements of GAMCO included herein have been prepared in conformity with generally accepted accounting principles ("GAAP") in the United States for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all the information and footnotes required by U.S. GAAP in the United States for complete financial statements. In the opinion of management, the unaudited interim condensed consolidated financial statements reflect all adjustments, which are of a normal recurring nature, necessary for a fair presentation of financial position, results of operations and cash flows of GAMCO for the interim periods presented and are not necessarily indicative of a full year's results.

	The condensed consolidated financial statements include the accounts of GAMCO and its subsidiaries. Intercompany accounts and transactions are eliminated.

	These condensed consolidated financial statements should be read in conjunction with our audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2013 from which the accompanying condensed consolidated financial statements were derived.

	Use of Estimates

	The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported on the condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates.

	Recent Accounting Developments

	In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, "Revenue from Contracts with Customers," which supersedes the revenue recognition requirements in the Accounting Standards Codification ("Codification") Topic 605, Revenue Recognition, and most industry-specific guidance throughout the Industry Topics of the Codification. The core principle of the new ASU No. 2014-09 is for companies to recognize revenue from the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. The new standard provides a five-step approach to be applied to all contracts with customers and also requires expanded disclosures about revenue recognition. The ASU is effective for annual reporting periods beginning after December 15, 2016, including interim periods and is to be retrospectively applied. Early adoption is not permitted. The Company is currently evaluating this guidance and the impact it will have on its condensed consolidated financial statements.

	In June 2014, the FASB issued an accounting update clarifying that entities should treat performance targets that could be met after the requisite service period of a share-based payment award as performance conditions that affect vesting. Therefore, an entity would not record compensation expense (measured as of the grant date) for an award where transfer to the employee is contingent upon satisfaction of the performance target until it becomes probable that the performance target will be met. The guidance is effective for the Company beginning January 1, 2016. Early adoption is permitted. This guidance is not expected to have a material impact on the Company's condensed consolidated financial statements.

Investment_in_Securities

Investment in Securities	9 Months Ended
Investment in Securities	Sep. 30, 2014
Investment in Securities [Abstract]	'
Investment in Securities	'
	B. Investment in Securities

	Investments in securities at September 30, 2014, December 31, 2013 and September 30, 2013 consisted of the following:

			30-Sep-14								31-Dec-13						30-Sep-13
			Cost				Fair Value				Cost			Fair Value			Cost			Fair Value
			(In thousands)
	Trading securities:
	Government obligations		$	20,995			$	20,999			$	37,986		$	37,994		$	20,993		$	21,000
	Common stocks			167,714				190,939				96,225			124,634			143,731			166,443
	Mutual funds			2,416				3,373				21,074			23,285			11,073			12,010
	Other investments			753				1,550				287			582			406			419
	Total trading securities			191,878				216,861				155,572			186,495			176,203			199,872

	Available for sale securities:
	Common stocks			14,228				36,380				13,389			43,046			16,372			36,297
	Mutual funds			681				1,389				843			1,687			843			1,575
	Total available for sale securities			14,909				37,769				14,232			44,733			17,215			37,872

	Total investments in securities		$	206,787			$	254,630			$	169,804		$	231,228		$	193,418		$	237,744

	Securities sold, not yet purchased at September 30, 2014, December 31, 2013 and September 30, 2013 consisted of the following:

			30-Sep-14								31-Dec-13						30-Sep-13
			Proceeds				Fair Value				Proceeds			Fair Value			Proceeds			Fair Value
	Trading securities:		(In thousands)
	Common stocks		$	11,699			$	13,514			$	5,319		$	6,023		$	6,411		$	7,003
	Other investments			71				666				-			155			526			722
	Total securities sold, not yet purchased		$	11,770			$	14,180			$	5,319		$	6,178		$	6,937		$	7,725

	Investments in sponsored registered investment companies at September 30, 2014, December 31,2013 and September 30, 2013 consisted of the following:

			30-Sep-14								31-Dec-13						30-Sep-13
			Cost				Fair Value				Cost			Fair Value			Cost			Fair Value
			(In thousands)
	Trading securities:
	Mutual funds		$	1			$	1			$	19		$	10		$	19		$	12
	Total trading securities			1				1				19			10			19			12

	Available for sale securities:
	Closed-end funds			21,819				36,142				23,100			40,624			23,850			40,272
	Mutual funds			1,922				3,377				1,951			3,408			2,031			3,404
	Total available for sale securities			23,741				39,519				25,051			44,032			25,881			43,676

	Total investments in sponsored
	registered investment companies		$	23,742			$	39,520			$	25,070		$	44,042		$	25,900		$	43,688

	Management determines the appropriate classification of debt and equity securities at the time of purchase and reevaluates such designation as of the date of each statement of financial condition. Investments in United States Treasury Bills and Notes with maturities of greater than three months at the time of purchase are classified as investments in securities, and those with maturities of three months or less at the time of purchase are classified as cash equivalents. The portion of investments in securities held for resale in anticipation of short-term market movements are classified as trading securities. Trading securities are stated at fair value, with any unrealized gains or losses reported in current period earnings. Available for sale ("AFS") investments are stated at fair value, with any unrealized gains or losses, net of taxes, reported as a component of equity except for losses deemed to be other than temporary ("OTT") which are recorded as realized losses in the condensed consolidated statements of income.

	The following table identifies all reclassifications out of accumulated other comprehensive income ("AOCI") into income for the three and nine months ended September 30, 2014 and 2013 (in thousands):

	Amount								Affected Line Items	Reason for
	Reclassified								in the Statements	Reclassification
	from AOCI								Of Income	from AOCI
	Three months ended September 30,
	2014					2013
		$	348			$	5,745		Net gain/(loss) from investments	Realized gain on sale of AFS securities
			-				3,112		Other operating expenses/net gain from investments	Realized gain on donation of AFS securities
			348				8,857		Income before income taxes
			(129	)			(3,277	)	Income tax provision
		$	219			$	5,580		Net income

	Amount								Affected Line Items	Reason for
Reclassified								in the Statements	Reclassification
from AOCI								Of Income	from AOCI
Nine months ended September 30,
		2014				2013
	$	3,511			$	16,191		Net gain/(loss) from investments	Realized gain on sale of AFS securities
		3,639				3,443		Other operating expenses/net gain from investments	Realized gain on donation of AFS securities
		(69	)			(14	)	Net gain/(loss) from investments	OTT impairment of AFS securities
		7,081				19,620		Income before income taxes
		(2,620	)			(7,259	)	Income tax provision
	$	4,461			$	12,361		Net income

The Company recognizes all derivatives as either assets or liabilities measured at fair value and includes them in either investments in securities or securities sold, not yet purchased on the condensed consolidated statements of financial condition. From time to time, the Company and/or the partnerships and offshore funds that the Company consolidates will enter into hedging transactions to manage their exposure to foreign currencies and equity prices related to their proprietary investments. For the three months ended September 30, 2014 and 2013, the Company had transactions in equity derivatives which resulted in net gains of $661,000 and $191,000, respectively. For the nine months ended September 30, 2014 and 2013, the Company had transactions in equity derivatives which resulted in net gains of $591,000 and $471,000, respectively. At September 30, 2014, December 31, 2013 and September 30, 2013, we held derivative contracts on 2.3 million equity shares, 1.3 million equity shares and 1.6 million equity shares, respectively, and the fair value was $134,000, $120,000 and ($143,000), respectively; these are included in investments in securities in the condensed consolidated statements of financial condition. These transactions are not designated as hedges for accounting purposes, and therefore changes in fair values of these derivatives are included in net gain/(loss) from investments in the condensed consolidated statements of income.


The Company is a party to enforceable master netting arrangements for swaps entered into as part of the investment strategy of the Company's proprietary portfolio. They are typically not used as hedging instruments. These swaps, while settled on a net basis with the counterparties, major U.S. financial institutions, are shown gross in assets and liabilities on the condensed consolidated statements of financial condition. The swaps have a firm contract end date and are closed out and settled when each contract expires.


													Gross Amounts Not Offset in the
													Statements of Financial Condition
		Gross				Gross Amounts				Net Amounts of
		Amounts of				Offset in the				Assets Presented
		Recognized				Statements of				in the Statements of			Financial			Cash Collateral
		Assets				Financial Condition				Financial Condition			Instruments			Received			Net Amount
Swaps:		(in thousands)
30-Sep-14		$	800			$	-			$	800		$	(657	)	$	-		$	143
31-Dec-13			275				-				275			(155	)		-			120
30-Sep-13		$	101			$	-			$	101		$	(101	)	$	-		$	-

													Gross Amounts Not Offset in the
													Statements of Financial Condition
		Gross				Gross Amounts				Net Amounts of
		Amounts of				Offset in the				Liabilities Presented
		Recognized				Statements of				in the Statements of			Financial			Cash Collateral
		Liabilities				Financial Condition				Financial Condition			Instruments			Pledged			Net Amount
Swaps:		(in thousands)
30-Sep-14		$	657			$	-			$	657		$	(657	)	$	-		$	-
31-Dec-13			155				-				155			(155	)		-			-
30-Sep-13		$	135			$	-			$	135		$	(101	)	$	-		$	34



The following is a summary of the cost, gross unrealized gains, gross unrealized losses and fair value of available for sale investments as of September 30, 2014, December 31, 2013 and September 30, 2013:

		30-Sep-14
						Gross				Gross
						Unrealized				Unrealized
		Cost				Gains				Losses			Fair Value
		(In thousands)
Common stocks		$	14,228			$	22,152			$	-		$	36,380
Closed-end Funds			21,819				14,325				(2	)		36,142
Mutual funds			2,603				2,163				-			4,766
Total available for sale securities		$	38,650			$	38,640			$	(2	)	$	77,288

		31-Dec-13
						Gross				Gross
						Unrealized				Unrealized
		Cost				Gains				Losses			Fair Value
		(In thousands)
Common stocks		$	13,389			$	29,657			$	-		$	43,046
Closed-end Funds			23,100				17,654				(130	)		40,624
Mutual funds			2,794				2,325				(24	)		5,095
Total available for sale securities		$	39,283			$	49,636			$	(154	)	$	88,765

		30-Sep-13
						Gross				Gross
						Unrealized				Unrealized
		Cost				Gains				Losses			Fair Value
		(In thousands)
Common stocks		$	16,372			$	19,925			$	-		$	36,297
Closed-end Funds			23,850				16,545				(123	)		40,272
Mutual funds			2,874				2,141				(36	)		4,979
Total available for sale securities		$	43,096			$	38,611			$	(159	)	$	81,548

Unrealized changes in fair value, net of taxes, for the three months ended September 30, 2014 and September 30, 2013 of $2.4 million in losses and $2.2 million in losses, respectively, have been included in other comprehensive income, a component of equity, at September 30, 2014 and September 30, 2013. Return of capital on available for sale securities was $0.3 million and $0.5 million for the three months ended September 30, 2014 and September 30, 2013, respectively. Proceeds from sales of investments available for sale were approximately $1.5 million and $10.4 million for the three months ended September 30, 2014 and September 30, 2013, respectively. For the three months ended September 30, 2014 and September 30, 2013, gross gains on the sale of investments available for sale amounted to $0.3 million and $5.7 million, respectively, and were reclassified from other comprehensive income into net gain from investments in the condensed consolidated statements of income. There were no losses on the sale of investments available for sale for the three months ended September 30, 2014 or September 30, 2013. Unrealized changes in fair value, net of taxes, for the nine months ended September 30, 2014 and September 30, 2013 of $6.8 million in losses and $3.0 million in losses, respectively, have been included in other comprehensive income, a component of equity, at September 30, 2014 and September 30, 2013. Return of capital on available for sale securities was $0.8 million and $1.1 million for the nine months ended September 30, 2014 and September 30, 2013, respectively. Proceeds from sales of investments available for sale were approximately $8.0 million and $32.4 million for the nine months ended September 30, 2014 and September 30, 2013, respectively. For the nine months ended September 30, 2014 and September 30, 2013, gross gains on the sale of investments available for sale amounted to $3.5 million and $16.2 million, respectively, and were reclassified from other comprehensive income into net gain from investments in the condensed consolidated statements of income. There were no losses on the sale of investments available for sale for the nine months ended September 30, 2014 or September 30, 2013.The basis on which the cost of a security sold is determined using specific identification.

Investments classified as available for sale that are in an unrealized loss position for which other-than-temporary impairment has not been recognized consisted of the following:

		30-Sep-14											31-Dec-13									30-Sep-13
						Unrealized										Unrealized								Unrealized
		Cost				Losses				Fair Value			Cost			Losses			Fair Value			Cost		Losses			Fair Value
(in thousands)
Cosed-end funds		$	79			$	(2	)		$	77		$	912		$	(130	)	$	782		$	941	$	(123	)	$	818
Mutual Funds			-				-				-			303			(24	)		279			365		(36	)		329
Total		$	79			$	(2	)		$	77		$	1,215		$	(154	)	$	1,061		$	1,306	$	(159	)	$	1,147

At September 30, 2014, there was one holding in a loss position which was not deemed to be other-than-temporarily impaired due to the length of time that it had been in a loss position and because it passed scrutiny in our evaluation of issuer-specific and industry-specific considerations. In this specific instance, the investment at September 30, 2014 was a closed-end fund with diversified holdings across multiple companies and across multiple industries. The one holding was impaired for one month at September 30, 2014. The value of this holding at September 30, 2014 was $0.1 million.

At December 31, 2013, there were four holdings in loss positions which were not deemed to be other-than-temporarily impaired due to the length of time that they had been in a loss position and because they passed scrutiny in our evaluation of issuer-specific and industry-specific considerations. In these specific instances, the investments at December 31, 2013 were open-end funds and closed-end funds with diversified holdings across multiple companies and across multiple industries. One holding was impaired for one month, one for two months, one for four months and one for seven months at December 31, 2013. The value of these holdings at December 31, 2013 was $1.1 million.

At September 30, 2013, there were four holdings in loss positions which were not deemed to be other-than-temporarily impaired due to the length of time that they had been in a loss position and because they passed scrutiny in our evaluation of issuer-specific and industry-specific considerations. In these specific instances, the investments at September 30, 2013 were open- and closed-end funds with diversified holdings across multiple companies and across multiple industries. All holdings were impaired for four months at September 30, 2013. The value of these holdings at September 30, 2013 was $1.1 million.

There were no losses on AFS securities for the three months ended September 30, 2014 or September 30, 2013. For the nine months ended September 30, 2014 and September 30, 2013, there were $69,000 and $14,000 of losses, respectively, on available for sale securities deemed to be other than temporary and a loss has been recorded in net gain from investments.

Fair_Value

Fair Value	9 Months Ended
Fair Value	Sep. 30, 2014
Fair Value [Abstract]	'
Fair Value	'
	C. Fair Value

	The following tables present information about the Company's assets and liabilities by major categories measured at fair value on a recurring basis as of September 30, 2014, December 31, 2013 and September 30, 2013 and indicates the fair value hierarchy of the valuation techniques utilized by the Company to determine such fair value:

	Assets and Liabilities Measured at Fair Value on a Recurring Basis as of September 30, 2014 (in thousands)

			Quoted Prices in Active			Significant Other			Significant			Balance as of
			Markets for Identical			Observable			Unobservable			September 30,
	Assets		Assets (Level 1)			Inputs (Level 2)			Inputs (Level 3)			2014
	Cash equivalents		$	358,210		$	-		$	-		$	358,210
	Investments in partnerships			-			24,094			-			24,094
	Investments in securities:
	AFS - Common stocks			36,380			-			-			36,380
	AFS - Mutual funds			1,389			-			-			1,389
	Trading - Gov't obligations			20,999			-			-			20,999
	Trading - Common stocks			190,215			-			724			190,939
	Trading - Mutual funds			3,373			-			-			3,373
	Trading - Other			453			803			294			1,550
	Total investments in securities			252,809			803			1,018			254,630
	Investments in sponsored registered investment companies:
	AFS - Closed-end Funds			36,142			-			-			36,142
	AFS - Mutual Funds			3,377			-			-			3,377
	Trading - Mutual funds			1			-			-			1
	Total investments in sponsored
	registered investment companies			39,520			-			-			39,520
	Total investments			292,329			24,897			1,018			318,244
	Total assets at fair value		$	650,539		$	24,897		$	1,018		$	676,454
	Liabilities
	Trading - Common stocks		$	13,514		$	-		$	-		$	13,514
	Trading - Other			-			666			-			666
	Securities sold, not yet purchased		$	13,514		$	666		$	-		$	14,180

	Assets and Liabilities Measured at Fair Value on a Recurring Basis as of December 31, 2013 (in thousands)

			Quoted Prices in Active			Significant Other			Significant			Balance as of
			Markets for Identical			Observable			Unobservable			December 31,
	Assets		Assets (Level 1)			Inputs (Level 2)			Inputs (Level 3)			2013
	Cash equivalents		$	209,913		$	-		$	-		$	209,913
	Investments in partnerships			-			25,253			-			25,253
	Investments in securities:
	AFS - Common stocks			43,046			-			-			43,046
	AFS - Mutual funds			1,687			-			-			1,687
	Trading - Gov't obligations			37,994			-			-			37,994
	Trading - Common stocks			123,927			7			700			124,634
	Trading - Mutual funds			23,285			-			-			23,285
	Trading - Other			23			275			284			582
	Total investments in securities			229,962			282			984			231,228
	Investments in sponsored registered investment companies:
	AFS - Closed-end Funds			40,624			-			-			40,624
	AFS - Mutual Funds			3,408			-			-			3,408
	Trading - Mutual funds			10			-			-			10
	Total investments in sponsored
	registered investment companies			44,042			-			-			44,042
	Total investments			274,004			25,535			984			300,523
	Total assets at fair value		$	483,917		$	25,535		$	984		$	510,436
	Liabilities
	Trading - Common stocks		$	6,023		$	-		$	-		$	6,023
	Trading - Other			-			155			-			155
	Securities sold, not yet purchased		$	6,023		$	155		$	-		$	6,178

	Assets and Liabilities Measured at Fair Value on a Recurring Basis as of September 30, 2013 (in thousands)

			Quoted Prices in Active			Significant Other			Significant			Balance as of
		Markets for Identical			Observable			Unobservable			September 30,
Assets		Assets (Level 1)			Inputs (Level 2)			Inputs (Level 3)			2013
Cash equivalents		$	244,144		$	-		$	-		$	244,144
Investments in partnerships			-			23,146			-			23,146
Investments in securities:
AFS - Common stocks			36,297			-			-			36,297
AFS - Mutual funds			1,575			-			-			1,575
Trading - Gov't obligations			21,000			-			-			21,000
Trading - Common stocks			165,776			-			667			166,443
Trading - Mutual funds			12,010			-			-			12,010
Trading - Other			32			104			283			419
Total investments in securities			236,690			104			950			237,744
Investments in sponsored registered investment companies:
AFS - Closed-end Funds			40,272			-			-			40,272
AFS - Mutual Funds			3,404			-			-			3,404
Trading - Mutual funds			12			-			-			12
Total investments in sponsored
registered investment companies			43,688			-			-			43,688
Total investments			280,378			23,250			950			304,578
Total assets at fair value		$	524,522		$	23,250		$	950		$	548,722
Liabilities
Trading - Common stocks		$	7,003		$	-		$	-		$	7,003
Trading - Other			-			722			-			722
Securities sold, not yet purchased		$	7,003		$	722		$	-		$	7,725

The following tables present additional information about assets by major categories measured at fair value on a recurring basis and for which the Company has utilized Level 3 inputs to determine fair value.

Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Three Months Ended September 30, 2014 (in thousands)

											Total
											Unrealized
											Gains or			Total
					Total Realized and						(Losses)			Realized
		June			Unrealized Gains or						Included in			and								Transfers
		30, 2014			(Losses) in Income						Other			Unrealized								In and/or
		Beginning						AFS			Comprehensive			Gains or								(Out) of		Ending
Asset		Balance			Trading			Investments			Income			(Losses)			Purchases		Sales			Level 3		Balance
Financial
instruments owned:

Trading - Common stocks		$	716		$	8		$	-		$	-		$	8		$	-	$	-		$	-	$	724
Trading - Other			294			-			-			-			-			-		-			-		294
Total		$	1,010		$	8		$	-		$	-		$	8			-	$	-		$	-	$	1,018

There were no transfers between any Levels during the three months ended September 30, 2014.

Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Three Months Ended September 30, 2013 (in thousands)

											Total
											Unrealized
											Gains or			Total
					Total Realized and						(Losses)			Realized
		June			Unrealized Gains or						Included in			and								Transfers
		30, 2013			(Losses) in Income						Other			Unrealized								In and/or
		Beginning						AFS			Comprehensive			Gains or								(Out) of		Ending
Asset		Balance			Trading			Investments			Income			(Losses)			Purchases		Sales			Level 3		Balance
Financial
instruments owned:
Trading - Common stocks		$	669		$	(2	)	$	-		$	-		$	(2	)	$	-	$	-		$	-	$	667
Trading - Other			284			(1	)		-			-			(1	)		-		-			-		283
Total		$	953		$	(3	)	$	-		$	-		$	(3	)	$	-	$	-		$	-	$	950

There were no transfers between any Levels during the three months ended September 30, 2013.


Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Nine Months Ended September 30, 2014 (in thousands)

											Total
											Unrealized
											Gains or			Total
					Total Realized and						(Losses)			Realized
		December			Unrealized Gains or						Included in			and								Transfers
		31, 2013			(Losses) in Income						Other			Unrealized								In and/or
		Beginning						AFS			Comprehensive			Gains or								(Out) of		Ending
Asset		Balance			Trading			Investments			Income			(Losses)			Purchases		Sales			Level 3		Balance
Financial
instruments owned:

Trading - Common stocks		$	700		$	24		$	-		$	-		$	24		$	-	$	-		$	-	$	724
Trading - Other			284			-			-			-			-			10		-			-		294
Total		$	984		$	24		$	-		$	-		$	24			10	$	-		$	-	$	1,018

There were no transfers between any Levels during the nine months ended September 30, 2014.

Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Nine Months Ended September 30, 2013 (in thousands)

											Total
											Unrealized
											Gains or			Total
					Total Realized and						(Losses)			Realized
		December			Unrealized Gains or						Included in			and								Transfers
		31, 2012			(Losses) in Income						Other			Unrealized								In and/or
		Beginning						AFS			Comprehensive			Gains or								(Out) of		Ending
Asset		Balance			Trading			Investments			Income			(Losses)			Purchases		Sales			Level 3		Balance
Financial
instruments owned:
Trading - Common stocks		$	675		$	(8	)	$	-		$	-		$	(8	)	$	-	$	-		$	-	$	667
Trading - Other			362			(3	)		-			-			(3	)		3		(79	)		-		283
Total		$	1,037		$	(11	)	$	-		$	-		$	(11	)	$	3	$	(79	)	$	-	$	950

There were no transfers between any Levels during the nine months ended September 30, 2013.

Investments_in_Partnerships_Of

Investments in Partnerships, Offshore Funds and Variable Interest Entities	9 Months Ended
	Sep. 30, 2014
Investments in Partnerships, Offshore Funds and Variable Interests [Abstract]	'
Investments in Partnerships, Offshore Funds and Variable Interests	'
	D. Investments in Partnerships, Offshore Funds and Variable Interest Entities ("VIEs")

	The Company is general partner or co-general partner of various affiliated entities in which the Company has investments totaling $93.2 million, $82.0 million and $84.3 million at September 30, 2014, December 31, 2013 and September 30, 2013, respectively, and whose underlying assets consist primarily of marketable securities (the "affiliated entities"). We also have investments in unaffiliated entities of $14.2 million, $14.0 million and $13.5 million at September 30, 2014, December 31, 2013 and September 30, 2013, respectively (the "unaffiliated entities"). On a quarterly basis we evaluate each entity for the appropriate accounting treatment and disclosure. Certain of the affiliated entities, and none of the unaffiliated entities, are consolidated.

	For those entities where consolidation is not deemed to be appropriate, we report them in our condensed consolidated statement of financial condition under the caption "Investments in partnerships". This caption includes those investments, in both affiliated and unaffiliated entities, which the Company accounts for under the equity method of accounting, as well as certain investments that the feeder funds hold that are carried at fair value, as described in Note C. The Company reflects the equity in earnings of these equity method investees and the change in fair value of the consolidated feeder funds ("CFFs") under the caption "Net gain/(loss) from investments" on the condensed consolidated statements of income.

	The following table highlights the number of entities, including voting interest entities ("VOEs"), that we consolidate as well as under which accounting guidance they are consolidated, including CFFs, which retain their specialized investment company accounting in consolidation, partnerships and offshore funds.


	Entities consolidated
			CFFs						Partnerships						Offshore Funds				Total
			VIEs			VOEs			VIEs			VOEs			VIEs		VOEs		VIEs		VOEs
	Entities consolidated at December 31, 2012			1			2			-			1			-		1		1		4
	Additional consolidated entities			-			-			-			-			-		-		-		-
	Deconsolidated entities			-			-			-			-			-		-		-		-
	Entities consolidated at September 30, 2013			1			2			-			1			-		1		1		4
	Additional consolidated entities			-			-			-			-			-		-		-		-
	Deconsolidated entities			-			-			-			-			-		-		-		-
	Entities consolidated at December 31, 2013			1			2			-			1			-		1		1		4
	Additional consolidated entities			-			-			-			-			-		-		-		-
	Deconsolidated entities			-			-			-			-			-		-		-		-
	Entities consolidated at September 30, 2014			1			2			-			1			-		1		1		4

	At and for the nine months ended September 30, 2014 and 2013 and at December 31, 2013, the one CFF VIE is consolidated, as the Company has been determined to be the primary beneficiary because it has an equity interest and absorbs the majority of the expected losses and/or expected gains. At and for the nine months ended September 30, 2014 and 2013 and at December 31, 2013, the two CFF VOEs, the one Partnership VOE and the one Offshore Fund VOE are consolidated because the unaffiliated partners or shareholders lack substantive rights, and the Company, as either the general partner or investment manager, is deemed to have control.

	The following table breaks down the investments in partnerships line by accounting method, either fair value or equity method, and investment type (in thousands):

			30-Sep-14
			Investment Type
			Affiliated									Unaffiliated
			Consolidated
	Accounting method		Feeder Funds			Partnerships			Offshore Funds			Partnerships			Offshore Funds		Total

	Fair Value		$	24,094		$	-		$	-		$	-		$	-	$	24,094
	Equity Method			-			34,967			34,185			6,611			7,577		83,340

	Total		$	24,094		$	34,967		$	34,185		$	6,611		$	7,577	$	107,434

			31-Dec-13
			Investment Type
			Affiliated									Unaffiliated
			Consolidated
	Accounting method		Feeder Funds			Partnerships			Offshore Funds			Partnerships			Offshore Funds		Total

	Fair Value		$	25,253		$	-		$	-		$	-		$	-	$	25,253
	Equity Method			-			21,669			35,030			6,509			7,531		70,739

	Total		$	25,253		$	21,669		$	35,030		$	6,509		$	7,531	$	95,992

			30-Sep-13
			Investment Type
			Affiliated									Unaffiliated
			Consolidated
	Accounting method		Feeder Funds			Partnerships			Offshore Funds			Partnerships			Offshore Funds		Total

	Fair Value		$	23,146		$	-		$	-		$	-		$	-	$	23,146
	Equity Method			-			26,717			34,460			6,080			7,349		74,606

	Total		$	23,146		$	26,717		$	34,460		$	6,080		$	7,349	$	97,752

	The following table includes the net impact by line item on the condensed consolidated statements of financial condition for each category of entity consolidated (in thousands):

			30-Sep-14
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
Assets
Cash and cash equivalents		$	358,316		$	7		$	98		$	-		$	358,421
Investments in securities			203,280			-			8,836			42,514			254,630
Investments in sponsored investment companies			39,520			-			-			-			39,520
Investments in partnerships			110,679			4,684			(7,929	)		-			107,434
Receivable from brokers			31,388			-			306			48,191			79,885
Investment advisory fees receivable			31,221			17			(1	)		(82	)		31,155
Other assets			28,528			24			(1,000	)		163			27,715
Total assets		$	802,932		$	4,732		$	310		$	90,786		$	898,760
Liabilities and equity
Securities sold, not yet purchased		$	13,549		$	-		$	-		$	631		$	14,180
Accrued expenses and other liabilities			166,209			71			31			39,009			205,320
Total debt			111,941			-			-			-			111,941
Redeemable noncontrolling interests			-			4,661			279			51,146			56,086
Total equity			511,233			-			-			-			511,233
Total liabilities and equity		$	802,932		$	4,732		$	310		$	90,786		$	898,760

		31-Dec-13
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
Assets
Cash and cash equivalents		$	209,667		$	450		$	334		$	-		$	210,451
Investments in securities			232,211			-			7,464			(8,447	)		231,228
Investments in sponsored investment companies			44,033			-			9			-			44,042
Investments in partnerships			98,494			6,517			(9,019	)		-			95,992
Receivable from brokers			35,151			-			-			14,310			49,461
Investment advisory fees receivable			52,509			(24	)		(14	)		(965	)		51,506
Other assets			27,433			(2,339	)		1,592			119			26,805
Total assets		$	699,498		$	4,604		$	366		$	5,017		$	709,485
Liabilities and equity
Securities sold, not yet purchased		$	6,049		$	-		$	-		$	129		$	6,178
Accrued expenses and other liabilities			121,356			165			29			2,913			124,463
Total debt			111,911			-			-			-			111,911
Redeemable noncontrolling interests			-			4,439			337			1,975			6,751
Total equity			460,182			-			-			-			460,182
Total liabilities and equity		$	699,498		$	4,604		$	366		$	5,017		$	709,485

		30-Sep-13
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
Assets
Cash and cash equivalents		$	243,995		$	1,082		$	334		$	-		$	245,411
Investments in securities			240,113			-			7,400			(9,769	)		237,744
Investments in sponsored investment companies			43,677			-			11			-			43,688
Investments in partnerships			104,010			3,253			(9,511	)		-			97,752
Receivable from brokers			26,981			-			2,115			14,758			43,854
Investment advisory fees receivable			31,241			(8	)		(1	)		(81	)		31,151
Other assets			34,947			-			-			75			35,022
Total assets		$	724,964		$	4,327		$	348		$	4,983		$	734,622
Liabilities and equity
Securities sold, not yet purchased		$	7,577		$	-		$	-		$	148		$	7,725
Accrued expenses and other liabilities			161,394			1,146			32			2,567			165,139
Total debt			117,347			-			-			-			117,347
Redeemable noncontrolling interests			-			3,181			316			2,268			5,765
Total equity			438,646			-			-			-			438,646
Total liabilities and equity		$	724,964		$	4,327		$	348		$	4,983		$	734,622

The following table includes the net impact by line item on the condensed consolidated statements of income for each category of entity consolidated (in thousands):

		Three Months Ended September 30, 2014
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
Total revenues		$	111,073		$	(7	)	$	-		$	(208	)	$	110,858
Total expenses			66,980			20			12			260			67,272
Operating income			44,093			(27	)		(12	)		(468	)		43,586
Total other income/(expense), net			(7,462	)		(186	)		(18	)		(2,323	)		(9,989	)
Income before income taxes			36,631			(213	)		(30	)		(2,791	)		33,597
Income tax provision			13,045			-			-			-			13,045
Net income			23,586			(213	)		(30	)		(2,791	)		20,552
Net loss attributable to noncontrolling interests			(79	)		(213	)		(30	)		(2,791	)		(3,113	)
Net income attributable to GAMCO		$	23,665		$	-		$	-		$	-		$	23,665

		Three Months Ended September 30, 2013
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
Total revenues		$	96,620		$	(8	)	$	(1	)	$	(234	)	$	96,377
Total expenses			63,400			46			11			192			63,649
Operating income			33,220			(54	)		(12	)		(426	)		32,728
Total other income, net			17,404			94			31			462			17,991
Income before income taxes			50,624			40			19			36			50,719
Income tax provision			17,515			-			-			-			17,515
Net income			33,109			40			19			36			33,204
Net income attributable to noncontrolling interests			11			40			19			36			106
Net income attributable to GAMCO		$	33,098		$	-		$	-		$	-		$	33,098


		Nine Months Ended September 30, 2014
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
Total revenues		$	324,287		$	(21	)	$	(2	)	$	(633	)	$	323,631
Total expenses			205,207			34			38			730			206,009
Operating income			119,080			(55	)		(40	)		(1,363	)		117,622
Total other income/(expense), net			6,172			20			19			(1,186	)		5,025
Income before income taxes			125,252			(35	)		(21	)		(2,549	)		122,647
Income tax provision			44,796			-			-			-			44,796
Net income			80,456			(35	)		(21	)		(2,549	)		77,851
Net loss attributable to noncontrolling interests			(113	)		(35	)		(21	)		(2,549	)		(2,718	)
Net income attributable to GAMCO		$	80,569		$	-		$	-		$	-		$	80,569

		Nine Months Ended September 30, 2013
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
Total revenues		$	275,689		$	(20	)	$	(2	)	$	(819	)	$	274,848
Total expenses			178,858			134			36			581			179,609
Operating income			96,831			(154	)		(38	)		(1,400	)		95,239
Total other income, net			33,125			228			79			1,559			34,991
Income before income taxes			129,956			74			41			159			130,230
Income tax provision			46,434			-			-			-			46,434
Net income			83,522			74			41			159			83,796
Net income/(loss) attributable to noncontrolling interests			(14	)		74			41			159			260
Net income attributable to GAMCO		$	83,536		$	-		$	-		$	0		$	83,536


Variable Interest Entities

We sponsor a number of investment vehicles where we are the general partner or investment manager. Certain of these vehicles are VIEs, but we are not the primary beneficiary, in all but one case, because we do not absorb a majority of the entities' expected losses and/or expected returns, and they are, therefore, not consolidated. We consolidate the one VIE where we are the primary beneficiary. The Company has not provided any financial or other support to those VIEs where we are not the primary beneficiary. The total net assets of these non-consolidated VIEs at September 30, 2014, December 31, 2013 and September 30, 2013 were $59.8 million, $72.7 million and $77.7 million, respectively. Our maximum exposure to loss as a result of our involvement with the non-consolidated VIEs is limited to the investment in two VIEs and the deferred carried interest that we have in another. On September 30, 2014, we had an investment in two of the non-consolidated VIE offshore funds of approximately $8.0 million. On December 31, 2013 and September 30, 2013, we had an investment in one of the non-consolidated VIE offshore funds of approximately $10.0 million and $9.9 million, respectively, which was included in investments in partnerships on the condensed consolidated statements of financial condition. On September 30, 2014, December 31, 2013 and September 30, 2013, we had a deferred carried interest in one of the non-consolidated VIE offshore funds of $44,000, $45,000 and $45,000, respectively, which was included in investments in partnerships on the condensed consolidated statements of financial condition. Additionally, as the general partner or investment manager to these VIEs the Company earns fees in relation to these roles, which given a decline in AUMs of the VIEs would result in lower fee revenues earned by the Company which would be reflected on the condensed consolidated statement of income, condensed consolidated statement of financial condition and condensed consolidated statement of cash flows.

The assets of these VIEs may only be used to satisfy obligations of the VIEs. The following table presents the balances related to the VIE that is consolidated and is included on the condensed consolidated statements of financial condition as well as GAMCO's net interest in this VIE. Only one VIE was consolidated at September 30, 2014, December 31, 2013 and September 30, 2013:

		September 30,			December 31,			September 30,
		2014			2013			2013
(In thousands)
Cash and cash equivalents		$	1		$	-		$	1,082
Investments in partnerships			13,618			15,540			13,782
Accrued expenses and other liabilities			(15	)		(2,022	)		(1,088	)
Redeemable noncontrolling interests			(962	)		(1,120	)		-
GAMCO's net interests in consolidated VIE		$	12,642		$	12,398		$	13,776

Income_Taxes

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2014
Income Taxes [Abstract]	'
Income Taxes	'
	E. Income Taxes

	The effective tax rate ("ETR) for the three months ended September 30,2014 was 38.8% compared to 34.5% for the prior year three month period. Excluding net income (loss) attributable to noncontrolling interests the ETR was 35.5% and 34.6% for the third quarters of 2014 and 2013, respectively. The ETR for the nine months ended September 30, 2014 was 36.5% compared to 35.7% for the prior year nine month period. Excluding net income (loss) attributable to noncontrolling interests the ETR was 35.7% for both the nine months ended September 30, 2014 and 2013.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
Earnings Per Share	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	F. Earnings Per Share

	The computations of basic and diluted net income per share are as follows:

		Three Months Ended September 30,				Nine Months Ended September 30,
	(in thousands, except per share amounts)	2014		2013		2014		2013
	Basic:
	Net income attributable to GAMCO Investors, Inc.'s shareholders	$	23,665	$	33,098	$	80,569	$	83,536
	Weighted average shares outstanding		25,296		25,625		25,385		25,682
	Basic net income attributable to GAMCO Investors, Inc.'s
	shareholders per share	$	0.94	$	1.29	$	3.17	$	3.25

	Diluted:
	Net income attributable to GAMCO Investors, Inc.'s shareholders	$	23,665	$	33,098	$	80,569	$	83,536

	Weighted average share outstanding		25,296		25,625		25,385		25,682
	Dilutive stock options and restricted stock awards		221		75		210		35
	Total		25,517		25,700		25,595		25,717
	Diluted net income attributable to GAMCO Investors, Inc.'s
	shareholders per share	$	0.93	$	1.29	$	3.15	$	3.25

Debt

Debt	9 Months Ended
	Sep. 30, 2014
Debt [Abstract]	'
Debt	'
	G. Debt

	Debt consists of the following:

		30-Sep-14				31-Dec-13				30-Sep-13
		Carrying		Fair Value		Carrying		Fair Value		Carrying		Fair Value
		Value		Level 2		Value		Level 2		Value		Level 2
	(In thousands)
	5.875% Senior notes	$	100,000	$	108,200	$	100,000	$	108,500	$	100,000	$	108,000
	0% Subordinated debentures		11,941		12,775		11,911		13,819		17,347		19,349
	Total	$	111,941	$	120,975	$	111,911	$	122,319	$	117,347	$	127,349

	5.5% Senior notes

	On May 15, 2003, the Company issued 10-year, $100 million senior notes. The senior notes, which matured and were fully repaid on May 15, 2013, paid interest semi-annually at 5.5%.

	5.875% Senior notes

	On May 31, 2011, the Company issued 10-year, $100 million senior notes. The notes mature on June 1, 2021 and bear interest at 5.875% per annum, payable semi-annually on June 1 and December 1 of each year and commenced on December 1, 2011. Upon the occurrence of a change of control triggering event, as defined in the indenture, the Company would be required to offer to repurchase the notes at 101% of their principal amount.

	Zero coupon Subordinated debentures due December 31, 2015

	On December 31, 2010, the Company issued $86.4 million in par value of five year zero coupon subordinated debentures due December 31, 2015 ("Debentures") to its shareholders of record on December 15, 2010 through the declaration of a special dividend of $3.20 per share. The Debentures have a par value of $100 and are callable at the option of the Company, in whole or in part, at any time or from time to time, at a redemption price equal to 100% of the principal amount of the Debentures to be redeemed. During the three month period ended September 30, 2014 the Company repurchased 1,032 Debentures having a face value of $0.1 million. The redemptions were accounted for as extinguishments of debt and resulted in a loss of $10,000, which was included in net gain from investments on the condensed consolidated statements of income. There were no repurchases during the three month period ended September 30, 2013. During the nine month periods ended September 30, 2014 and September 30, 2013, the Company repurchased 7,165 Debentures and 11,974 Debentures, respectively, having a face value of $0.7 million and $1.2 million, respectively. The redemptions were accounted for as extinguishments of debt and resulted in losses of $84,000 and $0.1 million, respectively. The debt is being accreted to its face value using the effective rate on the date of issuance of 7.45%. At September 30, 2014, December 31, 2013 and September 30, 2013, the debt was recorded at its accreted value of $11.9 million, $11.9 million and $17.3 million, respectively.

	The fair value of the Company's debt, which is a Level 2 valuation, is estimated based on either quoted market prices for the same or similar issues or on the current rates offered to the Company for debt of the same remaining maturities or using market standard models. Inputs in these standard models include credit rating, maturity and interest rate.

	On May 30, 2012, the Securities and Exchange Commission ("SEC") declared effective the "shelf" registration statement filed by the Company. The "shelf" provides the Company with the flexibility of issuing any combination of senior and subordinated debt securities, convertible securities and common and preferred securities up to a total amount of $500 million and replaced the existing shelf registration which expired in July 2012. As of September 30, 2014, $400 million is available on the shelf.

	H. Stockholders' Equity

	Shares outstanding were 25.9 million, 26.1 million and 26.0 million on September 30, 2014, December 31, 2013 and September 30, 2013, respectively.

Stockholders_Equity

Stockholders' Equity	9 Months Ended
Stockholders' Equity	Sep. 30, 2014
Stockholders' Equity [Abstract]	'
Stockholders' Equity	'
	Dividends

	Payment Date		Record Date	Amount

	Three months ended March 31, 2014	25-Mar-14	11-Mar-14	$	0.06
	Three months ended June 30, 2014	24-Jun-14	10-Jun-14	$	0.06
	Three months ended September 30, 2014	30-Sep-14	16-Sep-14		0.06
	Nine months ended September 30, 2014			$	0.18

	Three months ended March 31, 2013	26-Mar-13	12-Mar-13	$	0.05
	Three months ended June 30, 2013	25-Jun-13	11-Jun-13	$	0.05
	Three months ended September 30, 2013	24-Sep-13	10-Sep-13	$	0.06
	Nine months ended September 30, 2013			$	0.16

	Voting Rights

	The holders of Class A Common stock ("Class A Stock") and Class B Common stock ("Class B Stock") have identical rights except that (i) holders of Class A Stock are entitled to one vote per share, while holders of Class B Stock are entitled to ten votes per share on all matters to be voted on by shareholders in general, and (ii) holders of Class A Stock are not eligible to vote on matters relating exclusively to Class B Stock and vice versa.

	Stock Award and Incentive Plan

	The Company maintains two plans approved by the shareholders, the 1999 Plan and the 2002 Plan, which are designed to provide incentives which will attract and retain individuals key to the success of GAMCO through direct or indirect ownership of our common stock. Benefits under both the 1999 and 2002 Plans may be granted in any one or a combination of stock options, stock appreciation rights, restricted stock, restricted stock units, stock awards, dividend equivalents and other stock or cash based awards. A maximum of 1.5 million shares of Class A Stock were originally reserved for issuance under each of the 1999 and 2002 Plans by a committee of the Board of Directors responsible for administering the Plans ("Compensation Committee"). In November 2013, the shareholders approved an amendment to the Company's 2002 Stock Award and Incentive Plan to increase the number of shares of Class A Stock authorized and reserved for issuance by 2 million. Under the Plans, the committee may grant restricted stock awards ("RSA") and either incentive or nonqualified stock options with a term not to exceed ten years from the grant date and at an exercise price that the Compensation committee may determine. Options granted under the plans typically vest 75% after three years and 100% after four years from the date of grant and expire after ten years. RSA shares granted under the Plans typically vest 30% after three years and 100% after five years.

	On September 15, 2014 and January 9, 2014, the Company approved the granting of 83,500 RSA shares and 2,100 RSA shares, respectively, at a grant date fair value of 73.41 per share and 81.99 per share, respectively. As of September 30, 2014, December 31, 2013 and September 30, 2013, there were 639,750 RSA shares, 566,950 RSA shares and 427,700 RSA shares outstanding, respectively, that were previously issued at an average weighted grant price of $65.12, $63.93 and $57.86, respectively. All grants of the RSA shares were recommended by the Company's Chairman, who did not receive a RSA, and approved by the Compensation Committee. This expense, net of estimated forfeitures, is recognized over the vesting period for these awards which is 30% over three years from the date of grant and 70% over five years from the date of grant, except for the August 2013 and September 2014 grants which are 30% over three years from the date of grant and 10% each year over years four through ten from the date of grant. During the vesting period, dividends to RSA holders are held for them until the RSA vesting dates and are forfeited if the grantee is no longer employed by the Company on the vesting dates. Dividends declared on these RSAs, less estimated forfeitures, are charged to retained earnings on the declaration date.

	For the three months ended September 30, 2014 and September 30, 2013, we recognized stock-based compensation expense of $1.8 million and $0.7 million, respectively. For the nine months ended September 30, 2014 and September 30, 2013, we recognized stock-based compensation expense of $5.2 million and $0.8 million, respectively. Actual and projected stock-based compensation expense for RSA shares and options for the years ended December 31, 2014 through December 31, 2023 (based on awards currently issued or granted) is as follows ($ in thousands):

				2013		2014		2015		2016		2017		2018
		Q1		$	15	$	1,700	$	1,962	$	1,961	$	1,171	$	908
		Q2			15		1,697		1,961		1,961		1,171		908
		Q3			741		1,785		1,961		1,607		1,040		828
		Q4			1,301		1,965		1,961		1,346		910		659
	Full Year			$	2,072	$	7,147	$	7,845	$	6,875	$	4,292	$	3,303

					2019		2020		2021		2022		2023		2024
		Q1		$	429	$	319	$	227	$	146	$	76	$	12
		Q2			429		319		227		146		76		12
		Q3			364		264		179		104		38		8
		Q4			319		227		146		76		12		-
	Full Year			$	1,541	$	1,129	$	779	$	472	$	202	$	32


	The total compensation cost related to non-vested options not yet recognized is approximately $28.4 million as of September 30, 2014. There were no options exercised for the three months ended September 30, 2014 or September 30, 2013. For the nine months ended September 30, 2014 and 2013, proceeds from the exercise of 40,000 stock options and 2,623 stock options, respectively, were $1.6 million and $76,000, respectively, resulting in a tax benefit to GAMCO of $0.3 million and $16,000, respectively.

	Stock Repurchase Program

	In March 1999, GAMCO's Board of Directors established the Stock Repurchase Program to grant management the authority to repurchase shares of our Class A Common Stock. On February 5, 2013, our Board of Directors authorized an incremental 500,000 shares to be added to the current buyback authorization. For the three months ended September 30, 2014 and September 30, 2013, the Company repurchased 94,942 shares and 40,857 shares, respectively, at an average price per share of $77.67 and $72.40, respectively. For the nine months ended September 30, 2014 and September 30, 2013, the Company repurchased 319,662 shares and 159,259 shares, respectively, at an average price per share of $78.43 and $57.97, respectively. From the inception of the program through September 30, 2014, 9,031,255 shares have been repurchased at an average price of $43.53 per share. At September 30, 2014, the total shares available under the program to be repurchased in the future were 603,553.

Goodwill_and_Identifiable_Inta

Goodwill and Identifiable Intangible Assets	9 Months Ended
Goodwill and Identifiable Intangible Assets	Sep. 30, 2014
Goodwill and Identifiable Intangible Assets [Abstract]	'
Goodwill and Identifiable Intangible Assets	'
	I. Goodwill and Identifiable Intangible Assets

	At September 30, 2014, $3.5 million of goodwill is reflected within other assets on the condensed consolidated statements of financial condition with $3.3 million related to a 94%-owned subsidiary, Gabelli Securities, Inc. and $0.2 million related to G.distributors, LLC. The Company assesses the recoverability of goodwill at least annually, or more often should events warrant, using a qualitative assessment of whether it is more likely than not that an impairment has occurred to determine if a quantitative analysis is required. There were no indicators of impairment for the three months ended September 30, 2014 or September 30, 2013, and as such there was no impairment analysis performed or charge recorded.

	As a result of becoming the advisor to the Gabelli Enterprise Mergers and Acquisitions Fund and the associated consideration paid, the Company maintains an identifiable intangible asset of $1.9 million within other assets on the condensed consolidated statements of financial condition at September 30, 2014, December 31, 2013 and September 30, 2013. The investment advisory agreement is subject to annual renewal by the fund's Board of Directors, which the Company expects to be renewed, and the Company does not expect to incur additional expense as a result, which is consistent with other investment advisory agreements entered into by the Company. The advisory contract is next up for renewal in February 2015. The Company assesses the recoverability of this intangible asset at least annually, or more often should events warrant. There were no indicators of impairment for the three months ended September 30, 2014 or September 30, 2013, and as such there was no impairment analysis performed or charge recorded.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2014
Commitments and Contingencies [Abstract]	'
Commitments and Contingencies	'
	J. Commitments and Contingencies

	From time to time, the Company may be named in legal actions and proceedings. These actions may seek substantial or indeterminate compensatory as well as punitive damages or injunctive relief. The Company is also subject to governmental or regulatory examinations or investigations. The examinations or investigations could result in adverse judgments, settlements, fines, injunctions, restitutions or other relief. For any such matters, the condensed consolidated financial statements include the necessary provisions for losses that the Company believes are probable and estimable. Furthermore, the Company evaluates whether there exist losses which may be reasonably possible and, if material, makes the necessary disclosures. Such amounts, both those that are probable and those that are reasonably possible, are not considered material to the Company's financial condition, operations or cash flows.

	The Company indemnifies the clearing brokers of G.research, Inc., our broker-dealer subsidiary, for losses they may sustain from the customer accounts that trade on margin introduced by it. At September 30, 2014, the total amount of customer balances subject to indemnification (i.e. unsecured margin debits) was immaterial. The Company also has entered into arrangements with various other third parties many of which provide for indemnification of the third parties against losses, costs, claims and liabilities arising from the performance of obligations under the agreements. The Company has had no claims or payments pursuant to these or prior agreements and believes the likelihood of a claim being made is remote. The Company's estimate of the value of such agreements is de minimis, and therefore an accrual has not been made on the condensed consolidated financial statements.

ShareholderDesignated_Contribu

Shareholder-Designated Contribution Plan	9 Months Ended
Shareholder-Designated Contribution Plan	Sep. 30, 2014
Shareholder-Designated Contribution Plan [Abstract]	'
Shareholder-Designated Contribution Plan	'
	K. Shareholder-Designated Contribution Plan

	During 2013, the Company established a Shareholder Designated Charitable Contribution program. Under the program, each shareholder is eligible to designate a charity to which the Company would make a donation based upon the actual number of shares registered in the shareholder's name. Shares held in nominee or street name were not eligible to participate. The Board of Directors approved two contributions during 2013 of $0.25 per registered share each. During the first nine months of 2013, the Company recorded a charge of $5.3 million, or $0.12 per diluted share, net of management fee and tax benefit, related to the contributions which was included in shareholder-designated contribution in the condensed consolidated statements of income.

	During the fourth quarter of 2013, the Company recorded a charge of $5.3 million, or $0.12 per diluted share, net of management fee and tax benefit, as an estimate of the expected contribution to be made relating to the $0.25 per share contribution approved by the Board in November 2013. Based upon the number of registered shares that participated in the program, the Company recorded an additional charge of $134,000 during the first nine months of 2014.

Subsequent_Events

Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	L. Subsequent Events

	From October 1, 2014 to November 7, 2014, the Company repurchased 59,539 shares at $77.42 per share.

	On November 6, 2014, the Board of Directors declared a special dividend of $0.25 per share and a regular quarterly dividend of $0.07 per share to all of its shareholders, both payable on December 30, 2014 to shareholders of record on December 16, 2014.

	The Board of Directors has authorized management to explore a potential restructure that will enable the Company to further increase its market focus. While this may involve a split-up of certain facets of our business, there are numerous regulatory related and other issues that may preclude pursuit of any alternative. Management does not plan to give periodic updates on the Company’s progress.

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	9 Months Ended
Significant Accounting Policies (Policies)	Sep. 30, 2014
Significant Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation

	Unless we have indicated otherwise, or the context otherwise requires, references in this report to "GAMCO Investors, Inc.," "GAMCO," "the Company," "GBL," "we," "us" and "our" or similar terms are to GAMCO Investors, Inc., its predecessors and its subsidiaries.

	The unaudited interim condensed consolidated financial statements of GAMCO included herein have been prepared in conformity with generally accepted accounting principles ("GAAP") in the United States for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all the information and footnotes required by U.S. GAAP in the United States for complete financial statements. In the opinion of management, the unaudited interim condensed consolidated financial statements reflect all adjustments, which are of a normal recurring nature, necessary for a fair presentation of financial position, results of operations and cash flows of GAMCO for the interim periods presented and are not necessarily indicative of a full year's results.

	The condensed consolidated financial statements include the accounts of GAMCO and its subsidiaries. Intercompany accounts and transactions are eliminated.

	These condensed consolidated financial statements should be read in conjunction with our audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2013 from which the accompanying condensed consolidated financial statements were derived.
Use of Estimates	'
	Use of Estimates

	The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported on the condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates.
Recent Accounting Developments	'
	Recent Accounting Developments

	In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2014-09, "Revenue from Contracts with Customers," which supersedes the revenue recognition requirements in the Accounting Standards Codification ("Codification") Topic 605, Revenue Recognition, and most industry-specific guidance throughout the Industry Topics of the Codification. The core principle of the new ASU No. 2014-09 is for companies to recognize revenue from the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. The new standard provides a five-step approach to be applied to all contracts with customers and also requires expanded disclosures about revenue recognition. The ASU is effective for annual reporting periods beginning after December 15, 2016, including interim periods and is to be retrospectively applied. Early adoption is not permitted. The Company is currently evaluating this guidance and the impact it will have on its condensed consolidated financial statements.

	In June 2014, the FASB issued an accounting update clarifying that entities should treat performance targets that could be met after the requisite service period of a share-based payment award as performance conditions that affect vesting. Therefore, an entity would not record compensation expense (measured as of the grant date) for an award where transfer to the employee is contingent upon satisfaction of the performance target until it becomes probable that the performance target will be met. The guidance is effective for the Company beginning January 1, 2016. Early adoption is permitted. This guidance is not expected to have a material impact on the Company's condensed consolidated financial statements.

Investment_in_Securities_Table

Investment in Securities (Tables)	9 Months Ended
Investment in Securities (Tables)	Sep. 30, 2014
Investment in Securities [Abstract]	'
Investments in securities	'
	Investments in securities at September 30, 2014, December 31, 2013 and September 30, 2013 consisted of the following:

			30-Sep-14							31-Dec-13						30-Sep-13
			Cost			Fair Value				Cost			Fair Value			Cost			Fair Value
			(In thousands)
	Trading securities:
	Government obligations		$	20,995		$	20,999			$	37,986		$	37,994		$	20,993		$	21,000
	Common stocks			167,714			190,939				96,225			124,634			143,731			166,443
	Mutual funds			2,416			3,373				21,074			23,285			11,073			12,010
	Other investments			753			1,550				287			582			406			419
	Total trading securities			191,878			216,861				155,572			186,495			176,203			199,872

	Available for sale securities:
	Common stocks			14,228			36,380				13,389			43,046			16,372			36,297
	Mutual funds			681			1,389				843			1,687			843			1,575
	Total available for sale securities			14,909			37,769				14,232			44,733			17,215			37,872

	Total investments in securities		$	206,787		$	254,630			$	169,804		$	231,228		$	193,418		$	237,744
Securities sold, not yet purchased	'
	Securities sold, not yet purchased at September 30, 2014, December 31, 2013 and September 30, 2013 consisted of the following:

			30-Sep-14							31-Dec-13						30-Sep-13
			Proceeds			Fair Value				Proceeds			Fair Value			Proceeds			Fair Value
	Trading securities:		(In thousands)
	Common stocks		$	11,699		$	13,514			$	5,319		$	6,023		$	6,411		$	7,003
	Other investments			71			666				-			155			526			722
	Total securities sold, not yet purchased		$	11,770		$	14,180			$	5,319		$	6,178		$	6,937		$	7,725
Investments in sponsored registered investment companies	'
	Investments in sponsored registered investment companies at September 30, 2014, December 31,2013 and September 30, 2013 consisted of the following:

			30-Sep-14							31-Dec-13						30-Sep-13
			Cost			Fair Value				Cost			Fair Value			Cost			Fair Value
			(In thousands)
	Trading securities:
	Mutual funds		$	1		$	1			$	19		$	10		$	19		$	12
	Total trading securities			1			1				19			10			19			12

	Available for sale securities:
	Closed-end funds			21,819			36,142				23,100			40,624			23,850			40,272
	Mutual funds			1,922			3,377				1,951			3,408			2,031			3,404
	Total available for sale securities			23,741			39,519				25,051			44,032			25,881			43,676

	Total investments in sponsored
	registered investment companies		$	23,742		$	39,520			$	25,070		$	44,042		$	25,900		$	43,688
Reclassifications out of accumulated other comprehensive income	'
	The following table identifies all reclassifications out of accumulated other comprehensive income ("AOCI") into income for the three and nine months ended September 30, 2014 and 2013 (in thousands):

	Amount							Affected Line Items	Reason for
	Reclassified							in the Statements	Reclassification
	from AOCI							Of Income	from AOCI
	Three months ended September 30,
	2014				2013
		$	348		$	5,745		Net gain/(loss) from investments	Realized gain on sale of AFS securities
			-			3,112		Other operating expenses/net gain from investments	Realized gain on donation of AFS securities
			348			8,857		Income before income taxes
			(129	)		(3,277	)	Income tax provision
		$	219		$	5,580		Net income

	Amount							Affected Line Items	Reason for
	Reclassified							in the Statements	Reclassification
	from AOCI							Of Income	from AOCI
	Nine months ended September 30,
			2014			2013
		$	3,511		$	16,191		Net gain/(loss) from investments	Realized gain on sale of AFS securities
			3,639			3,443		Other operating expenses/net gain from investments	Realized gain on donation of AFS securities
			(69	)		(14	)	Net gain/(loss) from investments	OTT impairment of AFS securities
			7,081			19,620		Income before income taxes
			(2,620	)		(7,259	)	Income tax provision
		$	4,461		$	12,361		Net income
Master netting arrangements for swaps	'
	The Company is a party to enforceable master netting arrangements for swaps entered into as part of the investment strategy of the Company's proprietary portfolio. They are typically not used as hedging instruments. These swaps, while settled on a net basis with the counterparties, major U.S. financial institutions, are shown gross in assets and liabilities on the condensed consolidated statements of financial condition. The swaps have a firm contract end date and are closed out and settled when each contract expires.


													Gross Amounts Not Offset in the
													Statements of Financial Condition
			Gross			Gross Amounts				Net Amounts of
			Amounts of			Offset in the				Assets Presented
			Recognized			Statements of				in the Statements of			Financial			Cash Collateral
			Assets			Financial Condition				Financial Condition			Instruments			Received			Net Amount
	Swaps:		(in thousands)
	30-Sep-14		$	800		$	-			$	800		$	(657	)	$	-		$	143
	31-Dec-13			275			-				275			(155	)		-			120
	30-Sep-13		$	101		$	-			$	101		$	(101	)	$	-		$	-

													Gross Amounts Not Offset in the
													Statements of Financial Condition
			Gross			Gross Amounts				Net Amounts of
			Amounts of			Offset in the				Liabilities Presented
			Recognized			Statements of				in the Statements of			Financial			Cash Collateral
			Liabilities			Financial Condition				Financial Condition			Instruments			Pledged			Net Amount
	Swaps:		(in thousands)
	30-Sep-14		$	657		$	-			$	657		$	(657	)	$	-		$	-
	31-Dec-13			155			-				155			(155	)		-			-
	30-Sep-13		$	135		$	-			$	135		$	(101	)	$	-		$	34
Summary of Available-for-sale Securities	'


	The following is a summary of the cost, gross unrealized gains, gross unrealized losses and fair value of available for sale investments as of September 30, 2014, December 31, 2013 and September 30, 2013:

			30-Sep-14
						Gross				Gross
						Unrealized				Unrealized
			Cost			Gains				Losses			Fair Value
			(In thousands)
	Common stocks		$	14,228		$	22,152			$	-		$	36,380
	Closed-end Funds			21,819			14,325				(2	)		36,142
	Mutual funds			2,603			2,163				-			4,766
	Total available for sale securities		$	38,650		$	38,640			$	(2	)	$	77,288

			31-Dec-13
						Gross				Gross
						Unrealized				Unrealized
			Cost			Gains				Losses			Fair Value
			(In thousands)
	Common stocks		$	13,389		$	29,657			$	-		$	43,046
	Closed-end Funds			23,100			17,654				(130	)		40,624
	Mutual funds			2,794			2,325				(24	)		5,095
	Total available for sale securities		$	39,283		$	49,636			$	(154	)	$	88,765

			30-Sep-13
						Gross				Gross
						Unrealized				Unrealized
			Cost			Gains				Losses			Fair Value
			(In thousands)
	Common stocks		$	16,372		$	19,925			$	-		$	36,297
	Closed-end Funds			23,850			16,545				(123	)		40,272
	Mutual funds			2,874			2,141				(36	)		4,979
	Total available for sale securities		$	43,096		$	38,611			$	(159	)	$	81,548
Investments classified as available for sale unrealized loss position	'

			30-Sep-14										31-Dec-13								30-Sep-13
						Unrealized										Unrealized							Unrealized
			Cost			Losses				Fair Value			Cost			Losses			Fair Value		Cost		Losses			Fair Value
	(in thousands)
	Cosed-end funds		$	79		$	(2	)		$	77		$	912		$	(130	)	$	782	$	941	$	(123	)	$	818
	Mutual Funds			-			-				-			303			(24	)		279		365		(36	)		329
	Total		$	79		$	(2	)		$	77		$	1,215		$	(154	)	$	1,061	$	1,306	$	(159	)	$	1,147

Fair_Value_Tables

Fair Value (Tables)	9 Months Ended
Fair Value (Tables)	Sep. 30, 2014
Fair Value [Abstract]	'
Assets and Liabilities Measured at Fair Value on a Recurring Basis	'
	The following tables present information about the Company's assets and liabilities by major categories measured at fair value on a recurring basis as of September 30, 2014, December 31, 2013 and September 30, 2013 and indicates the fair value hierarchy of the valuation techniques utilized by the Company to determine such fair value:

	Assets and Liabilities Measured at Fair Value on a Recurring Basis as of September 30, 2014 (in thousands)

			Quoted Prices in Active			Significant Other				Significant			Balance as of
			Markets for Identical			Observable				Unobservable			September 30,
	Assets		Assets (Level 1)			Inputs (Level 2)				Inputs (Level 3)			2014
	Cash equivalents		$	358,210		$	-			$	-		$	358,210
	Investments in partnerships			-			24,094				-			24,094
	Investments in securities:
	AFS - Common stocks			36,380			-				-			36,380
	AFS - Mutual funds			1,389			-				-			1,389
	Trading - Gov't obligations			20,999			-				-			20,999
	Trading - Common stocks			190,215			-				724			190,939
	Trading - Mutual funds			3,373			-				-			3,373
	Trading - Other			453			803				294			1,550
	Total investments in securities			252,809			803				1,018			254,630
	Investments in sponsored registered investment companies:
	AFS - Closed-end Funds			36,142			-				-			36,142
	AFS - Mutual Funds			3,377			-				-			3,377
	Trading - Mutual funds			1			-				-			1
	Total investments in sponsored
	registered investment companies			39,520			-				-			39,520
	Total investments			292,329			24,897				1,018			318,244
	Total assets at fair value		$	650,539		$	24,897			$	1,018		$	676,454
	Liabilities
	Trading - Common stocks		$	13,514		$	-			$	-		$	13,514
	Trading - Other			-			666				-			666
	Securities sold, not yet purchased		$	13,514		$	666			$	-		$	14,180

	Assets and Liabilities Measured at Fair Value on a Recurring Basis as of December 31, 2013 (in thousands)

			Quoted Prices in Active			Significant Other				Significant			Balance as of
			Markets for Identical			Observable				Unobservable			December 31,
	Assets		Assets (Level 1)			Inputs (Level 2)				Inputs (Level 3)			2013
	Cash equivalents		$	209,913		$	-			$	-		$	209,913
	Investments in partnerships			-			25,253				-			25,253
	Investments in securities:
	AFS - Common stocks			43,046			-				-			43,046
	AFS - Mutual funds			1,687			-				-			1,687
	Trading - Gov't obligations			37,994			-				-			37,994
	Trading - Common stocks			123,927			7				700			124,634
	Trading - Mutual funds			23,285			-				-			23,285
	Trading - Other			23			275				284			582
	Total investments in securities			229,962			282				984			231,228
	Investments in sponsored registered investment companies:
	AFS - Closed-end Funds			40,624			-				-			40,624
	AFS - Mutual Funds			3,408			-				-			3,408
	Trading - Mutual funds			10			-				-			10
	Total investments in sponsored
	registered investment companies			44,042			-				-			44,042
	Total investments			274,004			25,535				984			300,523
	Total assets at fair value		$	483,917		$	25,535			$	984		$	510,436
	Liabilities
	Trading - Common stocks		$	6,023		$	-			$	-		$	6,023
	Trading - Other			-			155				-			155
	Securities sold, not yet purchased		$	6,023		$	155			$	-		$	6,178

	Assets and Liabilities Measured at Fair Value on a Recurring Basis as of September 30, 2013 (in thousands)

			Quoted Prices in Active			Significant Other				Significant			Balance as of
			Markets for Identical			Observable				Unobservable			September 30,
	Assets		Assets (Level 1)			Inputs (Level 2)				Inputs (Level 3)			2013
Cash equivalents		$	244,144		$	-			$	-		$	244,144
Investments in partnerships			-			23,146				-			23,146
Investments in securities:
AFS - Common stocks			36,297			-				-			36,297
AFS - Mutual funds			1,575			-				-			1,575
Trading - Gov't obligations			21,000			-				-			21,000
Trading - Common stocks			165,776			-				667			166,443
Trading - Mutual funds			12,010			-				-			12,010
Trading - Other			32			104				283			419
Total investments in securities			236,690			104				950			237,744
Investments in sponsored registered investment companies:
AFS - Closed-end Funds			40,272			-				-			40,272
AFS - Mutual Funds			3,404			-				-			3,404
Trading - Mutual funds			12			-				-			12
Total investments in sponsored
registered investment companies			43,688			-				-			43,688
Total investments			280,378			23,250				950			304,578
Total assets at fair value		$	524,522		$	23,250			$	950		$	548,722
Liabilities
Trading - Common stocks		$	7,003		$	-			$	-		$	7,003
Trading - Other			-			722				-			722
Securities sold, not yet purchased		$	7,003		$	722			$	-		$	7,725
Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis	'
	The following tables present additional information about assets by major categories measured at fair value on a recurring basis and for which the Company has utilized Level 3 inputs to determine fair value.

	Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Three Months Ended September 30, 2014 (in thousands)

													Total
													Unrealized
													Gains or			Total
						Total Realized and							(Losses)			Realized
			June			Unrealized Gains or							Included in			and										Transfers
			30, 2014			(Losses) in Income							Other			Unrealized										In and/or
			Beginning							AFS			Comprehensive			Gains or										(Out) of			Ending
	Asset		Balance			Trading				Investments			Income			(Losses)				Purchases			Sales			Level 3			Balance
	Financial
	instruments owned:

	Trading - Common stocks		$	716		$	8			$	-		$	-		$	8			$	-		$	-		$	-		$	724
	Trading - Other			294			-				-			-			-				-			-			-			294
	Total		$	1,010		$	8			$	-		$	-		$	8				-		$	-		$	-		$	1,018

	There were no transfers between any Levels during the three months ended September 30, 2014.

	Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Three Months Ended September 30, 2013 (in thousands)

													Total
													Unrealized
													Gains or			Total
						Total Realized and							(Losses)			Realized
			June			Unrealized Gains or							Included in			and										Transfers
			30, 2013			(Losses) in Income							Other			Unrealized										In and/or
			Beginning							AFS			Comprehensive			Gains or										(Out) of			Ending
	Asset		Balance			Trading				Investments			Income			(Losses)				Purchases			Sales			Level 3			Balance
	Financial
	instruments owned:
	Trading - Common stocks		$	669		$	(2	)		$	-		$	-		$	(2	)		$	-		$	-		$	-		$	667
	Trading - Other			284			(1	)			-			-			(1	)			-			-			-			283
	Total		$	953		$	(3	)		$	-		$	-		$	(3	)		$	-		$	-		$	-		$	950

	There were no transfers between any Levels during the three months ended September 30, 2013.


	Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Nine Months Ended September 30, 2014 (in thousands)

													Total
													Unrealized
													Gains or			Total
						Total Realized and							(Losses)			Realized
			December			Unrealized Gains or							Included in			and										Transfers
			31, 2013			(Losses) in Income							Other			Unrealized										In and/or
			Beginning							AFS			Comprehensive			Gains or										(Out) of			Ending
	Asset		Balance			Trading				Investments			Income			(Losses)				Purchases			Sales			Level 3			Balance
	Financial
	instruments owned:

	Trading - Common stocks		$	700		$	24			$	-		$	-		$	24			$	-		$	-		$	-		$	724
	Trading - Other			284			-				-			-			-				10			-			-			294
	Total		$	984		$	24			$	-		$	-		$	24				10		$	-		$	-		$	1,018

	There were no transfers between any Levels during the nine months ended September 30, 2014.

	Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis for the Nine Months Ended September 30, 2013 (in thousands)

													Total
													Unrealized
												Gains or			Total
					Total Realized and							(Losses)			Realized
		December			Unrealized Gains or							Included in			and										Transfers
		31, 2012			(Losses) in Income							Other			Unrealized										In and/or
		Beginning							AFS			Comprehensive			Gains or										(Out) of			Ending
Asset		Balance			Trading				Investments			Income			(Losses)				Purchases			Sales			Level 3			Balance
Financial
instruments owned:
Trading - Common stocks		$	675		$	(8	)		$	-		$	-		$	(8	)		$	-		$	-		$	-		$	667
Trading - Other			362			(3	)			-			-			(3	)			3			(79	)		-			283
Total		$	1,037		$	(11	)		$	-		$	-		$	(11	)		$	3		$	(79	)	$	-		$	950

There were no transfers between any Levels during the nine months ended September 30, 2013.

Investments_in_Partnerships_Of1

Investments in Partnerships, Offshore Funds and Variable Interest Entities (Tables)	9 Months Ended
	Sep. 30, 2014
Investments in Partnerships, Offshore Funds and Variable Interests [Abstract]	'
Schedule of Number of Entities Consolidated	'
	The following table highlights the number of entities, including voting interest entities ("VOEs"), that we consolidate as well as under which accounting guidance they are consolidated, including CFFs, which retain their specialized investment company accounting in consolidation, partnerships and offshore funds.


	Entities consolidated
		CFFs						Partnerships						Offshore Funds					Total
		VIEs			VOEs			VIEs			VOEs			VIEs			VOEs		VIEs		VOEs
	Entities consolidated at December 31, 2012		1			2			-			1			-			1		1		4
	Additional consolidated entities		-			-			-			-			-			-		-		-
	Deconsolidated entities		-			-			-			-			-			-		-		-
	Entities consolidated at September 30, 2013		1			2			-			1			-			1		1		4
	Additional consolidated entities		-			-			-			-			-			-		-		-
	Deconsolidated entities		-			-			-			-			-			-		-		-
	Entities consolidated at December 31, 2013		1			2			-			1			-			1		1		4
	Additional consolidated entities		-			-			-			-			-			-		-		-
	Deconsolidated entities		-			-			-			-			-			-		-		-
	Entities consolidated at September 30, 2014		1			2			-			1			-			1		1		4
Investments in Partnerships by Accounting Method	'
	The following table breaks down the investments in partnerships line by accounting method, either fair value or equity method, and investment type (in thousands):

		30-Sep-14
		Investment Type
		Affiliated									Unaffiliated
		Consolidated
	Accounting method	Feeder Funds			Partnerships			Offshore Funds			Partnerships			Offshore Funds			Total

	Fair Value	$	24,094		$	-		$	-		$	-		$	-		$	24,094
	Equity Method		-			34,967			34,185			6,611			7,577			83,340

	Total	$	24,094		$	34,967		$	34,185		$	6,611		$	7,577		$	107,434

		31-Dec-13
		Investment Type
		Affiliated									Unaffiliated
		Consolidated
	Accounting method	Feeder Funds			Partnerships			Offshore Funds			Partnerships			Offshore Funds			Total

	Fair Value	$	25,253		$	-		$	-		$	-		$	-		$	25,253
	Equity Method		-			21,669			35,030			6,509			7,531			70,739

	Total	$	25,253		$	21,669		$	35,030		$	6,509		$	7,531		$	95,992

		30-Sep-13
		Investment Type
		Affiliated									Unaffiliated
		Consolidated
	Accounting method	Feeder Funds			Partnerships			Offshore Funds			Partnerships			Offshore Funds			Total

	Fair Value	$	23,146		$	-		$	-		$	-		$	-		$	23,146
	Equity Method		-			26,717			34,460			6,080			7,349			74,606

	Total	$	23,146		$	26,717		$	34,460		$	6,080		$	7,349		$	97,752
Condensed Consolidated Statements Of Financial Condition By Entity Consolidated	'
	The following table includes the net impact by line item on the condensed consolidated statements of financial condition for each category of entity consolidated (in thousands):

		30-Sep-14
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
	Assets
	Cash and cash equivalents	$	358,316		$	7		$	98		$	-		$	358,421
	Investments in securities		203,280			-			8,836			42,514			254,630
	Investments in sponsored investment companies		39,520			-			-			-			39,520
	Investments in partnerships		110,679			4,684			(7,929	)		-			107,434
	Receivable from brokers		31,388			-			306			48,191			79,885
	Investment advisory fees receivable		31,221			17			(1	)		(82	)		31,155
	Other assets		28,528			24			(1,000	)		163			27,715
	Total assets	$	802,932		$	4,732		$	310		$	90,786		$	898,760
	Liabilities and equity
	Securities sold, not yet purchased	$	13,549		$	-		$	-		$	631		$	14,180
	Accrued expenses and other liabilities		166,209			71			31			39,009			205,320
	Total debt		111,941			-			-			-			111,941
	Redeemable noncontrolling interests		-			4,661			279			51,146			56,086
	Total equity		511,233			-			-			-			511,233
	Total liabilities and equity	$	802,932		$	4,732		$	310		$	90,786		$	898,760

		31-Dec-13
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
	Assets
	Cash and cash equivalents	$	209,667		$	450		$	334		$	-		$	210,451
	Investments in securities		232,211			-			7,464			(8,447	)		231,228
	Investments in sponsored investment companies		44,033			-			9			-			44,042
	Investments in partnerships		98,494			6,517			(9,019	)		-			95,992
	Receivable from brokers		35,151			-			-			14,310			49,461
	Investment advisory fees receivable		52,509			(24	)		(14	)		(965	)		51,506
	Other assets		27,433			(2,339	)		1,592			119			26,805
	Total assets	$	699,498		$	4,604		$	366		$	5,017		$	709,485
	Liabilities and equity
	Securities sold, not yet purchased	$	6,049		$	-		$	-		$	129		$	6,178
	Accrued expenses and other liabilities		121,356			165			29			2,913			124,463
	Total debt		111,911			-			-			-			111,911
	Redeemable noncontrolling interests		-			4,439			337			1,975			6,751
	Total equity		460,182			-			-			-			460,182
	Total liabilities and equity	$	699,498		$	4,604		$	366		$	5,017		$	709,485

		30-Sep-13
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
	Assets
	Cash and cash equivalents	$	243,995		$	1,082		$	334		$	-		$	245,411
	Investments in securities		240,113			-			7,400			(9,769	)		237,744
	Investments in sponsored investment companies		43,677			-			11			-			43,688
	Investments in partnerships		104,010			3,253			(9,511	)		-			97,752
	Receivable from brokers		26,981			-			2,115			14,758			43,854
	Investment advisory fees receivable		31,241			(8	)		(1	)		(81	)		31,151
	Other assets		34,947			-			-			75			35,022
	Total assets	$	724,964		$	4,327		$	348		$	4,983		$	734,622
	Liabilities and equity
	Securities sold, not yet purchased	$	7,577		$	-		$	-		$	148		$	7,725
	Accrued expenses and other liabilities		161,394			1,146			32			2,567			165,139
	Total debt		117,347			-			-			-			117,347
	Redeemable noncontrolling interests		-			3,181			316			2,268			5,765
	Total equity		438,646			-			-			-			438,646
	Total liabilities and equity	$	724,964		$	4,327		$	348		$	4,983		$	734,622
Condensed Consolidated Statements Of Income By Entity Consolidated	'
	The following table includes the net impact by line item on the condensed consolidated statements of income for each category of entity consolidated (in thousands):

		Three Months Ended September 30, 2014
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
	Total revenues	$	111,073		$	(7	)	$	-		$	(208	)	$	110,858
	Total expenses		66,980			20			12			260			67,272
	Operating income		44,093			(27	)		(12	)		(468	)		43,586
	Total other income/(expense), net		(7,462	)		(186	)		(18	)		(2,323	)		(9,989	)
	Income before income taxes		36,631			(213	)		(30	)		(2,791	)		33,597
	Income tax provision		13,045			-			-			-			13,045
	Net income		23,586			(213	)		(30	)		(2,791	)		20,552
	Net loss attributable to noncontrolling interests		(79	)		(213	)		(30	)		(2,791	)		(3,113	)
	Net income attributable to GAMCO	$	23,665		$	-		$	-		$	-		$	23,665

		Three Months Ended September 30, 2013
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
	Total revenues	$	96,620		$	(8	)	$	(1	)	$	(234	)	$	96,377
	Total expenses		63,400			46			11			192			63,649
	Operating income		33,220			(54	)		(12	)		(426	)		32,728
	Total other income, net		17,404			94			31			462			17,991
	Income before income taxes		50,624			40			19			36			50,719
	Income tax provision		17,515			-			-			-			17,515
	Net income		33,109			40			19			36			33,204
	Net income attributable to noncontrolling interests		11			40			19			36			106
	Net income attributable to GAMCO	$	33,098		$	-		$	-		$	-		$	33,098


		Nine Months Ended September 30, 2014
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
	Total revenues	$	324,287		$	(21	)	$	(2	)	$	(633	)	$	323,631
	Total expenses		205,207			34			38			730			206,009
	Operating income		119,080			(55	)		(40	)		(1,363	)		117,622
	Total other income/(expense), net		6,172			20			19			(1,186	)		5,025
	Income before income taxes		125,252			(35	)		(21	)		(2,549	)		122,647
	Income tax provision		44,796			-			-			-			44,796
	Net income		80,456			(35	)		(21	)		(2,549	)		77,851
	Net loss attributable to noncontrolling interests		(113	)		(35	)		(21	)		(2,549	)		(2,718	)
	Net income attributable to GAMCO	$	80,569		$	-		$	-		$	-		$	80,569

		Nine Months Ended September 30, 2013
		Prior to									Offshore
		Consolidation			CFFs			Partnerships			Funds			As Reported
	Total revenues	$	275,689		$	(20	)	$	(2	)	$	(819	)	$	274,848
	Total expenses		178,858			134			36			581			179,609
	Operating income		96,831			(154	)		(38	)		(1,400	)		95,239
	Total other income, net		33,125			228			79			1,559			34,991
	Income before income taxes		129,956			74			41			159			130,230
	Income tax provision		46,434			-			-			-			46,434
	Net income		83,522			74			41			159			83,796
	Net income/(loss) attributable to noncontrolling interests		(14	)		74			41			159			260
	Net income attributable to GAMCO	$	83,536		$	-		$	-		$	0		$	83,536

GAMCO's Net Interest in Consolidated VIEs	'
	The assets of these VIEs may only be used to satisfy obligations of the VIEs. The following table presents the balances related to the VIE that is consolidated and is included on the condensed consolidated statements of financial condition as well as GAMCO's net interest in this VIE. Only one VIE was consolidated at September 30, 2014, December 31, 2013 and September 30, 2013:

		September 30,			December 31,			September 30,
		2014			2013			2013
	(In thousands)
	Cash and cash equivalents	$	1		$	-		$	1,082
	Investments in partnerships		13,618			15,540			13,782
	Accrued expenses and other liabilities		(15	)		(2,022	)		(1,088	)
	Redeemable noncontrolling interests		(962	)		(1,120	)		-
	GAMCO's net interests in consolidated VIE	$	12,642		$	12,398		$	13,776

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
Earnings Per Share (Tables)	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Computations of basic and diluted net income per share	'
	The computations of basic and diluted net income per share are as follows:

		Three Months Ended September 30,				Nine Months Ended September 30,
	(in thousands, except per share amounts)	2014		2013		2014		2013
	Basic:
	Net income attributable to GAMCO Investors, Inc.'s shareholders	$	23,665	$	33,098	$	80,569	$	83,536
	Weighted average shares outstanding		25,296		25,625		25,385		25,682
	Basic net income attributable to GAMCO Investors, Inc.'s
	shareholders per share	$	0.94	$	1.29	$	3.17	$	3.25

	Diluted:
	Net income attributable to GAMCO Investors, Inc.'s shareholders	$	23,665	$	33,098	$	80,569	$	83,536

	Weighted average share outstanding		25,296		25,625		25,385		25,682
	Dilutive stock options and restricted stock awards		221		75		210		35
	Total		25,517		25,700		25,595		25,717
	Diluted net income attributable to GAMCO Investors, Inc.'s
	shareholders per share	$	0.93	$	1.29	$	3.15	$	3.25

Debt_Tables

Debt (Tables)	9 Months Ended
Debt (Tables)	Sep. 30, 2014
Debt [Abstract]	'
Schedule of Debt	'
	Debt consists of the following:

		30-Sep-14				31-Dec-13				30-Sep-13
		Carrying		Fair Value		Carrying		Fair Value		Carrying		Fair Value
		Value		Level 2		Value		Level 2		Value		Level 2
	(In thousands)
	5.875% Senior notes	$	100,000	$	108,200	$	100,000	$	108,500	$	100,000	$	108,000
	0% Subordinated debentures		11,941		12,775		11,911		13,819		17,347		19,349
	Total	$	111,941	$	120,975	$	111,911	$	122,319	$	117,347	$	127,349

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	9 Months Ended
Stockholders' Equity (Tables)	Sep. 30, 2014
Stockholders' Equity [Abstract]	'
Dividends	'
	Dividends

	Payment Date		Record Date	Amount

	Three months ended March 31, 2014	25-Mar-14	11-Mar-14	$	0.06
	Three months ended June 30, 2014	24-Jun-14	10-Jun-14	$	0.06
	Three months ended September 30, 2014	30-Sep-14	16-Sep-14		0.06
	Nine months ended September 30, 2014			$	0.18

	Three months ended March 31, 2013	26-Mar-13	12-Mar-13	$	0.05
	Three months ended June 30, 2013	25-Jun-13	11-Jun-13	$	0.05
	Three months ended September 30, 2013	24-Sep-13	10-Sep-13	$	0.06
	Nine months ended September 30, 2013			$	0.16
Actual and projected stock-based compensation expense for RSA shares and options	'
	For the three months ended September 30, 2014 and September 30, 2013, we recognized stock-based compensation expense of $1.8 million and $0.7 million, respectively. For the nine months ended September 30, 2014 and September 30, 2013, we recognized stock-based compensation expense of $5.2 million and $0.8 million, respectively. Actual and projected stock-based compensation expense for RSA shares and options for the years ended December 31, 2014 through December 31, 2023 (based on awards currently issued or granted) is as follows ($ in thousands):

				2013		2014		2015		2016		2017		2018
		Q1		$	15	$	1,700	$	1,962	$	1,961	$	1,171	$	908
		Q2			15		1,697		1,961		1,961		1,171		908
		Q3			741		1,785		1,961		1,607		1,040		828
		Q4			1,301		1,965		1,961		1,346		910		659
	Full Year			$	2,072	$	7,147	$	7,845	$	6,875	$	4,292	$	3,303

					2019		2020		2021		2022		2023		2024
		Q1		$	429	$	319	$	227	$	146	$	76	$	12
		Q2			429		319		227		146		76		12
		Q3			364		264		179		104		38		8
		Q4			319		227		146		76		12		-
	Full Year			$	1,541	$	1,129	$	779	$	472	$	202	$	32

Investment_in_Securities_Part_

Investment in Securities, Part I (Details) (USD $)	3 Months Ended		9 Months Ended
Share data in Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Available for sale securities:	'	'	'	'	'
Available-for-sale Securities, Cost	$38,650,000	$43,096,000	$38,650,000	$43,096,000	$39,283,000
Available for sale securities, Fair Value	77,288,000	81,548,000	77,288,000	81,548,000	88,765,000
Investments in securities	254,630,000	237,744,000	254,630,000	237,744,000	231,228,000
Amount Reclassified from AOCI [Abstract]	'	'	'	'	'
Net gain from investments - Realized gain / (loss) on sale of securities	348,000	5,745,000	3,511,000	16,191,000	'
Other operating expenses	0	3,112,000	3,639,000	3,443,000	'
Other Comprehensive Income (Loss), Reclassification Adjustment for Write-down of Securities Included in Net Income, before Tax	0	0	-69,000	-14,000	'
Income before income taxes	348,000	8,857,000	7,081,000	19,620,000	'
Income tax provision	-129,000	-3,277,000	-2,620,000	-7,259,000	'
Net income	219,000	5,580,000	4,461,000	12,361,000	'
Gross Amounts Not Offset in the Statements of Financial Position, Liabilities [Abstract]	'	'	'	'	'
Net gain/(loss) on equity derivative	661,000	191,000	591,000	471,000	'
Shares under derivative contract (in shares)	2.3	1.6	2.3	1.6	1.3
Derivative fair value of derivative net	134,000	-143,000	134,000	-143,000	120,000
Swaps [Member]	'	'	'	'	'
Offsetting Derivative Assets [Abstract]	'	'	'	'	'
Gross amounts of recognized assets	800,000	101,000	800,000	101,000	275,000
Gross amounts offset in the Statements of Financial Position	0	0	0	0	0
Net Amounts of Assets Presented in the Statements of Financial Position	800,000	101,000	800,000	101,000	275,000
Gross Amounts Not Offset in the Statements of Financial Position, Assets [Abstract]	'	'	'	'	'
Financial Instruments	-657,000	-101,000	-657,000	-101,000	-155,000
Cash collateral received	0	0	0	0	0
Net amount	143,000	0	143,000	0	120,000
Offsetting Derivative Liabilities [Abstract]	'	'	'	'	'
Gross amounts of recognized liabilities	657,000	135,000	657,000	135,000	155,000
Gross amounts offset in the Statements of Financial Position	0	0	0	0	0
Net Amounts of Assets Presented in the Statements of Financial Position	657,000	135,000	657,000	135,000	155,000
Gross Amounts Not Offset in the Statements of Financial Position, Liabilities [Abstract]	'	'	'	'	'
Financial Instruments	-657,000	-101,000	-657,000	-101,000	-155,000
Cash collateral received	0	0	0	0	0
Net amount	0	34,000	0	34,000	0
Investment in Securities [Member]	'	'	'	'	'
Trading securities:	'	'	'	'	'
Trading Securities, Cost	206,787,000	193,418,000	206,787,000	193,418,000	169,804,000
Trading securities, fair value	254,630,000	237,744,000	254,630,000	237,744,000	231,228,000
Investment in Securities [Member] \| Trading Securities [Member]	'	'	'	'	'
Trading securities:	'	'	'	'	'
Trading Securities, Cost	191,878,000	176,203,000	191,878,000	176,203,000	155,572,000
Trading securities, fair value	216,861,000	199,872,000	216,861,000	199,872,000	186,495,000
Trading Securities:	'	'	'	'	'
Cost	11,770,000	6,937,000	11,770,000	6,937,000	5,319,000
Fair Value	14,180,000	7,725,000	14,180,000	7,725,000	6,178,000
Investment in Securities [Member] \| Trading Securities [Member] \| Government obligations [Member]	'	'	'	'	'
Trading securities:	'	'	'	'	'
Trading Securities, Cost	20,995,000	20,993,000	20,995,000	20,993,000	37,986,000
Trading securities, fair value	20,999,000	21,000,000	20,999,000	21,000,000	37,994,000
Investment in Securities [Member] \| Trading Securities [Member] \| Common Stock [Member]	'	'	'	'	'
Trading securities:	'	'	'	'	'
Trading Securities, Cost	167,714,000	143,731,000	167,714,000	143,731,000	96,225,000
Trading securities, fair value	190,939,000	166,443,000	190,939,000	166,443,000	124,634,000
Trading Securities:	'	'	'	'	'
Cost	11,699,000	6,411,000	11,699,000	6,411,000	5,319,000
Fair Value	13,514,000	7,003,000	13,514,000	7,003,000	6,023,000
Investment in Securities [Member] \| Trading Securities [Member] \| Mutual Funds [Member]	'	'	'	'	'
Trading securities:	'	'	'	'	'
Trading Securities, Cost	2,416,000	11,073,000	2,416,000	11,073,000	21,074,000
Trading securities, fair value	3,373,000	12,010,000	3,373,000	12,010,000	23,285,000
Investment in Securities [Member] \| Trading Securities [Member] \| Other Investments [Member]	'	'	'	'	'
Trading securities:	'	'	'	'	'
Trading Securities, Cost	753,000	406,000	753,000	406,000	287,000
Trading securities, fair value	1,550,000	419,000	1,550,000	419,000	582,000
Trading Securities:	'	'	'	'	'
Cost	71,000	526,000	71,000	526,000	0
Fair Value	666,000	722,000	666,000	722,000	155,000
Investment in Securities [Member] \| Available-for-sale Securities [Member]	'	'	'	'	'
Trading securities:	'	'	'	'	'
Trading Securities, Cost	14,909,000	17,215,000	14,909,000	17,215,000	14,232,000
Trading securities, fair value	37,769,000	37,872,000	37,769,000	37,872,000	44,733,000
Investment in Securities [Member] \| Available-for-sale Securities [Member] \| Common Stock [Member]	'	'	'	'	'
Trading securities:	'	'	'	'	'
Trading Securities, Cost	14,228,000	16,372,000	14,228,000	16,372,000	13,389,000
Trading securities, fair value	36,380,000	36,297,000	36,380,000	36,297,000	43,046,000
Investment in Securities [Member] \| Available-for-sale Securities [Member] \| Mutual Funds [Member]	'	'	'	'	'
Trading securities:	'	'	'	'	'
Trading Securities, Cost	681,000	843,000	681,000	843,000	843,000
Trading securities, fair value	1,389,000	1,575,000	1,389,000	1,575,000	1,687,000
Investment in Sponsored Registered Investment Companies [Member]	'	'	'	'	'
Available for sale securities:	'	'	'	'	'
Available-for-sale Securities, Cost	23,742,000	25,900,000	23,742,000	25,900,000	25,070,000
Available for sale securities, Fair Value	39,520,000	43,688,000	39,520,000	43,688,000	44,042,000
Investment in Sponsored Registered Investment Companies [Member] \| Trading Securities [Member]	'	'	'	'	'
Available for sale securities:	'	'	'	'	'
Available-for-sale Securities, Cost	1,000	19,000	1,000	19,000	19,000
Available for sale securities, Fair Value	1,000	12,000	1,000	12,000	10,000
Investment in Sponsored Registered Investment Companies [Member] \| Trading Securities [Member] \| Mutual Funds [Member]	'	'	'	'	'
Available for sale securities:	'	'	'	'	'
Available-for-sale Securities, Cost	1,000	19,000	1,000	19,000	19,000
Available for sale securities, Fair Value	1,000	12,000	1,000	12,000	10,000
Investment in Sponsored Registered Investment Companies [Member] \| Available-for-sale Securities [Member]	'	'	'	'	'
Available for sale securities:	'	'	'	'	'
Available-for-sale Securities, Cost	23,741,000	25,881,000	23,741,000	25,881,000	25,051,000
Available for sale securities, Fair Value	39,519,000	43,676,000	39,519,000	43,676,000	44,032,000
Investment in Sponsored Registered Investment Companies [Member] \| Available-for-sale Securities [Member] \| Mutual Funds [Member]	'	'	'	'	'
Available for sale securities:	'	'	'	'	'
Available-for-sale Securities, Cost	1,922,000	2,031,000	1,922,000	2,031,000	1,951,000
Available for sale securities, Fair Value	3,377,000	3,404,000	3,377,000	3,404,000	3,408,000
Investment in Sponsored Registered Investment Companies [Member] \| Available-for-sale Securities [Member] \| Closed end Funds [Member]	'	'	'	'	'
Available for sale securities:	'	'	'	'	'
Available-for-sale Securities, Cost	21,819,000	23,850,000	21,819,000	23,850,000	23,100,000
Available for sale securities, Fair Value	$36,142,000	$40,272,000	$36,142,000	$40,272,000	$40,624,000

Investment_in_Securities_Part_1

Investment in Securities, Part II (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
	InvestmentHoldinginLossPosition	InvestmentHoldinginLossPosition	InvestmentHoldinginLossPosition	InvestmentHoldinginLossPosition	InvestmentHoldinginLossPosition	Dec. 31, 2012
Available for Sale Securities, Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Value [Abstract]	'	'	'	'	'	'
Cost	$38,650,000	$43,096,000	$38,650,000	$43,096,000	$39,283,000	'
Gross unrealized gains	38,640,000	38,611,000	38,640,000	38,611,000	49,636,000	'
Gross unrealized losses	-2,000	-159,000	-2,000	-159,000	-154,000	'
Total available for sale securities	77,288,000	81,548,000	77,288,000	81,548,000	88,765,000	'
Unrealized changes to fair value net of taxes included in other comprehensive income	-2,407,000	-2,170,000	-6,832,000	-3,030,000	'	'
Return of capital on available for sale securities	266,000	469,000	827,000	1,094,000	'	'
Proceeds from sale of investment available for sale	1,500,000	10,444,000	8,018,000	32,422,000	'	'
Gross realized gains on sale of investment available for sale	300,000	5,700,000	3,500,000	16,200,000	'	'
Investments classified as available for sale unrealized loss position [Abstract]	'	'	'	'	'	'
Cost	79,000	1,306,000	79,000	1,306,000	1,215,000	'
Unrealized Losses	'	'	-2,000	-159,000	-154,000	'
Fair Value	77,000	1,147,000	77,000	1,147,000	1,061,000	'
Number of investment holding in loss positions	1	4	1	4	4	'
Investment holding impairment period (in months)	'1 month	'4 months	'	'	'	'7 months
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	0	0	69,000	14,000	'	'
Common Stock [Member]	'	'	'	'	'	'
Available for Sale Securities, Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Value [Abstract]	'	'	'	'	'	'
Cost	14,228,000	16,372,000	14,228,000	16,372,000	13,389,000	'
Gross unrealized gains	22,152,000	19,925,000	22,152,000	19,925,000	29,657,000	'
Gross unrealized losses	0	0	0	0	0	'
Total available for sale securities	36,380,000	36,297,000	36,380,000	36,297,000	43,046,000	'
Closed-end Funds [Member]	'	'	'	'	'	'
Available for Sale Securities, Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Value [Abstract]	'	'	'	'	'	'
Cost	21,819,000	23,850,000	21,819,000	23,850,000	23,100,000	'
Gross unrealized gains	14,325,000	16,545,000	14,325,000	16,545,000	17,654,000	'
Gross unrealized losses	-2,000	-123,000	-2,000	-123,000	-130,000	'
Total available for sale securities	36,142,000	40,272,000	36,142,000	40,272,000	40,624,000	'
Investments classified as available for sale unrealized loss position [Abstract]	'	'	'	'	'	'
Cost	79,000	941,000	79,000	941,000	912,000	'
Unrealized Losses	'	'	-2,000	-123,000	-130,000	'
Fair Value	77,000	818,000	77,000	818,000	782,000	'
Mutual Funds [Member]	'	'	'	'	'	'
Available for Sale Securities, Cost, Gross Unrealized Gains, Gross Unrealized Losses and Fair Value [Abstract]	'	'	'	'	'	'
Cost	2,603,000	2,874,000	2,603,000	2,874,000	2,794,000	'
Gross unrealized gains	2,163,000	2,141,000	2,163,000	2,141,000	2,325,000	'
Gross unrealized losses	0	-36,000	0	-36,000	-24,000	'
Total available for sale securities	4,766,000	4,979,000	4,766,000	4,979,000	5,095,000	'
Investments classified as available for sale unrealized loss position [Abstract]	'	'	'	'	'	'
Cost	0	365,000	0	365,000	303,000	'
Unrealized Losses	'	'	0	-36,000	-24,000	'
Fair Value	$0	$329,000	$0	$329,000	$279,000	'

Fair_Value_Details

Fair Value (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Assets	'	'	'	'	'
Investments in partnerships	$24,094	$23,146	$24,094	$23,146	$25,253
Liabilities	'	'	'	'	'
Securities sold, not yet purchased	14,180	7,725	14,180	7,725	6,178
Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis [Roll Forward]	'	'	'	'	'
Beginning Balance	1,010	953	984	1,037	'
Total Realized and Unrealized Gains or (Losses) - Trading	8	-3	24	-11	'
Total Realized and Unrealized Gains or (Losses) in Income - AFS Investments	0	0	0	0	'
Total Unrealized Gains or (Losses) Included in Other Comprehensive Income	0	0	0	0	'
Total Realized and Unrealized Gains or (Losses)	8	-3	24	-11	'
Purchases	0	0	10	3	'
Sales	0	0	0	79	'
Transfers In and/or (Out) of Level 3	0	0	0	0	'
Ending Balance	1,018	950	1,018	950	'
Trading - Common stocks [Member]	'	'	'	'	'
Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis [Roll Forward]	'	'	'	'	'
Beginning Balance	716	669	700	675	'
Total Realized and Unrealized Gains or (Losses) - Trading	8	-2	24	-8	'
Total Realized and Unrealized Gains or (Losses) in Income - AFS Investments	0	0	0	0	'
Total Unrealized Gains or (Losses) Included in Other Comprehensive Income	0	0	0	0	'
Total Realized and Unrealized Gains or (Losses)	8	-2	24	-8	'
Purchases	0	0	0	0	'
Sales	0	0	0	0	'
Transfers In and/or (Out) of Level 3	0	0	0	0	'
Ending Balance	724	667	724	667	'
Trading - Other [Member]	'	'	'	'	'
Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis [Roll Forward]	'	'	'	'	'
Beginning Balance	294	284	284	362	'
Total Realized and Unrealized Gains or (Losses) - Trading	0	-1	0	-3	'
Total Realized and Unrealized Gains or (Losses) in Income - AFS Investments	0	0	0	0	'
Total Unrealized Gains or (Losses) Included in Other Comprehensive Income	0	0	0	0	'
Total Realized and Unrealized Gains or (Losses)	0	-1	0	-3	'
Purchases	0	0	10	3	'
Sales	0	0	0	79	'
Transfers In and/or (Out) of Level 3	0	0	0	0	'
Ending Balance	294	283	294	283	'
Recurring Basis [Member]	'	'	'	'	'
Assets	'	'	'	'	'
Cash equivalents	358,210	244,144	358,210	244,144	209,913
Investments in partnerships	24,094	23,146	24,094	23,146	25,253
Investments in securities:	'	'	'	'	'
AFS-Common stocks	36,380	36,297	36,380	36,297	43,046
AFS-Mutual Funds	1,389	1,575	1,389	1,575	1,687
Trading-Government obligations	20,999	21,000	20,999	21,000	37,994
Trading-Common Stocks	190,939	166,443	190,939	166,443	124,634
Trading-Mutual Funds	3,373	12,010	3,373	12,010	23,285
Trading-Other	1,550	419	1,550	419	582
Total investments in securities	254,630	237,744	254,630	237,744	231,228
Investments in sponsored registered investment companies: [Abstract]	'	'	'	'	'
AFS - Closed-end Funds	36,142	40,272	36,142	40,272	40,624
AFS - Mutual Funds	3,377	3,404	3,377	3,404	3,408
Trading - Mutual Funds	1	12	1	12	10
Total investments in sponsored registered investment companies	39,520	43,688	39,520	43,688	44,042
Total investments	318,244	304,578	318,244	304,578	300,523
Total assets at fair value	676,454	548,722	676,454	548,722	510,436
Liabilities	'	'	'	'	'
Trading-Common Stocks	13,514	7,003	13,514	7,003	6,023
Trading-Other	666	722	666	722	155
Securities sold, not yet purchased	14,180	7,725	14,180	7,725	6,178
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] \| Recurring Basis [Member]	'	'	'	'	'
Assets	'	'	'	'	'
Cash equivalents	358,210	244,144	358,210	244,144	209,913
Investments in partnerships	0	0	0	0	0
Investments in securities:	'	'	'	'	'
AFS-Common stocks	36,380	36,297	36,380	36,297	43,046
AFS-Mutual Funds	1,389	1,575	1,389	1,575	1,687
Trading-Government obligations	20,999	21,000	20,999	21,000	37,994
Trading-Common Stocks	190,215	165,776	190,215	165,776	123,927
Trading-Mutual Funds	3,373	12,010	3,373	12,010	23,285
Trading-Other	453	32	453	32	23
Total investments in securities	252,809	236,690	252,809	236,690	229,962
Investments in sponsored registered investment companies: [Abstract]	'	'	'	'	'
AFS - Closed-end Funds	36,142	40,272	36,142	40,272	40,624
AFS - Mutual Funds	3,377	3,404	3,377	3,404	3,408
Trading - Mutual Funds	1	12	1	12	10
Total investments in sponsored registered investment companies	39,520	43,688	39,520	43,688	44,042
Total investments	292,329	280,378	292,329	280,378	274,004
Total assets at fair value	650,539	524,522	650,539	524,522	483,917
Liabilities	'	'	'	'	'
Trading-Common Stocks	13,514	7,003	13,514	7,003	6,023
Trading-Other	0	0	0	0	0
Securities sold, not yet purchased	13,514	7,003	13,514	7,003	6,023
Significant Other Observable Inputs (Level 2) [Member] \| Recurring Basis [Member]	'	'	'	'	'
Assets	'	'	'	'	'
Cash equivalents	0	0	0	0	0
Investments in partnerships	24,094	23,146	24,094	23,146	25,253
Investments in securities:	'	'	'	'	'
AFS-Common stocks	0	0	0	0	0
AFS-Mutual Funds	0	0	0	0	0
Trading-Government obligations	0	0	0	0	0
Trading-Common Stocks	0	0	0	0	7
Trading-Mutual Funds	0	0	0	0	0
Trading-Other	803	104	803	104	275
Total investments in securities	803	104	803	104	282
Investments in sponsored registered investment companies: [Abstract]	'	'	'	'	'
AFS - Closed-end Funds	0	0	0	0	0
AFS - Mutual Funds	0	0	0	0	0
Trading - Mutual Funds	0	0	0	0	0
Total investments in sponsored registered investment companies	0	0	0	0	0
Total investments	24,897	23,250	24,897	23,250	25,535
Total assets at fair value	24,897	23,250	24,897	23,250	25,535
Liabilities	'	'	'	'	'
Trading-Common Stocks	0	0	0	0	0
Trading-Other	666	722	666	722	155
Securities sold, not yet purchased	666	722	666	722	155
Significant Unobservable Inputs (Level 3) [Member] \| Recurring Basis [Member]	'	'	'	'	'
Assets	'	'	'	'	'
Cash equivalents	0	0	0	0	0
Investments in partnerships	0	0	0	0	0
Investments in securities:	'	'	'	'	'
AFS-Common stocks	0	0	0	0	0
AFS-Mutual Funds	0	0	0	0	0
Trading-Government obligations	0	0	0	0	0
Trading-Common Stocks	724	667	724	667	700
Trading-Mutual Funds	0	0	0	0	0
Trading-Other	294	283	294	283	284
Total investments in securities	1,018	950	1,018	950	984
Investments in sponsored registered investment companies: [Abstract]	'	'	'	'	'
AFS - Closed-end Funds	0	0	0	0	0
AFS - Mutual Funds	0	0	0	0	0
Trading - Mutual Funds	0	0	0	0	0
Total investments in sponsored registered investment companies	0	0	0	0	0
Total investments	1,018	950	1,018	950	984
Total assets at fair value	1,018	950	1,018	950	984
Liabilities	'	'	'	'	'
Trading-Common Stocks	0	0	0	0	0
Trading-Other	0	0	0	0	0
Securities sold, not yet purchased	$0	$0	$0	$0	$0

Investments_in_Partnerships_Of2

Investments in Partnerships, Offshore Funds and Variable Interest Entities, Part I (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2013
	Entity	Entity	Entity	Entity
Variable Interest Entity [Line Items]	'	'	'	'
Investments in affiliated entities	$93,200,000	$84,300,000	'	$82,000,000
Investments in unaffiliated entities	14,200,000	13,500,000	'	14,000,000
Investments in Partnerships by Accounting Method [Abstract]	'	'	'	'
Fair value	24,094,000	23,146,000	'	25,253,000
Equity Method Investments	83,340,000	74,606,000	'	70,739,000
Total	107,434,000	97,752,000	'	95,992,000
Maximum exposure to loss related to VIEs	8,000,000	9,900,000	'	10,000,000
Deferred carried interest in VIE	44,000	45,000	'	45,000
Total VIE assets	59,800,000	77,700,000	'	72,700,000
VIE [Member]	'	'	'	'
Entities Consolidated [Roll Forward]	'	'	'	'
Entities consolidated at beginning of period	'	'	'	1
Additional consolidated entities	0	0	0	'
Deconsolidated entities	0	0	0	'
Entities consolidated at end of period	1	1	1	1
Investments in Partnerships by Accounting Method [Abstract]	'	'	'	'
Total	13,618,000	13,782,000	'	15,540,000
VOE [Member]	'	'	'	'
Entities Consolidated [Roll Forward]	'	'	'	'
Entities consolidated at beginning of period	'	'	'	4
Additional consolidated entities	0	0	0	'
Deconsolidated entities	0	0	0	'
Entities consolidated at end of period	4	4	4	4
Prior to Consolidations [Member]	'	'	'	'
Investments in Partnerships by Accounting Method [Abstract]	'	'	'	'
Total	110,679,000	104,010,000	'	98,494,000
CFFs [Member]	'	'	'	'
Investments in Partnerships by Accounting Method [Abstract]	'	'	'	'
Total	4,684,000	3,253,000	'	6,517,000
CFFs [Member] \| Affiliated [Member]	'	'	'	'
Investments in Partnerships by Accounting Method [Abstract]	'	'	'	'
Fair value	24,094,000	23,146,000	'	25,253,000
Equity Method Investments	0	0	'	0
Total	24,094,000	23,146,000	'	25,253,000
CFFs [Member] \| VIE [Member]	'	'	'	'
Entities Consolidated [Roll Forward]	'	'	'	'
Entities consolidated at beginning of period	'	'	'	1
Additional consolidated entities	0	0	0	'
Deconsolidated entities	0	0	0	'
Entities consolidated at end of period	1	1	1	1
CFFs [Member] \| VOE [Member]	'	'	'	'
Entities Consolidated [Roll Forward]	'	'	'	'
Entities consolidated at beginning of period	'	'	'	2
Additional consolidated entities	0	0	0	'
Deconsolidated entities	0	0	0	'
Entities consolidated at end of period	2	2	2	2
Partnerships [Member]	'	'	'	'
Investments in Partnerships by Accounting Method [Abstract]	'	'	'	'
Total	-7,929,000	-9,511,000	'	-9,019,000
Partnerships [Member] \| Affiliated [Member]	'	'	'	'
Investments in Partnerships by Accounting Method [Abstract]	'	'	'	'
Fair value	0	0	'	0
Equity Method Investments	34,967,000	26,717,000	'	21,669,000
Total	34,967,000	26,717,000	'	21,669,000
Partnerships [Member] \| Unaffiliated [Member]	'	'	'	'
Investments in Partnerships by Accounting Method [Abstract]	'	'	'	'
Fair value	0	0	'	0
Equity Method Investments	6,611,000	6,080,000	'	6,509,000
Total	6,611,000	6,080,000	'	6,509,000
Partnerships [Member] \| VIE [Member]	'	'	'	'
Entities Consolidated [Roll Forward]	'	'	'	'
Entities consolidated at beginning of period	'	'	'	0
Additional consolidated entities	0	0	0	'
Deconsolidated entities	0	0	0	'
Entities consolidated at end of period	0	0	0	0
Partnerships [Member] \| VOE [Member]	'	'	'	'
Entities Consolidated [Roll Forward]	'	'	'	'
Entities consolidated at beginning of period	'	'	'	1
Additional consolidated entities	0	0	0	'
Deconsolidated entities	0	0	0	'
Entities consolidated at end of period	1	1	1	1
Offshore Funds [Member]	'	'	'	'
Investments in Partnerships by Accounting Method [Abstract]	'	'	'	'
Total	0	0	'	0
Offshore Funds [Member] \| Affiliated [Member]	'	'	'	'
Investments in Partnerships by Accounting Method [Abstract]	'	'	'	'
Fair value	0	0	'	0
Equity Method Investments	34,185,000	34,460,000	'	35,030,000
Total	34,185,000	34,460,000	'	35,030,000
Offshore Funds [Member] \| Unaffiliated [Member]	'	'	'	'
Investments in Partnerships by Accounting Method [Abstract]	'	'	'	'
Fair value	0	0	'	0
Equity Method Investments	7,577,000	7,349,000	'	7,531,000
Total	$7,577,000	$7,349,000	'	$7,531,000
Offshore Funds [Member] \| VIE [Member]	'	'	'	'
Entities Consolidated [Roll Forward]	'	'	'	'
Entities consolidated at beginning of period	'	'	'	0
Additional consolidated entities	0	0	0	'
Deconsolidated entities	0	0	0	'
Entities consolidated at end of period	0	0	0	0
Offshore Funds [Member] \| VOE [Member]	'	'	'	'
Entities Consolidated [Roll Forward]	'	'	'	'
Entities consolidated at beginning of period	'	'	'	1
Additional consolidated entities	0	0	0	'
Deconsolidated entities	0	0	0	'
Entities consolidated at end of period	1	1	1	1

Investments_in_Partnerships_Of3

Investments in Partnerships, Offshore Funds and Variable Interest Entities, Part II (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Assets [Abstract]	'	'	'	'	'	'
Cash and cash equivalents at end of period	$358,421	$245,411	$358,421	$245,411	$210,451	$190,608
Investments in securities	254,630	237,744	254,630	237,744	231,228	'
Investments in sponsored investment companies	39,520	43,688	39,520	43,688	44,042	'
Investments in partnerships	107,434	97,752	107,434	97,752	95,992	'
Receivable from brokers	79,885	43,854	79,885	43,854	49,461	'
Investment advisory fees receivable	31,155	31,151	31,155	31,151	51,506	'
Other asset	27,715	35,022	27,715	35,022	26,805	'
Total assets	898,760	734,622	898,760	734,622	709,485	'
Liabilities and Equity [Abstract]	'	'	'	'	'	'
Securities sold, not yet purchased	14,180	7,725	14,180	7,725	6,178	'
Accrued expense and other liabilities	205,320	165,139	205,320	165,139	124,463	'
Total Debt	111,941	117,347	111,941	117,347	111,911	'
Redeemable noncontrolling interests	56,086	5,765	56,086	5,765	6,751	'
Total equity	511,233	438,646	511,233	438,646	460,182	370,934
Total liabilities and equity	898,760	734,622	898,760	734,622	709,485	'
Condensed Consolidated Statements of Income [Abstract]	'	'	'	'	'	'
Total revenues	110,858	96,377	323,631	274,848	'	'
Total expenses	67,272	63,649	206,009	179,609	'	'
Operating income	43,586	32,728	117,622	95,239	'	'
Total other income, net	-9,989	17,991	5,025	34,991	'	'
Income before income taxes	33,597	50,719	122,647	130,230	'	'
Income tax provision	13,045	17,515	44,796	46,434	'	'
Net income	20,552	33,204	77,851	83,796	'	'
Net income/(loss) attributable to noncontrolling interests	-3,113	106	-2,718	260	'	'
Net income attributable to GAMCO Investors, Inc.'s shareholders	23,665	33,098	80,569	83,536	'	'
VIE [Member]	'	'	'	'	'	'
Assets [Abstract]	'	'	'	'	'	'
Cash and cash equivalents at end of period	1	1,082	1	1,082	0	'
Investments in partnerships	13,618	13,782	13,618	13,782	15,540	'
Liabilities and Equity [Abstract]	'	'	'	'	'	'
Accrued expense and other liabilities	-15	-1,088	-15	-1,088	-2,022	'
Redeemable noncontrolling interests	-962	0	-962	0	-1,120	'
GAMCO's net interests in consolidated VIEs	12,642	13,776	12,642	13,776	12,398	'
Prior to Consolidations [Member]	'	'	'	'	'	'
Assets [Abstract]	'	'	'	'	'	'
Cash and cash equivalents at end of period	358,316	243,995	358,316	243,995	209,667	'
Investments in securities	203,280	240,113	203,280	240,113	232,211	'
Investments in sponsored investment companies	39,520	43,677	39,520	43,677	44,033	'
Investments in partnerships	110,679	104,010	110,679	104,010	98,494	'
Receivable from brokers	31,388	26,981	31,388	26,981	35,151	'
Investment advisory fees receivable	31,221	31,241	31,221	31,241	52,509	'
Other asset	28,528	34,947	28,528	34,947	27,433	'
Total assets	802,932	724,964	802,932	724,964	699,498	'
Liabilities and Equity [Abstract]	'	'	'	'	'	'
Securities sold, not yet purchased	13,549	7,577	13,549	7,577	6,049	'
Accrued expense and other liabilities	166,209	161,394	166,209	161,394	121,356	'
Total Debt	111,941	117,347	111,941	117,347	111,911	'
Redeemable noncontrolling interests	0	0	0	0	0	'
Total equity	511,233	438,646	511,233	438,646	460,182	'
Total liabilities and equity	802,932	724,964	802,932	724,964	699,498	'
Condensed Consolidated Statements of Income [Abstract]	'	'	'	'	'	'
Total revenues	111,073	96,620	324,287	275,689	'	'
Total expenses	66,980	63,400	205,207	178,858	'	'
Operating income	44,093	33,220	119,080	96,831	'	'
Total other income, net	-7,462	17,404	6,172	33,125	'	'
Income before income taxes	36,631	50,624	125,252	129,956	'	'
Income tax provision	13,045	17,515	44,796	46,434	'	'
Net income	23,586	33,109	80,456	83,522	'	'
Net income/(loss) attributable to noncontrolling interests	-79	11	-113	-14	'	'
Net income attributable to GAMCO Investors, Inc.'s shareholders	23,665	33,098	80,569	83,536	'	'
CFFs [Member]	'	'	'	'	'	'
Assets [Abstract]	'	'	'	'	'	'
Cash and cash equivalents at end of period	7	1,082	7	1,082	450	'
Investments in securities	0	0	0	0	0	'
Investments in sponsored investment companies	0	0	0	0	0	'
Investments in partnerships	4,684	3,253	4,684	3,253	6,517	'
Receivable from brokers	0	0	0	0	0	'
Investment advisory fees receivable	17	-8	17	-8	-24	'
Other asset	24	0	24	0	-2,339	'
Total assets	4,732	4,327	4,732	4,327	4,604	'
Liabilities and Equity [Abstract]	'	'	'	'	'	'
Securities sold, not yet purchased	0	0	0	0	0	'
Accrued expense and other liabilities	71	1,146	71	1,146	165	'
Total Debt	0	0	0	0	0	'
Redeemable noncontrolling interests	4,661	3,181	4,661	3,181	4,439	'
Total equity	0	0	0	0	0	'
Total liabilities and equity	4,732	4,327	4,732	4,327	4,604	'
Condensed Consolidated Statements of Income [Abstract]	'	'	'	'	'	'
Total revenues	-7	-8	-21	-20	'	'
Total expenses	20	46	34	134	'	'
Operating income	-27	-54	-55	-154	'	'
Total other income, net	-186	94	20	228	'	'
Income before income taxes	-213	40	-35	74	'	'
Income tax provision	0	0	0	0	'	'
Net income	-213	40	-35	74	'	'
Net income/(loss) attributable to noncontrolling interests	-213	40	-35	74	'	'
Net income attributable to GAMCO Investors, Inc.'s shareholders	0	0	0	0	'	'
Partnerships [Member]	'	'	'	'	'	'
Assets [Abstract]	'	'	'	'	'	'
Cash and cash equivalents at end of period	98	334	98	334	334	'
Investments in securities	8,836	7,400	8,836	7,400	7,464	'
Investments in sponsored investment companies	0	11	0	11	9	'
Investments in partnerships	-7,929	-9,511	-7,929	-9,511	-9,019	'
Receivable from brokers	306	2,115	306	2,115	0	'
Investment advisory fees receivable	-1	-1	-1	-1	-14	'
Other asset	-1,000	0	-1,000	0	1,592	'
Total assets	310	348	310	348	366	'
Liabilities and Equity [Abstract]	'	'	'	'	'	'
Securities sold, not yet purchased	0	0	0	0	0	'
Accrued expense and other liabilities	31	32	31	32	29	'
Total Debt	0	0	0	0	0	'
Redeemable noncontrolling interests	279	316	279	316	337	'
Total equity	0	0	0	0	0	'
Total liabilities and equity	310	348	310	348	366	'
Condensed Consolidated Statements of Income [Abstract]	'	'	'	'	'	'
Total revenues	'	-1	-2	-2	'	'
Total expenses	12	11	38	36	'	'
Operating income	-12	-12	-40	-38	'	'
Total other income, net	-18	31	19	79	'	'
Income before income taxes	-30	19	-21	41	'	'
Income tax provision	0	0	0	0	'	'
Net income	-30	19	-21	41	'	'
Net income/(loss) attributable to noncontrolling interests	-30	19	-21	41	'	'
Net income attributable to GAMCO Investors, Inc.'s shareholders	0	0	0	0	'	'
Offshore Funds [Member]	'	'	'	'	'	'
Assets [Abstract]	'	'	'	'	'	'
Cash and cash equivalents at end of period	0	0	0	0	0	'
Investments in securities	42,514	-9,769	42,514	-9,769	-8,447	'
Investments in sponsored investment companies	0	0	0	0	0	'
Investments in partnerships	0	0	0	0	0	'
Receivable from brokers	48,191	14,758	48,191	14,758	14,310	'
Investment advisory fees receivable	-82	-81	-82	-81	-965	'
Other asset	163	75	163	75	119	'
Total assets	90,786	4,983	90,786	4,983	5,017	'
Liabilities and Equity [Abstract]	'	'	'	'	'	'
Securities sold, not yet purchased	631	148	631	148	129	'
Accrued expense and other liabilities	39,009	2,567	39,009	2,567	2,913	'
Total Debt	0	0	0	0	0	'
Redeemable noncontrolling interests	51,146	2,268	51,146	2,268	1,975	'
Total equity	0	0	0	0	0	'
Total liabilities and equity	90,786	4,983	90,786	4,983	5,017	'
Condensed Consolidated Statements of Income [Abstract]	'	'	'	'	'	'
Total revenues	-208	-234	-633	-819	'	'
Total expenses	260	192	730	581	'	'
Operating income	-468	-426	-1,363	-1,400	'	'
Total other income, net	-2,323	462	-1,186	1,559	'	'
Income before income taxes	-2,791	36	-2,549	159	'	'
Income tax provision	0	0	0	0	'	'
Net income	-2,791	36	-2,549	159	'	'
Net income/(loss) attributable to noncontrolling interests	-2,791	36	-2,549	159	'	'
Net income attributable to GAMCO Investors, Inc.'s shareholders	$0	$0	$0	$0	'	'

Income_Taxes_Details

Income Taxes (Details)	3 Months Ended		9 Months Ended
Income Taxes (Details)	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Taxes [Abstract]	'	'	'	'
Effective income tax rate (in hundredths)	38.80%	34.50%	36.50%	35.70%
Adjusted effective income tax rate (in hundredths)	35.50%	34.60%	35.70%	35.70%

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Basic:	'	'	'	'
Net income attributable to GAMCO Investors, Inc.'s shareholders	$23,665	$33,098	$80,569	$83,536
Weighted average shares outstanding (in shares)	25,296	25,625	25,385	25,682
Basic net income attributable to GAMCO Investors, Inc.'s shareholders per share (in dollars per share)	$0.94	$1.29	$3.17	$3.25
Diluted:	'	'	'	'
Net income attributable to GAMCO Investors, Inc.'s shareholders	$23,665	$33,098	$80,569	$83,536
Weighted average shares outstanding (in shares)	25,296	25,625	25,385	25,682
Dilutive stock options and restricted stock awards (in shares)	221	75	210	35
Total (in shares)	25,517	25,700	25,595	25,717
Diluted net income attributable to GAMCO Investors, Inc.'s shareholders per share (in dollars per share)	$0.93	$1.29	$3.15	$3.25

Debt_Details

Debt (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
	DebentureRepurchased	DebentureRepurchased	DebentureRepurchased	DebentureRepurchased	Dec. 31, 2013
Long-term debt [Abstract]	'	'	'	'	'
Carrying Value	$111,941,000	$117,347,000	$111,941,000	$117,347,000	$111,911,000
Fair Value Level 2	120,975,000	127,349,000	120,975,000	127,349,000	122,319,000
Loss on extinguishment of debt	'	'	-84,000	-137,000	'
5.5% Senior notes [Member]	'	'	'	'	'
Long-term debt [Abstract]	'	'	'	'	'
Debt maturity date	15-May-13	'	'	'	'
Stated interest rate (in hundredths)	5.50%	5.50%	5.50%	5.50%	5.50%
Debt maturity period	'10 years	'	'	'	'
Face value of debt	100,000,000	'	100,000,000	'	'
5.875% Senior notes [Member]	'	'	'	'	'
Long-term debt [Abstract]	'	'	'	'	'
Carrying Value	100,000,000	100,000,000	100,000,000	100,000,000	100,000,000
Debt maturity date	1-Jun-21	'	'	'	'
Stated interest rate (in hundredths)	5.88%	5.88%	5.88%	5.88%	5.88%
Debt maturity period	'10 years	'	'	'	'
Face value of debt	100,000,000	'	100,000,000	'	'
Percentage principal amount to offered to repurchase notes (in hundredths)	101.00%	'	'	'	'
5.875% Senior notes [Member] \| Level 2 [Member]	'	'	'	'	'
Long-term debt [Abstract]	'	'	'	'	'
Fair Value Level 2	108,200,000	108,000,000	108,200,000	108,000,000	108,500,000
0% Subordinated debentures [Member]	'	'	'	'	'
Long-term debt [Abstract]	'	'	'	'	'
Carrying Value	11,941,000	17,347,000	11,941,000	17,347,000	11,911,000
Debt maturity date	31-Dec-15	'	'	'	'
Stated interest rate (in hundredths)	0.00%	0.00%	0.00%	0.00%	0.00%
Effective interest rate (in hundredths)	7.45%	7.45%	7.45%	7.45%	7.45%
Debentures repurchased (face value)	103,200	0	716,200	1,200,000	'
Debentures repurchased (loss in dollars)	10,000	0	84,000	137,000	'
Debt maturity period	'5 years	'	'	'	'
Face value of debt	86,400,000	'	86,400,000	'	'
Dividends declared related to issuance of debt (in dollars per share)	$3.20	'	'	'	'
Par value of debentures	100,000,000	'	100,000,000	'	'
Debt redemption price as percentage of principal amount (in hundredths)	100.00%	'	100.00%	'	'
Number of debentures repurchased	1,032	0	7,165	11,974	'
Maximum amount of debt and equity to be issued under Shelf Registration	500,000,000	'	500,000,000	'	'
Amount available for debt and equity issuance under Shelf Registration	400,000,000	'	400,000,000	'	'
0% Subordinated debentures [Member] \| Level 2 [Member]	'	'	'	'	'
Long-term debt [Abstract]	'	'	'	'	'
Fair Value Level 2	$12,775,000	$19,349,000	$12,775,000	$19,349,000	$13,819,000

Stockholders_Equity_Details

Stockholders' Equity (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

183 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Feb. 05, 2013

Sep. 30, 2014

Mar. 31, 2013

Sep. 30, 2014

Jun. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

IncentivePlan

Q1 [Member]

Q2 [Member]

Q3 [Member]

Q4 [Member]

Restricted Stock [Member]

Quarterly Dividend [Member]

Class A [Member]

Class B [Member]

Award Made on September 15, 2014 [Member]

Award Made on January 9, 2014 [Member]

Award Made in August 2013 and September 2014 [Member]

VoteperShare

Stockholders' Equity [Abstract]

Shares outstanding (in shares)

25,900,000

26,000,000

25,900,000

26,000,000

26,100,000

6,599,982

6,701,930

6,592,649

19,279,260

19,384,174

19,424,174

Dividends Payable [Line Items]

Dividends declared (in dollars per share)

$0.06

$0.18

$0.16

$0.06

$0.05

Dividend payment date

30-Sep-14

24-Jun-14

25-Mar-14

24-Sep-13

25-Jun-13

26-Mar-13

Dividend record date

16-Sep-14

10-Jun-14

11-Mar-14

10-Sep-13

11-Jun-13

12-Mar-13

Voting Rights [Abstract]

Number of votes per share

Stock Award and Incentive Plan [Abstract]

Number of incentive plans

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Number of shares reserved for issuance under each plan, maximum (in shares)

1,500,000

Term of nonqualified stock options, maximum (in years)

'10 years

Percentage options granted under plans vest after three years (in hundredths)

75.00%

Percentage options granted under plan vest after four years (in hundredths)

100.00%

Vesting period for 75 percent of stock options

'3 years

Vesting period for 100 percent of stock options

'4 years

RSA shares outstanding (in shares)

639,750

427,700

639,750

427,700

566,950

Average weighted grant price (in dollars per share)

$65.12

$57.86

$63.93

Percentage stock based compensation expense recognize over three years vesting period (in hundredths)

30.00%

Percentage stock based compensation expense recognize over five years vesting period (in hundredths)

70.00%

Percentage stock based compensation expense recognize each year over years four through ten vesting period (in hundredths)

10.00%

Vesting period for recognition of 30 percent of stock based compensation expense (in years)

'3 years

Vesting period for recognition of 70 percent of stock based compensation expense (in years)

'5 years

RSAs granted (in shares)

2,100

83,500

Restricted stock award shares approved grant date fair value (in dollars per share)

$81.99

$73.41

Actual and projected stock based compensation expense for RSA shares and options [Abstract]

Actual stock based compensation expense

$1,785,000

$741,000

$5,182,000

$770,000

$15,000

Employee Service Share Based Compensation Nonvested Awards Projected Compensation Cost Year Eleven

32,000

12,000

8,000

Projected stock based compensation expense 2013

2,072,000

15,000

741,000

1,301,000

Projected stock based compensation expense 2014

7,147,000

1,700,000

1,697,000

1,785,000

1,965,000

Projected stock based compensation expense 2015

7,845,000

1,962,000

1,961,000

Employee Service Share Based Compensation Nonvested Awards Projected Compensation Cost Year Three

6,875,000

1,961,000

1,607,000

1,346,000

Employee Service Share Based Compensation Nonvested Awards Projected Compensation Cost Year Ten

202,000

76,000

38,000

12,000

Employee Service Share Based Compensation Nonvested Awards Projected Compensation Cost Year Six

1,541,000

429,000

364,000

319,000

Employee Service Share Based Compensation Nonvested Awards Projected Compensation Cost Year Seven

1,129,000

319,000

264,000

227,000

Employee Service Share Based Compensation Nonvested Awards Projected Compensation Cost Year Nine

472,000

146,000

104,000

76,000

Employee Service Share Based Compensation Nonvested Awards Projected Compensation Cost Year Four

4,292,000

1,171,000

1,040,000

910,000

Employee Service Share Based Compensation Nonvested Awards Projected Compensation Cost Year Five

3,303,000

908,000

828,000

659,000

Employee Service Share Based Compensation Nonvested Awards Projected Compensation Cost Year Eight

779,000

227,000

179,000

146,000

Compensation cost related to non-vested restricted stock awards and options not yet recognized

28,400,000

Stock options exercised (in shares)

40,000

2,623

Proceeds from exercise of stock options

1,637,000

76,000

Tax benefit from exercise of stock options

$349,000

$16,000

Stock Repurchase Program [Abstract]

Incremental Class A shares authorized to buyback (in shares)

500,000

Shares repurchased (in shares)

94,942

40,857

319,662

159,259

9,031,255

Average price per share of repurchased shares (in dollars per share)

$77.67

$72.40

$78.43

$57.97

$43.53

Share available under program to repurchase (in shares)

603,553

Goodwill_and_Identifiable_Inta1

Goodwill and Identifiable Intangible Assets (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Goodwill [Line Items]	'	'	'
Goodwill	$3.50	'	'
Percentage interest owned in subsidiary (in hundredths)	94.00%	'	'
Identifiable Intangible Asset	1.9	1.9	1.9
Subsidiary [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Goodwill	3.3	'	'
G.distributors, LLC [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Goodwill	$0.20	'	'

ShareholderDesignated_Contribu1

Shareholder-Designated Contribution Plan (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2014	Sep. 30, 2013
Shareholder-Designated Contribution Plan [Abstract]	'	'	'	'
Shareholder-designated contribution	2	'	'	'
Shareholder-designated contribution, diluted per share (in dollars per share)	$0	$0.12	'	$0.12
Initial contribution per registered share to Shareholder-designated charitable contribution program (in dollars per share)	'	'	$0.25	'
Expected expense related to Shareholder-designated charitable contribution program	'	$5,300	$134	$5,313

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	3 Months Ended							9 Months Ended		183 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2014	Feb. 05, 2013
Subsequent Event [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Average price per share of repurchased shares (in dollars per share)	$77.67	'	'	'	$72.40	'	'	$78.43	$57.97	$43.53	'
Shares available to be repurchased (in shares)	'	'	'	'	'	'	'	'	'	'	500,000
Shares authorized for issuance (in shares)	1,500,000	'	'	'	'	'	'	1,500,000	'	'	'
Dividends declared (in dollars per share)	$0.06	'	'	'	$0.06	'	'	$0.18	$0.16	'	'
Dividends payable date	30-Sep-14	24-Jun-14	25-Mar-14	'	24-Sep-13	25-Jun-13	26-Mar-13	'	'	'	'
Dividends record date	16-Sep-14	10-Jun-14	11-Mar-14	'	10-Sep-13	11-Jun-13	12-Mar-13	'	'	'	'
Expected expense related to Shareholder-designated charitable contribution program	'	'	'	$5,300	'	'	'	$134	$5,313	'	'
Percentage stock based compensation expense recognize over three years vesting period (in hundredths)	30.00%	'	'	'	'	'	'	'	'	'	'
Stock based compensation expense recognize over five years vesting period	70.00%	'	'	'	'	'	'	'	'	'	'
Vesting period for recognition of 30 percent of stock based compensation expense	'3 years	'	'	'	'	'	'	'	'	'	'
Vesting period for recognition of 70 percent of stock based compensation expense	'5 years	'	'	'	'	'	'	'	'	'	'
Restricted Stock [Member]	'	'	'	'	'	'	'	'	'	'	'
Subsequent Event [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Percentage stock based compensation expense recognize over three years vesting period (in hundredths)	30.00%	'	'	'	'	'	'	'	'	'	'
Stock based compensation expense recognize over five years vesting period	70.00%	'	'	'	'	'	'	'	'	'	'
Vesting period for recognition of 30 percent of stock based compensation expense	'3 years	'	'	'	'	'	'	'	'	'	'
Vesting period for recognition of 70 percent of stock based compensation expense	'5 years	'	'	'	'	'	'	'	'	'	'
Subsequent Event [Member]	'	'	'	'	'	'	'	'	'	'	'
Subsequent Event [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Stock repurchased (in shares)	59,539	'	'	'	'	'	'	'	'	'	'
Average price per share of repurchased shares (in dollars per share)	$77.42	'	'	'	'	'	'	'	'	'	'
Special dividend declared (in dollars per share)	$0.25	'	'	'	'	'	'	'	'	'	'
Quarterly Dividend [Member]	'	'	'	'	'	'	'	'	'	'	'
Subsequent Event [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Dividends declared (in dollars per share)	$0.06	0.06	0.06	'	$0.06	0.05	0.05	'	'	'	'
Quarterly Dividend [Member] \| Subsequent Event [Member]	'	'	'	'	'	'	'	'	'	'	'
Subsequent Event [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Dividends declared (in dollars per share)	$0.07	'	'	'	'	'	'	'	'	'	'
Dividends declared date	6-Nov-14	'	'	'	'	'	'	'	'	'	'
Dividends payable date	30-Dec-14	'	'	'	'	'	'	'	'	'	'
Dividends record date	16-Dec-14	'	'	'	'	'	'	'	'	'	'