Manning & Napier (MN) 10-Q 10 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Nov. 06, 2014	Nov. 06, 2014
		Class A common stock	Class B common stock
Entity Information [Line Items]	'	'	'
Document Type	'10-Q	'	'
Amendment Flag	'false	'	'
Document Period End Date	30-Sep-14	'	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'Q3	'	'
Trading Symbol	'MN	'	'
Entity Registrant Name	'Manning & Napier, Inc.	'	'
Entity Central Index Key	'0001524223	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	13,705,419	1,000

Consolidated_Statements_of_Fin

Consolidated Statements of Financial Condition (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'	'
Cash and cash equivalents	$118,857	$125,250
Accounts receivable	24,322	24,140
Accounts receivablebManning & Napier Fund, Inc.	17,089	16,461
Due from broker	5,567	5,816
Investment securities, at fair value	25,782	21,321
Prepaid expenses and other assets	7,562	8,028
Total current assets	199,179	201,016
Property and equipment, net	6,650	5,424
Net deferred tax assets, non-current	43,839	46,164
Other long-term assets	1,618	0
Total assets	251,286	252,604
Liabilities	'	'
Accounts payable	2,222	1,476
Accrued expenses and other liabilities	43,729	49,813
Deferred revenue	13,955	12,007
Total current liabilities	59,906	63,296
Other long-term liabilities	2,478	1,444
Amounts payable under tax receivable agreement, non-current	39,126	42,075
Total liabilities	101,510	106,815
Commitments and contingencies (Note 10)	'	'
Shareholdersb equity	'	'
Additional paid-in capital	213,070	208,988
Retained deficit	-45,905	-40,544
Accumulated other comprehensive income	0	-1
Total shareholdersb equity	167,302	168,579
Noncontrolling interests	-17,526	-22,790
Total shareholdersb equity and noncontrolling interests	149,776	145,789
Total liabilities, shareholdersb equity and noncontrolling interests	251,286	252,604
Class A common stock	'	'
Shareholdersb equity	'	'
Common stock	137	136
Class B common stock	'	'
Shareholdersb equity	'	'
Common stock	$0	$0

Consolidated_Statements_of_Fin1

Consolidated Statements of Financial Condition (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Class A common stock	'	'
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	13,705,419	13,634,246
Common stock, shares outstanding	13,705,419	13,634,246
Class B common stock	'	'
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	2,000	2,000
Common stock, shares issued	1,000	1,000
Common stock, shares outstanding	1,000	1,000

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues	'	'	'	'
Investment management services revenue	$104,795	$94,647	$307,129	$277,876
Expenses	'	'	'	'
Compensation and related costs	51,499	44,935	159,457	140,739
Distribution, servicing and custody expenses	19,921	17,459	58,325	49,869
Other operating costs	9,365	7,706	25,867	23,235
Total operating expenses	80,785	70,100	243,649	213,843
Operating income	24,010	24,547	63,480	64,033
Non-operating income (loss)	'	'	'	'
Interest expense	-14	-14	-21	-20
Interest and dividend income	144	100	553	234
Change in liability under tax receivable agreement	-65	-118	2,045	-118
Net (losses) gains on investments	-1,279	500	-446	452
Total non-operating income (loss)	-1,214	468	2,131	548
Income before provision for income taxes	22,796	25,015	65,611	64,581
Provision for income taxes	2,976	2,222	10,412	6,799
Net income attributable to controlling and noncontrolling interests	19,820	22,793	55,199	57,782
Less: net income attributable to noncontrolling interests	19,392	21,479	53,991	55,864
Net income attributable to Manning & Napier, Inc.	$428	$1,314	$1,208	$1,918
Net income per share available to Class A common stock	'	'	'	'
Basic (in dollars per share)	$0.03	$0.10	$0.09	$0.14
Diluted (in dollars per share)	$0.03	$0.10	$0.09	$0.14
Weighted average shares of Class A common stock outstanding	'	'	'	'
Basic (in shares)	13,705,134	13,634,246	13,669,391	13,612,289
Diluted (in shares)	13,930,020	13,690,641	13,822,402	13,673,499
Cash dividends declared per share of Class A common stock	$0.16	$0.16	$0.48	$0.48

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income attributable to controlling and noncontrolling interests	$19,820	$22,793	$55,199	$57,782
Reclassification adjustment for realized losses on investment securities included in net income	0	0	1	0
Comprehensive income	19,820	22,793	55,200	57,782
Less: Comprehensive income attributable to noncontrolling interests	19,392	21,479	53,992	55,864
Comprehensive income attributable to Manning & Napier, Inc.	$428	$1,314	$1,208	$1,918

Consolidated_Statement_of_Shar

Consolidated Statement of Shareholders' Equity (USD $)	Total	Common Stock	Common Stock	Additional Paid in Capital	Retained Deficit	Accumulated Other Comprehensive Income (Loss)	Non Controlling Interest
In Thousands, except Share data, unless otherwise specified		Class A common stock	Class B common stock
Beginning balance at Dec. 31, 2013	$145,789	$136	$0	$208,988	($40,544)	($1)	($22,790)
Beginning balance, Shares at Dec. 31, 2013	'	13,634,246	1,000	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'
Net income	55,199	'	'	'	1,208	'	53,991
Distributions to noncontrolling interests	-80,602	'	'	'	'	'	-80,602
Net changes in unrealized investment securities gains or losses	1	'	'	'	'	1	'
Common stock issued under equity compensation plan	'	1	'	-1	'	'	'
Common stock issued under equity compensation plan (shares)	'	71,173	'	'	'	'	'
Equity-based compensation	68,141	'	'	9,735	'	'	58,406
Dividends declared on Class A common stock - $0.48 per share	-6,569	'	'	'	-6,569	'	'
Purchase of Class A units of Manning & Napier Group, LLC held by noncontrolling interests (Note 4)	-32,183	'	'	-5,652	'	'	-26,531
Ending balance at Sep. 30, 2014	$149,776	$137	$0	$213,070	($45,905)	$0	($17,526)
Ending balance, Shares at Sep. 30, 2014	'	13,705,419	1,000	'	'	'	'

Consolidated_Statement_of_Shar1

Consolidated Statement of Shareholders' Equity (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Cash dividends declared per share of Class A common stock	$0.16	$0.16	$0.48	$0.48
Class A common stock	'	'	'	'
Cash dividends declared per share of Class A common stock	'	'	$0.48	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:	'	'
Net income	$55,199	$57,782
Adjustment to reconcile net income to net cash provided by operating activities:	'	'
Equity-based compensation	68,141	63,762
Depreciation and amortization	1,643	1,419
Change in amounts payable under tax receivable agreement	-2,045	118
Net losses (gains) on investment securities	446	-452
Deferred income taxes	3,743	1,911
(Increase) decrease in operating assets and increase (decrease) in operating liabilities:	'	'
Accounts receivable	-100	287
Accounts receivablebManning & Napier Fund, Inc.	-627	-948
Prepaid expenses and other assets	507	1,618
Accounts payable	746	-334
Accrued expenses and other liabilities	-7,532	-7,681
Deferred revenue	1,948	2,109
Other long-term liabilities	1,111	0
Net cash provided by operating activities	123,180	119,591
Cash flows from investing activities:	'	'
Purchase of property and equipment	-2,297	-1,286
Sale of investments	7,883	7,922
Purchase of investments	-12,855	-7,369
Due from broker	0	-5,850
Acquisitions, net of cash received	-2,068	0
Proceeds from maturity of investments	605	0
Net cash used in investing activities	-8,732	-6,583
Cash flows from financing activities:	'	'
Distributions to noncontrolling interests	-80,602	-80,959
Dividends paid on Class A common stock	-7,648	-6,528
Payment of capital lease obligations	-190	-138
Purchase of Class A units of Manning & Napier Group, LLC	-32,401	-7,413
Net cash used in financing activities	-120,841	-95,038
Net (decrease) increase in cash and cash equivalents	-6,393	17,970
Cash and cash equivalents:	'	'
Beginning of period	125,250	108,324
End of period	$118,857	$126,294

Organization_and_Nature_of_the

Organization and Nature of the Business	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Organization and Nature of the Business	'
	Organization and Nature of the Business
	Manning & Napier, Inc. ("Manning & Napier", or the "Company") provides a broad range of investment solutions, as well as a variety of consultative services that complement its investment process. Founded in 1970, the Company offers equity, fixed income and alternative strategies, as well as a range of blended asset portfolios, such as life cycle funds. Headquartered in Fairport, New York, the Company serves a diversified client base of high net worth individuals and institutions, including 401(k) plans, pension plans, Taft-Hartley plans, endowments and foundations.
	The Company is the sole managing member of Manning & Napier Group, LLC (together with its subsidiaries, "Manning & Napier Group"), a holding company for the investment management businesses conducted by its operating subsidiaries. The diagram below depicts the Company's organization structure as of September 30, 2014.
	-1	The operating subsidiaries of Manning & Napier Group include Manning & Napier Advisors, LLC ("MNA"), Exeter Advisors I, LLC, Manning & Napier Alternative Opportunities, LLC, Perspective Partners LLC, Manning & Napier Information Services, LLC, Manning & Napier Benefits, LLC, Manning & Napier Investor Services, Inc. and Exeter Trust Company.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	Summary of Significant Accounting Policies
	Critical Accounting Policies
	There have been no significant changes in our critical accounting policies and estimates from those that were disclosed in our Annual Report on Form 10-K for the year ended December 31, 2013.
	The Company believes that the disclosures herein are adequate so that the information presented is not misleading; however, these financial statements should be read in conjunction with the financial statements and the notes thereto in our Annual Report on Form 10-K for the year ended December 31, 2013. The financial data for the interim periods may not necessarily be indicative of results for future interim periods or for the full year.
	Basis of Presentation
	The accompanying unaudited consolidated financial statements were prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and related rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial reporting and include all adjustments, consisting only of normal recurring adjustments which are, in the opinion of management, necessary for a fair statement of the results for the interim period.
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates or assumptions that affect the reported amounts and disclosures in the consolidated financial statements. Actual results could differ from these estimates or assumptions.
	Principles of Consolidation
	As of September 30, 2014, Manning & Napier holds an approximately 14.5% economic interest in Manning & Napier Group but, as managing member, controls all of the business and affairs of Manning & Napier Group. As a result, the Company consolidates the financial results of Manning & Napier Group and records a noncontrolling interest on its consolidated statements of financial condition with respect to the remaining economic interest in Manning & Napier Group held by Manning & Napier Group Holdings, LLC (“M&N Group Holdings”) and Manning & Napier Capital Company, LLC (“MNCC”).
	All material intercompany transactions have have been eliminated in consolidation.
	In accordance with Accounting Standards Codification ("ASU") 2009-17, Consolidation (Topic 810) – Improvements to Financial Reporting by Enterprises Involved with Variable Interest Entities, the determination of whether a company is required to consolidate an entity is based on, among other things, an entity’s purpose and design, a company’s ability to direct the activities of the entity that most significantly impact the entity’s economic performance, and whether a company is obligated to absorb losses or receive benefits that could potentially be significant to the entity. The standard also requires ongoing assessments of whether a company is the primary beneficiary of a variable interest entity (“VIE”). In January 2010, the FASB deferred portions of ASU 2009-17 that relate to certain investment companies. We determined that all entities for which we are investment manager and/or general partner, qualify for the scope deferral and will continue to be assessed for consolidation under prior accounting guidance for consolidation of VIEs.
	We provide seed capital to our investment teams to develop new products and services for our clients. Our original seed investment typically represents all or a majority of the equity investment in the new product. We evaluate our seed investments on a regular basis and consolidate such investments as required pursuant to U.S. GAAP.
	MNA serves as the investment adviser for Manning & Napier Fund Inc. series of mutual funds (the “Fund”) and the Exeter Collective Investment Trust (“CIT”). The Fund and CIT are legal entities, the business and affairs of which are managed by their respective boards of directors. As a result, each of these entities is a voting interest entity (“VOE”). While the Company holds, in limited cases, direct investments in a fund (which are made on the same terms as are available to other investors and do not represent a majority voting interest in any fund), the Company does not have a controlling financial interest or a majority voting interest and, as such, does not consolidate these entities.
	On May 22, 2014 MNA became the investment advisor of the MN Xenon Managed Futures Offshore Fund, Ltd. ("Offshore Fund") and the General Partner of the MN Xenon Managed Futures Fund LP ("LP Fund") (Note 3). The Offshore Fund is a legal entity that is subject to oversight by its board of directors. Equity holders maintain the right to attend and vote at all general meetings and therefore the voting interest model is applied to determine consolidation. Since the Company does not have any direct investments or control in the Offshore Fund, it does not consolidate this entity.
	The Company has determined that the LP Fund is not a VIE as (a) the the entity has enough equity to finance its activities without additional financial support and (b) the limited partners, as a group, have the ability to remove the general partner ("kick-out rights") with a majority vote of partnership percentage. Under the voting interest model, the Company does not consolidate VOEs in which the presumption of control by the general partner is overcome by kick-out rights.
	Cash and Cash Equivalents
	The Company considers all highly liquid investments with original maturities of three months or less to be cash equivalents. Cash and cash equivalents are primarily held in operating accounts at major financial institutions and also in money market securities. Cash equivalents are stated at cost, which approximates market value due to the short-term maturity of these investments. The fair value of cash equivalents have been classified as Level 1 in accordance with the fair value hierarchy.
	Due from broker
	The Company conducts business with brokers for certain of its investment activities. The due from broker balance on the consolidated statements of financial condition represents cash held by brokers as collateral for managed futures and cash at brokers as collateral for securities sold, not yet purchased.
	Investment Securities
	Investment securities are classified as either trading or available-for-sale and are carried at fair value. Fair value is determined based on quoted market prices in active markets for identical or similar instruments.
	Investment securities classified as trading consist of equity securities, fixed income securities, and investments in mutual funds for which the Company provides advisory services. Realized and unrealized gains and losses on trading securities are recorded in net gains (losses) on investments in the consolidated statements of operations. Realized gains and losses on sales of trading securities are computed on a specific identification basis. At September 30, 2014, trading securities consist solely of investments held by the Company to provide initial cash seeding for product development purposes.
	Securities sold, not yet purchased are recorded on the trade date, are stated at fair value and represent obligations of the Company to purchase the securities at prevailing market rates. Therefore, the future satisfaction of such obligations may be for an amount greater or less than the amounts recorded on the consolidated statements of financial condition. The ultimate gains or losses recognized are dependent upon the prices at which these securities are purchased to settle the obligations under the sales commitments. Realized gains and losses from covers of securities sold, not yet purchased transactions are included in net gain (loss) from investments on the consolidated statements of operations. Securities sold, not yet purchased are stated at fair value in accrued expenses and other liabilities in the consolidated statements of financial condition, with any unrealized gains or losses reported in current period earnings in net gain (loss) from investments on the consolidated statements of operations.
	Operating Segments
	The Company operates in one segment, the investment management industry. The Company primarily provides investment management services to separately managed accounts, mutual funds and collective investment trust funds. Management assesses the financial performance of these vehicles on a combined basis.
	Revenue
	The majority of the Company’s revenues are based on fees charged to manage customers’ portfolios. Investment management fees are generally computed as a percentage of assets under management ("AUM") and recognized as earned. Fees for providing investment advisory services are computed and billed in accordance with the provisions of the applicable investment management agreements. For the Company’s separately managed accounts, clients either pay investment management fees in advance, typically for a semi-annual or quarterly period, or in arrears, typically for a monthly or quarterly period. When investment management fees are paid in advance, the Company defers the revenue and recognizes it over the applicable period. When investment management fees are paid in arrears, the Company estimates revenues based on AUM market values as of the most recent month end date, and adjusts to actual when billed. For mutual funds and collective investment trust vehicles, the Company’s fees are calculated and earned daily based on AUM.
	The Company has agreements with third parties who provide distribution and administrative services for its mutual funds, collective investment trusts and certain separately managed accounts. Third party agreements are evaluated against Financial Accounting Standards Board ("FASB") ASC 605-45 Revenue Recognition - Principal Agent Considerations to determine whether revenue should be reported gross or net of payments to third-party service providers. In management's judgment there are various indicators that support gross revenue reporting, the most notable being the Company acts as primary obligor and therefore principal service provider. Based on this evaluation, investment management service revenue is recorded gross of distribution and administrative fees paid to third parties.
	Advisory Agreements
	The Company derives significant revenue from its role as advisor to the Fund and the CIT.
	The Company's investments in the Fund amounted to approximately $1.7 million as of September 30, 2014 and December 31, 2013.
	Fees earned for advisory related services provided to the Fund and CIT investment vehicles were approximately $56.5 million and $164.6 million for the three and nine months ended September 30, 2014, respectively, and $50.0 million and $144.8 million for the three and nine months ended September 30, 2013, respectively. These amounts represent greater than 10% of the Company's revenue in each respective period.
	Recent Accounting Pronouncements
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes existing accounting standards for revenue recognition and creates a single framework. The new guidance will be effective on January 1, 2017 and requires either a retrospective or a modified retrospective approach to adoption. Early application is prohibited. The Company is currently evaluating its transition method and the potential impact on its consolidated financial statements.

Acquisition

Acquisition	9 Months Ended
	Sep. 30, 2014
Business Combinations [Abstract]	'
Acquisitions	'
	Acquisitions
	On May 22, 2014, the Company acquired the operating assets of 2100 Xenon LLC ("Xenon"), an alternative investment manager specializing in managed futures and global macro strategies for institutional and individual clients.
	The acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805 "Business Combinations." Accordingly, goodwill was measured as the excess of the acquisition-date fair value of the consideration transferred over the amount of acquisition-date identifiable assets acquired net of assumed liabilities. The Company recorded $0.8 million of intangible assets and $0.9 million of goodwill, all of which are deductible for U.S. tax purposes, in other long term assets in the consolidated statement of financial condition. In management's opinion, the goodwill represents the value expected from the synergies created through the integration of Xenon's operations, as well as the reputation and expertise of Xenon in the asset management industry.
	The results of operations of Xenon have been included in the Company's results prospectively from the date of acquisition.

Noncontrolling_Interests

Noncontrolling Interests	9 Months Ended
	Sep. 30, 2014
Noncontrolling Interest [Abstract]	'
Noncontrolling Interests	'
	Noncontrolling Interests
	Manning & Napier holds an approximately 14.5% economic interest in Manning & Napier Group, but as managing member controls all of the business and affairs of Manning & Napier Group. As a result, the Company consolidates the financial results of Manning & Napier Group and records a noncontrolling interest on its consolidated statement of financial condition with respect to the remaining approximately 85.5% aggregate economic interest in Manning & Napier Group held by M&N Group Holdings and MNCC. Net income attributable to noncontrolling interests on the statements of operations represents the portion of earnings or loss attributable to the economic interest in Manning & Napier Group held by the noncontrolling interests.
	The following provides a reconciliation from “Income before provision for income taxes” to “Net income attributable to Manning & Napier, Inc.”:
			Three months ended September 30,						Nine months ended September 30,
			2014			2013			2014			2013
			(in thousands)
	Income before provision for income taxes		$	22,796		$	25,015		$	65,611		$	64,581
	Less: gain (loss) before provision for income taxes of Manning & Napier, Inc. (a)		(87		)	(270		)	2,015			(833		)
	Income before provision for income taxes, as adjusted		22,883			25,285			63,596			65,414
	Controlling interest percentage (b)		14.5		%	13.9		%	14.3		%	13.9		%
	Net income attributable to controlling interest		3,318			3,526			9,086			9,100
	Plus: gain (loss) before provision for income taxes of Manning & Napier, Inc. (a)		(87		)	(270		)	2,015			(833		)
	Income before income taxes attributable to Manning & Napier, Inc.		3,231			3,256			11,101			8,267
	Less: provision for income taxes of Manning & Napier, Inc. (c)		2,803			1,942			9,893			6,349
	Net income attributable to Manning & Napier, Inc.		$	428		$	1,314		$	1,208		$	1,918
	________________________
	a)	Manning & Napier, Inc. incurs certain gains or expenses that are only attributable to it and are therefore excluded from the net income attributable to noncontrolling interests.
	b)	Income before provision for income taxes is allocated to the controlling interest based on the percentage of units of Manning & Napier Group held by Manning & Napier, Inc. The amount represents the Company's weighted ownership of Manning & Napier Group for the respective periods.
	c)	The consolidated provision for income taxes is equal to the sum of (i) the provision for income taxes for entities other than Manning & Napier, Inc. and (ii) the provision for income taxes of Manning & Napier, Inc. which includes all U.S. federal and state income taxes. The consolidated provision for income taxes totaled approximately $3.0 million and $2.2 million for the three months ended September 30, 2014 and 2013, respectively. The consolidated provision for income taxes totaled approximately $10.4 million and $6.8 million for the nine months ended September 30, 2014 and 2013, respectively.
	Noncontrolling interests as of and for the nine months ended September 30, 2014 and 2013, included the following amounts:
			Nine months ended September 30,
			2014			2013
			(in thousands)
	Balance, beginning of period		$	(22,790	)	$	(41,115	)
	Net income attributable to noncontrolling interests		53,991			55,864
	Distributions to noncontrolling interests		(80,602		)	(80,959		)
	Equity-based compensation		58,406			54,892
	Purchase of Class A units of Manning & Napier Group, LLC held by noncontrolling interests		(26,531		)	(6,493		)
	Balance, end of period		$	(17,526	)	$	(17,811	)
	On March 31, 2014, M&N Group Holdings and MNCC exchanged a total of 2,098,837 Class A units of Manning & Napier Group for approximately $30.3 million in cash. Subsequent to the exchange, the Class A units were retired. In addition, on May 29, 2014, M&N Group Holdings exchanged a total of 187,848 Class A units of Manning & Napier Group. In connection with the exchange, Manning & Napier issued 56,000 shares of Class A common stock and paid approximately $2.1 million in cash for the remaining 131,848 units. The exchange of 187,848 Class A units on May 29, 2014 gave rise to a deferred tax asset of approximately $1.4 million and a corresponding liability of approximately $1.2 million pursuant to the tax receivable agreement ("TRA") which the Company entered into in connection with the Company's 2011 initial public offering ("IPO"). The initial estimate for the deferred tax asset, net of the liability under the TRA is recorded within paid-in capital.
	As a result of the aforementioned transactions, the Company's economic ownership interest in Manning & Napier Group increased to 14.5%. As of September 30, 2014, M&N Group Holdings and MNCC may exchange an aggregate of 73,574,338 units of Manning & Napier Group for shares of the Company's Class A common stock pursuant to the terms of the exchange agreement entered into at the time of the Company's 2011 IPO.
	During the nine months ended September 30, 2014 and 2013, the Company distributed approximately $80.6 million and $81.0 million, respectively, to noncontrolling interests. None of these distributions are payments pursuant to the TRA.
	At September 30, 2014 and December 31, 2013, the Company had recorded a liability of $41.2 million and $44.0 million, respectively, representing the estimated payments due to the selling unit holders under the TRA. Of these amounts, $2.1 million and $2.0 million were included in accrued expenses and other liabilities at September 30, 2014 and December 31, 2013, respectively. The Company made payments pursuant to the TRA of $2.0 million during the nine months ended September 30, 2014 and 2013. The Company recorded an adjustment of $2.0 million to the amounts payable under the TRA during the nine months ended September 30, 2014, driven primarily by enacted changes in tax laws.
	Obligations pursuant to the TRA are obligations of Manning & Napier. They do not impact the noncontrolling interests. These obligations are not income tax obligations. Furthermore, the TRA has no impact on the allocation of the provision for income taxes to the Company’s net income.

Investment_Securities

Investment Securities	9 Months Ended
	Sep. 30, 2014
Investments [Abstract]	'
Investment Securities	'
	Investment Securities
	The following table represents the Company’s investment securities holdings as of September 30, 2014 and December 31, 2013:
		30-Sep-14
		Cost		Unrealized		Unrealized		Fair
				Gains		Losses		Value
		(in thousands)
	Available-for-sale securities
	U.S. Treasury note (0.25%, 10/31/2015)	$	2,107	$	—	$	—	$	2,107
	Trading securities
	Equity securities							12,055
	Fixed income securities							9,911
	Managed mutual funds							1,709
								23,675
	Total investment securities							$	25,782
		31-Dec-13
		Cost		Unrealized		Unrealized		Fair
				Gains		Losses		Value
		(in thousands)
	Available-for-sale securities
	U.S. Treasury note (0.25%, 8/31/2014)	$	505	$	—	$	—	$	505
	U.S. Treasury note (1.75%, 1/31/2014)	102		—		—		102
		607		—		—		607
	Trading securities
	Equity securities							11,961
	Fixed income securities							7,085
	Managed mutual funds							1,668
								20,714
	Total investment securities							$	21,321
	Investment securities are classified as either trading or available-for-sale and are carried at fair value. Fair value is determined based on quoted market prices in active markets for identical or similar instruments.
	Investment securities classified as trading consist of equity securities, fixed income securities and investments in mutual funds for which the Company provides advisory services. At September 30, 2014 and December 31, 2013, trading securities consist solely of investments held by the Company to provide initial cash seeding for product development purposes. The Company recognized approximately $0.9 million of net unrealized losses and $0.5 million of net unrealized gains related to investments classified as trading during the nine months ended September 30, 2014 and 2013, respectively.
	Investment securities classified as available-for-sale consist of U.S. Treasury notes for compliance with certain regulatory requirements. As of September 30, 2014 and December 31, 2013, $0.6 million of these securities is considered restricted. The Company periodically reviews each individual security position that has an unrealized loss, or impairment, to determine if that impairment is other-than-temporary. No other-than-temporary impairment charges have been recognized by the Company during the nine months ended September 30, 2014 and 2013.

Derivative_Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Instruments	'
	Derivative Instruments
	The Company enters into futures contracts for product development purposes. Futures are commitments either to purchase or sell a designated financial instrument, currency, commodity or an index at a specified future date for a specified price and may be settled in cash or another financial asset. Upon entering into a futures contract, the Company is required to pledge to the broker an amount of cash, which is reported in due from broker within the consolidated statements of financial condition. Futures contracts have little credit risk because the counterparties are futures exchanges. The Company does not hold any derivatives in a formal hedge relationship under ASC 815-10, Derivatives and Hedging.
	The following tables present the notional value and fair value as of September 30, 2014 and December 31, 2013 for derivative instruments not designated as hedging instruments:
			September 30, 2014
							Fair Value
			Notional Value				Asset Derivative			Liability Derivative
			(in thousands)
	Interest rate futures		$	126,640			$	71		$	(72	)
	Index futures		2,942				—			(58		)
	Commodity futures		2,686				49			(82		)
	Currency futures		6,455				56			(51		)
	Total derivatives		$	138,723			$	176		$	(263	)
			December 31, 2013
							Fair Value
			Notional Value				Asset Derivative			Liability Derivative
			(in thousands)
	Interest rate futures		$	123,164			$	217		$	(66	)
	Total derivatives		$	123,164			$	217		$	(66	)
	As of September 30, 2014 and December 31, 2013, the derivative assets and liabilities are measured at fair value and are included in due from broker in the consolidated statements of financial condition, with changes in the fair value reported in net gains (losses) on investments in the consolidated statements of operations. For the nine months ended September 30, 2014, the average volume of derivative activity (measured in terms of notional value) was approximately $130.1 million. The following table presents the gains (losses) recognized in net gains (losses) on investments in the consolidated statements of operations for the three and nine months ended September 30, 2014 and 2013:
		Three months ended September 30,							Nine months ended September 30,
		2014				2013			2014				2013
		(in thousands)
	Interest rate futures	$	12			$	(13	)	$	(544	)		$	(13	)
	Index futures	(54		)		—			15				—
	Commodity futures	50				—			(10		)		—
	Currency futures	(58		)		—			(23		)		—
	Balance as of end of period	$	(50	)		$	(13	)	$	(562	)		$	(13	)
	The Company discloses information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position in accordance with ASU 2011-11, Disclosures about Offsetting Assets and Liabilities. The derivatives instruments are subject to a master netting agreement allowing for the netting of assets and liabilities on the consolidated statements of financial position.
	The following table presents the offsetting of interest rate futures as of September 30, 2014 and December 31, 2013:
			Gross Amounts of Recognized Liabilities				Gross Amounts Offset in the Statement of Financial Position			Net Amounts of Assets (Liabilities) Presented in the Statement of Financial Position				Financial Instruments		Cash Collateral Received (Pledged)			Net Amount
			(in thousands)
	September 30, 2014		$	(263	)		$	176		$	(87	)		$	—	$	(87	)	$	—
	December 31, 2013		$	(66	)		$	217		$	151			$	—	$	—		$	151

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	Fair value is defined as the price that the Company would receive upon selling an investment in an orderly transaction to an independent buyer in the principal or most advantageous market of the investment. A fair value hierarchy is provided that gives the highest priority to unadjusted quoted prices in active markets for identical assets and liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3).
	The following three-tier fair value hierarchy prioritizes the inputs used in measuring fair value:
	Level 1—observable inputs such as quoted prices in active markets for identical securities;
	Level 2—other significant observable inputs (including but not limited to quoted prices for similar securities, interest rates, prepayment rates, credit risk, etc.); and
	Level 3—significant unobservable inputs (including the Company’s own assumptions in determining the fair value of investments).
	The following provides the hierarchy of inputs used to derive the fair value of the Company’s financial instruments as of September 30, 2014 and December 31, 2013:
		September 30, 2014
		Level 1		Level 2		Level 3		Totals
		(in thousands)
	Equity securities	$	12,055	$	—	$	—	$	12,055
	Fixed income securities	1,214		8,697		—		9,911
	Managed mutual funds	1,709		—		—		1,709
	U.S. Treasury notes	—		2,107		—		2,107
	Derivatives	176		—		—		176
	Total assets at fair value	$	15,154	$	10,804	$	—	$	25,958
	Securities sold, not yet purchased	$	1,063	$	—	$	—	$	1,063
	Derivatives	263		—		—		263
	Total liabilities at fair value	$	1,326	$	—	$	—	$	1,326
		December 31, 2013
		Level 1		Level 2		Level 3		Totals
		(in thousands)
	Equity securities	$	11,961	$	—	$	—	$	11,961
	Fixed income securities	1,220		5,865		—		7,085
	Managed mutual funds	1,668		—		—		1,668
	U.S. Treasury notes	—		607		—		607
	Derivatives	217		—		—		217
	Total assets at fair value	$	15,066	$	6,472	$	—	$	21,538
	Securities sold, not yet purchased	$	777	$	—	$	—	$	777
	Derivatives	66		—		—		66
	Total liabilities at fair value	$	843	$	—	$	—	$	843
	Valuations of investments in fixed income securities and U.S. Treasury notes can generally be obtained through independent pricing services. For most bond types, the pricing service utilizes matrix pricing, which considers one or more of the following factors: yield or price of bonds of comparable quality, coupon, maturity, current cash flows, type and current day trade information, as well as dealer supplied prices. These valuations are categorized as Level 2 in the hierarchy.
	There were no Level 3 securities held by the Company at September 30, 2014 or December 31, 2013.
	The Company’s policy is to recognize transfers in and transfers out of the valuation levels as of the beginning of the reporting period. There were no transfers between Level 1 and Level 2 securities during the nine months ended September 30, 2014.

Accrued_Expenses_and_Other_Lia

Accrued Expenses and Other Liabilities	9 Months Ended
	Sep. 30, 2014
Accounts Payable and Accrued Liabilities [Abstract]	'
Accrued Expenses and Other Liabilities	'
	Accrued Expenses and Other Liabilities
	Accrued expenses and other liabilities as of September 30, 2014 and December 31, 2013 consisted of the following:
		30-Sep-14		31-Dec-13
		(in thousands)
	Accrued bonus and sales commissions	$	21,323	$	28,305
	Accrued payroll and benefits	2,817		2,970
	Accrued sub-transfer agent fees	9,476		8,081
	Dividends payable	2,193		3,272
	Amounts payable under tax receivable agreement	2,091		1,955
	Securities sold, not yet purchased	1,063		777
	Other accruals and liabilities	4,766		4,453
		$	43,729	$	49,813

Line_of_Credit

Line of Credit	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Line of Credit	'
	Line of Credit
	On February 13, 2013, the Company and Manning & Napier Group executed a Daily Adjusting LIBOR Revolving Line Note (the "Note") with M&T Bank. The Note has an original principal amount of $10.0 million and bears an interest rate of 1.50 percentage points above the greater of (a) one-month LIBOR, adjusting daily, or (b) one-day (i.e., overnight) LIBOR. The Note is unsecured and is payable on demand. If the Company fails to make payment when due under the Note, the default rate on the outstanding balance shall be 5 percentage points per year above the otherwise applicable rate per year. The Company has not drawn any loans under the Note.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	The Company may from time to time enter into agreements that contain certain representations and warranties and which provide general indemnifications. The Company may also serve as a guarantor of such obligations of one or more of the Manning & Napier Group entities. The Company’s maximum exposure under these arrangements is unknown, as this would involve future claims that may be made against the Company that have not yet occurred. The Company expects any risk of liability associated with such guarantees to be remote.
	Regulation
	As an investment adviser to a variety of investment products, the Company and its affiliated broker-dealer are subject to routine reviews and inspections by the SEC, Financial Industry Regulatory Authority, Inc., National Futures Association and U.S. Commodity Futures Trading Commission. From time to time, the Company may also be subject to claims, be involved in various legal proceedings arising in the ordinary course of its business and be subject to other contingencies. The Company does not believe that the outcome of any of these reviews, inspections or other legal proceedings will have a material impact on its consolidated financial statements; however, litigation is subject to many uncertainties, and the outcome of individual litigated matters is difficult to predict. The Company will establish accruals for matters that are probable, can be reasonably estimated, and may take into account any related insurance recoveries to the extent of such recoveries. Currently, there are no legal proceedings pending or, to the Company’s knowledge, threatened against it. As of September 30, 2014 and December 31, 2013, the Company has not accrued for any such claims, legal proceedings, or other contingencies.

Earnings_per_Common_Share

Earnings per Common Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Earnings per Common Share	'
	Earnings per Common Share
	Basic earnings per share (“basic EPS”) is computed by dividing net income by the weighted average number of shares outstanding for the reporting period. Diluted earnings per share (“diluted EPS”) gives effect during the reporting period to other potentially dilutive shares outstanding.
	The following is a reconciliation of the income and share data used in the basic and diluted earnings per share computations for the three and nine months ended September 30, 2014 and 2013:
		Three months ended September 30,				Nine months ended September 30,
		2014		2013		2014		2013
		(in thousands, except share data)
	Net income attributable to controlling and noncontrolling interests	$	19,820	$	22,793	$	55,199	$	57,782
	Less: net income attributable to noncontrolling interests	19,392		21,479		53,991		55,864
	Net income attributable to Manning & Napier, Inc.	$	428	$	1,314	$	1,208	$	1,918
	Weighted average shares of Class A common stock outstanding - basic	13,705,134		13,634,246		13,669,391		13,612,289
	Dilutive effect from restricted stock units	224,886		56,395		153,011		61,210
	Weighted average shares of Class A common stock outstanding - diluted	13,930,020		13,690,641		13,822,402		13,673,499
	Net income available to Class A common stock per share - basic	$	0.03	$	0.1	$	0.09	$	0.14
	Net income available to Class A common stock per share - diluted	$	0.03	$	0.1	$	0.09	$	0.14
	For the nine months ended September 30, 2014, a total of 282,247 shares of Class A common stock issuable upon the assumed conversion of restricted stock units were excluded from the calculation of diluted net income available to Class A common stock per share, as the effect of including these shares for the respective periods would have been anti-dilutive.
	In addition, for the three and nine months ended September 30, 2014, a total of 181,378 shares of Class A common stock issuable upon the assumed conversion of restricted stock units were excluded from the calculation of diluted net income available to Class A common stock per share, as the performance conditions of these awards were not satisfied as of September 30, 2014.
	At September 30, 2014 there were 73,574,338 Class A Units of Manning & Napier Group outstanding which, subject to certain restrictions, may be exchangeable for up to 73,574,338 shares of the Company’s Class A common stock. The restrictions set forth in the exchange agreement were in place at the end of the current reporting period. As such, these units were not included in the calculation of diluted earnings per common share for the three and nine months ended September 30, 2014.
	The Company’s Class B common stock represent voting interests and do not participate in the earnings of the Company. Accordingly, there is no basic or diluted EPS related to the Company’s Class B common stock.

Equity_Based_Compensation

Equity Based Compensation	9 Months Ended
	Sep. 30, 2014
Share-based Compensation [Abstract]	'
Equity Based Compensation	'
	Equity Based Compensation
	2011 Equity Compensation Plan
	During the nine months ended September 30, 2014, 534,798 equity awards were issued under the 2011 Equity Compensation Plan (the "2011 Plan"). Of these awards, 56,000 related to the redemption of previously issued and outstanding Class A units of Manning & Napier Group that were granted prior to the initial public offering, which were subsequently re-issued as Class A common stock. The remaining 478,798 represent newly issued awards, consisting of 15,173 shares of Class A common stock and 463,625 restricted stock units. The Class A common stock awards vested immediately, and 282,247 of the restricted stock units will vest on the third anniversary of the grant date. The remaining 181,378 of the restricted stock units will vest over a three-year service period, subject to achievement of certain revenue objectives. As such, these awards are considered to have a performance condition and the Company will periodically assess which outcomes are probable of achievement to ensure that compensation cost recognized for these awards reflects the number of awards that are ultimately expected to vest.
	The following table summarizes stock award activity for the nine months ended September 30, 2014 under the 2011 Plan:
		Restricted		Weighted Average Grant Date Fair Value
		Stock Awards
	Stock awards outstanding at January 1, 2014	416,917		$	15.63
	Granted	534,798		$	15.29
	Vested	(71,173	)	$	16.66
	Forfeited	(12,780	)	$	15.6
	Stock awards outstanding at September 30, 2014	867,762		$	15.34
	The weighted average grant date fair value of 2011 Plan awards granted during the nine months ended September 30, 2014 and 2013 was $15.29 and $15.83, respectively, based on the closing sale price of Manning & Napier Inc.'s Class A common stock as reported on the New York Stock Exchange on the date of grant, and reduced by the present value of the dividends expected to be paid on the underlying shares during the requisite service period. For such awards that vest over time, recipients are not entitled to dividends declared on the underlying shares of Class A common stock until the awards vest.
	For the three and nine months ended September 30, 2014, the Company recorded approximately $0.9 million and $2.2 million of compensation expense related to awards granted under the 2011 Plan. For the three and nine months ended September 30, 2013, the Company recorded approximately $0.6 million and $1.1 million of compensation expense related to awards under the 2011 Plan.
	The aggregate intrinsic value of 2011 Plan awards that vested during the nine months ended September 30, 2014 was approximately $1.2 million. As of September 30, 2014, there was unrecognized compensation expense related to 2011 Plan awards of approximately $7.0 million, which the Company expects to recognize over a weighted average period of approximately 2.1 years.
	Reorganization-Related Equity Based Compensation
	The following table summarizes service-based stock unit activity for the nine months ended September 30, 2014 specific to the 2011 reorganization transactions:
		Service-Based		Weighted Average Grant Date Fair Value
		Stock Units
	Stock unit awards outstanding at January 1, 2014	1,458,049		$	12
	Granted	—		$	—
	Vested	—		$	—
	Forfeited	—		$	—
	Stock unit awards outstanding at September 30, 2014	1,458,049		$	12
	In addition to the service-based stock unit activity above, during 2014 the Company also commenced recognition of compensation expense for approximately 4.1 million performance-based awards eligible to vest on December 31, 2014 under the vesting terms of ownership interests in connection with the 2011 reorganization transactions. Vesting of these performance-based awards is contingent upon the satisfaction of annual performance criteria specific to each award recipient. The determination of whether an award recipient has met such performance criteria will be made at the end of the annual service period. In accordance with Accounting Standards Codification Topic 718, Stock Compensation, the grant date for these performance-based awards will occur at the end of the service period. Until the grant date, compensation expense will be re-measured at the end of each reporting period, to the extent that service has been rendered in proportion to the total requisite service period.
	The following table summarizes performance-based stock unit activity for the nine months ended September 30, 2014 specific to the 2011 reorganization transactions:
		Performance-Based		Weighted Average Grant Date Fair Value
		Stock Units
	Stock unit awards outstanding at January 1, 2014	—		$	—
	Granted	37,577		$	16.78
	Vested	(37,577	)	$	16.78
	Forfeited	—		$	—
	Stock unit awards outstanding at September 30, 2014	—		$	—
	For the three and nine months ended September 30, 2014, the Company recorded approximately $20.8 million and $66.0 million of compensation expense related to the vesting terms of ownership interests in connection with the 2011 reorganization transactions. For the three and nine months ended September 30, 2014, approximately $4.5 million and $13.4 million is attributable to the service-based awards. For the same periods, the remaining expense of approximately $16.3 million and $52.5 million is attributable to performance-based awards. For the three and nine months ended September 30, 2014, $16.3 million and $51.9 million of the expense attributable to performance-based awards is related to awards eligible to vest on December 31, 2014 under the vesting terms of ownership interests in connection with the 2011 reorganization transactions. As discussed above, this expense is based upon the closing sale price of Manning & Napier Inc.’s Class A common stock as reported on the New York Stock Exchange on September 30, 2014.
	For the three and nine months ended September 30, 2013, the Company recognized a total of approximately $18.2 million and $62.7 million, respectively, of compensation expense related to the vesting terms of ownership interests in connection with the 2011 reorganization transactions. For the three and nine months ended September 30, 2013, approximately $4.5 million and $15.1 million, respectively, was attributable to the service-based awards. For the same periods, the remaining expense of approximately $13.7 million and $47.5 million, respectively, was attributable to performance-based awards.
	As of September 30, 2014, there was unrecognized compensation expense related to unvested service-based awards of approximately $2.2 million. The Company expects to recognize this expense over a weighted average period of 0.1 years.
	As of September 30, 2014, there was unrecognized compensation expense related to unvested performance-based awards of approximately $17.3 million, which the Company expects to recognize over a weighted average period of 0.3 years. This estimate is based upon the closing sale price of Manning & Napier, Inc.’s Class A common stock as reported on September 30, 2014.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	The Company is comprised of entities that have elected to be treated as either a limited liability company ("LLC") or a “C-Corporation". As such, the entities functioning as LLC’s are not liable for or able to benefit from U.S. federal and most state income taxes on their earnings, and earnings (losses) will be included in the personal income tax returns of each entity’s unit holders. The entities functioning as C-Corporations are liable for or able to benefit from U.S. federal and state and local income taxes on their earnings and losses, respectively.
	The Company’s income tax provision and effective tax rate were as follows:
		Three months ended September 30,						Nine months ended September 30,
		2014			2013			2014			2013
		(in thousands)
	Earnings from continuing operations before income taxes	$	22,796		$	25,015		$	65,611		$	64,581
	Effective tax rate	13.1		%	8.9		%	15.9		%	10.5		%
	Provision for income taxes	2,976			2,222			10,412			6,799
	Provision for income taxes @ 35%	7,979			8,755			22,964			22,603
	Difference between tax at effective vs. statutory rate	$	(5,003	)	$	(6,533	)	$	(12,552	)	$	(15,804	)
	For the three and nine months ended September 30, 2014 and 2013, the difference between the Company’s recorded provision and the provision that would result from applying the U.S. statutory rate of 35% is primarily attributable to the benefit resulting from the fact that a significant portion of the Company’s operations include a series of flow-through entities which are generally not subject to federal and most state income taxes. Accordingly, a portion of the Company’s earnings are not subject to corporate level taxes. For the nine months ended September 30, 2014, the benefit is partially offset by the impact of a reduction to the Company's deferred tax asset as a result of enacted changes in tax laws during the first quarter of 2014, which reduced expected tax benefits.

Related_Party_Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2014
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	Related Party Transactions
	Transactions with noncontrolling members
	From time to time, the Company may be asked to provide certain services, including accounting, legal and other administrative functions for the noncontrolling members of Manning & Napier Group. While immaterial, the Company has not received any reimbursement for such services.
	The Company manages the personal funds of certain of the Company's executive officers, including William Manning. Pursuant to the respective investment management agreements, in some instances the Company waives or reduces its regular advisory fees for these accounts and personal funds utilized to incubate products. The aggregate value of the fees waived for the nine months ended September 30, 2014 related to the Company's executive officers was approximately $0.1 million.
	Affiliate transactions - Manning & Napier Fund, Inc.
	The Company has agreements to serve as the investment manager of Manning & Napier Fund, Inc., with which certain of its officers are affiliated. Under the terms of these agreements, which are generally reviewed and continued by the board of directors of Manning & Napier Fund, Inc. annually, the Company receives a fee based on an annual percentage of the average daily net assets of each series within the Manning & Napier Fund, Inc. The Company has contractually agreed to limit its fees and reimburse expenses to limit operating expenses incurred by certain of Manning & Napier Fund, Inc. series.

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	Subsequent Events
	Distributions and dividends
	On October 29, 2014, the Board of Directors approved a distribution from Manning & Napier Group to Manning & Napier and the noncontrolling interests of Manning & Napier Group. The amount of the distribution to the members of Manning & Napier Group is approximately $46.3 million, of which approximately $39.6 million is expected to be payable to the noncontrolling interests. Concurrently, the Board of Directors declared a $0.24 per share dividend to the holders of Class A common stock. The dividend is payable on or about February 2, 2015 to shareholders of record as of January 15, 2015.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Critical Accounting Policies	'
	Critical Accounting Policies
	There have been no significant changes in our critical accounting policies and estimates from those that were disclosed in our Annual Report on Form 10-K for the year ended December 31, 2013.
	The Company believes that the disclosures herein are adequate so that the information presented is not misleading; however, these financial statements should be read in conjunction with the financial statements and the notes thereto in our Annual Report on Form 10-K for the year ended December 31, 2013. The financial data for the interim periods may not necessarily be indicative of results for future interim periods or for the full year.
Basis of Presentation	'
	Basis of Presentation
	The accompanying unaudited consolidated financial statements were prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and related rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial reporting and include all adjustments, consisting only of normal recurring adjustments which are, in the opinion of management, necessary for a fair statement of the results for the interim period.
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates or assumptions that affect the reported amounts and disclosures in the consolidated financial statements. Actual results could differ from these estimates or assumptions.
Principles of Consolidation	'
	Principles of Consolidation
	As of September 30, 2014, Manning & Napier holds an approximately 14.5% economic interest in Manning & Napier Group but, as managing member, controls all of the business and affairs of Manning & Napier Group. As a result, the Company consolidates the financial results of Manning & Napier Group and records a noncontrolling interest on its consolidated statements of financial condition with respect to the remaining economic interest in Manning & Napier Group held by Manning & Napier Group Holdings, LLC (“M&N Group Holdings”) and Manning & Napier Capital Company, LLC (“MNCC”).
	All material intercompany transactions have have been eliminated in consolidation.
	In accordance with Accounting Standards Codification ("ASU") 2009-17, Consolidation (Topic 810) – Improvements to Financial Reporting by Enterprises Involved with Variable Interest Entities, the determination of whether a company is required to consolidate an entity is based on, among other things, an entity’s purpose and design, a company’s ability to direct the activities of the entity that most significantly impact the entity’s economic performance, and whether a company is obligated to absorb losses or receive benefits that could potentially be significant to the entity. The standard also requires ongoing assessments of whether a company is the primary beneficiary of a variable interest entity (“VIE”). In January 2010, the FASB deferred portions of ASU 2009-17 that relate to certain investment companies. We determined that all entities for which we are investment manager and/or general partner, qualify for the scope deferral and will continue to be assessed for consolidation under prior accounting guidance for consolidation of VIEs.
	We provide seed capital to our investment teams to develop new products and services for our clients. Our original seed investment typically represents all or a majority of the equity investment in the new product. We evaluate our seed investments on a regular basis and consolidate such investments as required pursuant to U.S. GAAP.
	MNA serves as the investment adviser for Manning & Napier Fund Inc. series of mutual funds (the “Fund”) and the Exeter Collective Investment Trust (“CIT”). The Fund and CIT are legal entities, the business and affairs of which are managed by their respective boards of directors. As a result, each of these entities is a voting interest entity (“VOE”). While the Company holds, in limited cases, direct investments in a fund (which are made on the same terms as are available to other investors and do not represent a majority voting interest in any fund), the Company does not have a controlling financial interest or a majority voting interest and, as such, does not consolidate these entities.
	On May 22, 2014 MNA became the investment advisor of the MN Xenon Managed Futures Offshore Fund, Ltd. ("Offshore Fund") and the General Partner of the MN Xenon Managed Futures Fund LP ("LP Fund") (Note 3). The Offshore Fund is a legal entity that is subject to oversight by its board of directors. Equity holders maintain the right to attend and vote at all general meetings and therefore the voting interest model is applied to determine consolidation. Since the Company does not have any direct investments or control in the Offshore Fund, it does not consolidate this entity.
	The Company has determined that the LP Fund is not a VIE as (a) the the entity has enough equity to finance its activities without additional financial support and (b) the limited partners, as a group, have the ability to remove the general partner ("kick-out rights") with a majority vote of partnership percentage. Under the voting interest model, the Company does not consolidate VOEs in which the presumption of control by the general partner is overcome by kick-out rights.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	The Company considers all highly liquid investments with original maturities of three months or less to be cash equivalents. Cash and cash equivalents are primarily held in operating accounts at major financial institutions and also in money market securities. Cash equivalents are stated at cost, which approximates market value due to the short-term maturity of these investments. The fair value of cash equivalents have been classified as Level 1 in accordance with the fair value hierarchy.
Due from broker	'
	Due from broker
	The Company conducts business with brokers for certain of its investment activities. The due from broker balance on the consolidated statements of financial condition represents cash held by brokers as collateral for managed futures and cash at brokers as collateral for securities sold, not yet purchased.
Investment Securities	'
	Investment Securities
	Investment securities are classified as either trading or available-for-sale and are carried at fair value. Fair value is determined based on quoted market prices in active markets for identical or similar instruments.
	Investment securities classified as trading consist of equity securities, fixed income securities, and investments in mutual funds for which the Company provides advisory services. Realized and unrealized gains and losses on trading securities are recorded in net gains (losses) on investments in the consolidated statements of operations. Realized gains and losses on sales of trading securities are computed on a specific identification basis. At September 30, 2014, trading securities consist solely of investments held by the Company to provide initial cash seeding for product development purposes.
	Securities sold, not yet purchased are recorded on the trade date, are stated at fair value and represent obligations of the Company to purchase the securities at prevailing market rates. Therefore, the future satisfaction of such obligations may be for an amount greater or less than the amounts recorded on the consolidated statements of financial condition. The ultimate gains or losses recognized are dependent upon the prices at which these securities are purchased to settle the obligations under the sales commitments. Realized gains and losses from covers of securities sold, not yet purchased transactions are included in net gain (loss) from investments on the consolidated statements of operations. Securities sold, not yet purchased are stated at fair value in accrued expenses and other liabilities in the consolidated statements of financial condition, with any unrealized gains or losses reported in current period earnings in net gain (loss) from investments on the consolidated statements of operations.
Operating Segments	'
	Operating Segments
	The Company operates in one segment, the investment management industry. The Company primarily provides investment management services to separately managed accounts, mutual funds and collective investment trust funds. Management assesses the financial performance of these vehicles on a combined basis.
Revenue	'
	Revenue
	The majority of the Company’s revenues are based on fees charged to manage customers’ portfolios. Investment management fees are generally computed as a percentage of assets under management ("AUM") and recognized as earned. Fees for providing investment advisory services are computed and billed in accordance with the provisions of the applicable investment management agreements. For the Company’s separately managed accounts, clients either pay investment management fees in advance, typically for a semi-annual or quarterly period, or in arrears, typically for a monthly or quarterly period. When investment management fees are paid in advance, the Company defers the revenue and recognizes it over the applicable period. When investment management fees are paid in arrears, the Company estimates revenues based on AUM market values as of the most recent month end date, and adjusts to actual when billed. For mutual funds and collective investment trust vehicles, the Company’s fees are calculated and earned daily based on AUM.
	The Company has agreements with third parties who provide distribution and administrative services for its mutual funds, collective investment trusts and certain separately managed accounts. Third party agreements are evaluated against Financial Accounting Standards Board ("FASB") ASC 605-45 Revenue Recognition - Principal Agent Considerations to determine whether revenue should be reported gross or net of payments to third-party service providers. In management's judgment there are various indicators that support gross revenue reporting, the most notable being the Company acts as primary obligor and therefore principal service provider. Based on this evaluation, investment management service revenue is recorded gross of distribution and administrative fees paid to third parties.
Advisory Agreements	'
	Advisory Agreements
	The Company derives significant revenue from its role as advisor to the Fund and the CIT.
	The Company's investments in the Fund amounted to approximately $1.7 million as of September 30, 2014 and December 31, 2013.
	Fees earned for advisory related services provided to the Fund and CIT investment vehicles were approximately $56.5 million and $164.6 million for the three and nine months ended September 30, 2014, respectively, and $50.0 million and $144.8 million for the three and nine months ended September 30, 2013, respectively. These amounts represent greater than 10% of the Company's revenue in each respective period.

Noncontrolling_Interests_Table

Noncontrolling Interests (Tables)	9 Months Ended
	Sep. 30, 2014
Noncontrolling Interest [Abstract]	'
Reconciliation from Income Before Provision for Income Taxes to Net Income Attributable to Manning & Napier, Inc.	'
	The following provides a reconciliation from “Income before provision for income taxes” to “Net income attributable to Manning & Napier, Inc.”:
			Three months ended September 30,						Nine months ended September 30,
			2014			2013			2014			2013
			(in thousands)
	Income before provision for income taxes		$	22,796		$	25,015		$	65,611		$	64,581
	Less: gain (loss) before provision for income taxes of Manning & Napier, Inc. (a)		(87		)	(270		)	2,015			(833		)
	Income before provision for income taxes, as adjusted		22,883			25,285			63,596			65,414
	Controlling interest percentage (b)		14.5		%	13.9		%	14.3		%	13.9		%
	Net income attributable to controlling interest		3,318			3,526			9,086			9,100
	Plus: gain (loss) before provision for income taxes of Manning & Napier, Inc. (a)		(87		)	(270		)	2,015			(833		)
	Income before income taxes attributable to Manning & Napier, Inc.		3,231			3,256			11,101			8,267
	Less: provision for income taxes of Manning & Napier, Inc. (c)		2,803			1,942			9,893			6,349
	Net income attributable to Manning & Napier, Inc.		$	428		$	1,314		$	1,208		$	1,918
	________________________
	a)	Manning & Napier, Inc. incurs certain gains or expenses that are only attributable to it and are therefore excluded from the net income attributable to noncontrolling interests.
	b)	Income before provision for income taxes is allocated to the controlling interest based on the percentage of units of Manning & Napier Group held by Manning & Napier, Inc. The amount represents the Company's weighted ownership of Manning & Napier Group for the respective periods.
	c)	The consolidated provision for income taxes is equal to the sum of (i) the provision for income taxes for entities other than Manning & Napier, Inc. and (ii) the provision for income taxes of Manning & Napier, Inc. which includes all U.S. federal and state income taxes. The consolidated provision for income taxes totaled approximately $3.0 million and $2.2 million for the three months ended September 30, 2014 and 2013, respectively. The consolidated provision for income taxes totaled approximately $10.4 million and $6.8 million for the nine months ended September 30, 2014 and 2013, respectively.
Schedule of Changes Noncontrolling Interest	'
	Noncontrolling interests as of and for the nine months ended September 30, 2014 and 2013, included the following amounts:
			Nine months ended September 30,
			2014			2013
			(in thousands)
	Balance, beginning of period		$	(22,790	)	$	(41,115	)
	Net income attributable to noncontrolling interests		53,991			55,864
	Distributions to noncontrolling interests		(80,602		)	(80,959		)
	Equity-based compensation		58,406			54,892
	Purchase of Class A units of Manning & Napier Group, LLC held by noncontrolling interests		(26,531		)	(6,493		)
	Balance, end of period		$	(17,526	)	$	(17,811	)

Investment_Securities_Tables

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2014
Investments [Abstract]	'
Company's Investment Securities Holdings	'
	The following table represents the Company’s investment securities holdings as of September 30, 2014 and December 31, 2013:
		30-Sep-14
		Cost		Unrealized		Unrealized		Fair
				Gains		Losses		Value
		(in thousands)
	Available-for-sale securities
	U.S. Treasury note (0.25%, 10/31/2015)	$	2,107	$	—	$	—	$	2,107
	Trading securities
	Equity securities							12,055
	Fixed income securities							9,911
	Managed mutual funds							1,709
								23,675
	Total investment securities							$	25,782
		31-Dec-13
		Cost		Unrealized		Unrealized		Fair
				Gains		Losses		Value
		(in thousands)
	Available-for-sale securities
	U.S. Treasury note (0.25%, 8/31/2014)	$	505	$	—	$	—	$	505
	U.S. Treasury note (1.75%, 1/31/2014)	102		—		—		102
		607		—		—		607
	Trading securities
	Equity securities							11,961
	Fixed income securities							7,085
	Managed mutual funds							1,668
								20,714
	Total investment securities							$	21,321

Derivative_Instruments_Tables

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Schedule of Derivative Instruments	'
	The following tables present the notional value and fair value as of September 30, 2014 and December 31, 2013 for derivative instruments not designated as hedging instruments:
			September 30, 2014
							Fair Value
			Notional Value				Asset Derivative			Liability Derivative
			(in thousands)
	Interest rate futures		$	126,640			$	71		$	(72	)
	Index futures		2,942				—			(58		)
	Commodity futures		2,686				49			(82		)
	Currency futures		6,455				56			(51		)
	Total derivatives		$	138,723			$	176		$	(263	)
			December 31, 2013
							Fair Value
			Notional Value				Asset Derivative			Liability Derivative
			(in thousands)
	Interest rate futures		$	123,164			$	217		$	(66	)
	Total derivatives		$	123,164			$	217		$	(66	)
Schedules of Derivative Gains and Losses	'
	The following table presents the gains (losses) recognized in net gains (losses) on investments in the consolidated statements of operations for the three and nine months ended September 30, 2014 and 2013:
		Three months ended September 30,							Nine months ended September 30,
		2014				2013			2014				2013
		(in thousands)
	Interest rate futures	$	12			$	(13	)	$	(544	)		$	(13	)
	Index futures	(54		)		—			15				—
	Commodity futures	50				—			(10		)		—
	Currency futures	(58		)		—			(23		)		—
	Balance as of end of period	$	(50	)		$	(13	)	$	(562	)		$	(13	)
Offsetting of Interest Rate Futures	'
	The following table presents the offsetting of interest rate futures as of September 30, 2014 and December 31, 2013:
			Gross Amounts of Recognized Liabilities				Gross Amounts Offset in the Statement of Financial Position			Net Amounts of Assets (Liabilities) Presented in the Statement of Financial Position				Financial Instruments		Cash Collateral Received (Pledged)			Net Amount
			(in thousands)
	September 30, 2014		$	(263	)		$	176		$	(87	)		$	—	$	(87	)	$	—
	December 31, 2013		$	(66	)		$	217		$	151			$	—	$	—		$	151

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Hierarchy of Inputs Used to Derive the Fair Value of Company's Assets	'
	The following provides the hierarchy of inputs used to derive the fair value of the Company’s financial instruments as of September 30, 2014 and December 31, 2013:
		September 30, 2014
		Level 1		Level 2		Level 3		Totals
		(in thousands)
	Equity securities	$	12,055	$	—	$	—	$	12,055
	Fixed income securities	1,214		8,697		—		9,911
	Managed mutual funds	1,709		—		—		1,709
	U.S. Treasury notes	—		2,107		—		2,107
	Derivatives	176		—		—		176
	Total assets at fair value	$	15,154	$	10,804	$	—	$	25,958
	Securities sold, not yet purchased	$	1,063	$	—	$	—	$	1,063
	Derivatives	263		—		—		263
	Total liabilities at fair value	$	1,326	$	—	$	—	$	1,326
		December 31, 2013
		Level 1		Level 2		Level 3		Totals
		(in thousands)
	Equity securities	$	11,961	$	—	$	—	$	11,961
	Fixed income securities	1,220		5,865		—		7,085
	Managed mutual funds	1,668		—		—		1,668
	U.S. Treasury notes	—		607		—		607
	Derivatives	217		—		—		217
	Total assets at fair value	$	15,066	$	6,472	$	—	$	21,538
	Securities sold, not yet purchased	$	777	$	—	$	—	$	777
	Derivatives	66		—		—		66
	Total liabilities at fair value	$	843	$	—	$	—	$	843

Accrued_Expenses_and_Other_Lia1

Accrued Expenses and Other Liabilities (Tables)	9 Months Ended
	Sep. 30, 2014
Accounts Payable and Accrued Liabilities [Abstract]	'
Accrued Expenses and Other Liabilities	'
	Accrued expenses and other liabilities as of September 30, 2014 and December 31, 2013 consisted of the following:
		30-Sep-14		31-Dec-13
		(in thousands)
	Accrued bonus and sales commissions	$	21,323	$	28,305
	Accrued payroll and benefits	2,817		2,970
	Accrued sub-transfer agent fees	9,476		8,081
	Dividends payable	2,193		3,272
	Amounts payable under tax receivable agreement	2,091		1,955
	Securities sold, not yet purchased	1,063		777
	Other accruals and liabilities	4,766		4,453
		$	43,729	$	49,813

Earnings_per_Common_Share_Tabl

Earnings per Common Share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Calculation of basic and diluted earnings per share	'
	The following is a reconciliation of the income and share data used in the basic and diluted earnings per share computations for the three and nine months ended September 30, 2014 and 2013:
		Three months ended September 30,				Nine months ended September 30,
		2014		2013		2014		2013
		(in thousands, except share data)
	Net income attributable to controlling and noncontrolling interests	$	19,820	$	22,793	$	55,199	$	57,782
	Less: net income attributable to noncontrolling interests	19,392		21,479		53,991		55,864
	Net income attributable to Manning & Napier, Inc.	$	428	$	1,314	$	1,208	$	1,918
	Weighted average shares of Class A common stock outstanding - basic	13,705,134		13,634,246		13,669,391		13,612,289
	Dilutive effect from restricted stock units	224,886		56,395		153,011		61,210
	Weighted average shares of Class A common stock outstanding - diluted	13,930,020		13,690,641		13,822,402		13,673,499
	Net income available to Class A common stock per share - basic	$	0.03	$	0.1	$	0.09	$	0.14
	Net income available to Class A common stock per share - diluted	$	0.03	$	0.1	$	0.09	$	0.14

Equity_Based_Compensation_Tabl

Equity Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2014
Share-based Compensation [Abstract]	'
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	'
	The following table summarizes stock award activity for the nine months ended September 30, 2014 under the 2011 Plan:
		Restricted		Weighted Average Grant Date Fair Value
		Stock Awards
	Stock awards outstanding at January 1, 2014	416,917		$	15.63
	Granted	534,798		$	15.29
	Vested	(71,173	)	$	16.66
	Forfeited	(12,780	)	$	15.6
	Stock awards outstanding at September 30, 2014	867,762		$	15.34
Summarized Reorganization-Related Service-Based Stock Units	'
	The following table summarizes service-based stock unit activity for the nine months ended September 30, 2014 specific to the 2011 reorganization transactions:
		Service-Based		Weighted Average Grant Date Fair Value
		Stock Units
	Stock unit awards outstanding at January 1, 2014	1,458,049		$	12
	Granted	—		$	—
	Vested	—		$	—
	Forfeited	—		$	—
	Stock unit awards outstanding at September 30, 2014	1,458,049		$	12
Schedule of Reorganization Related Performance Based Stock Units	'
	The following table summarizes performance-based stock unit activity for the nine months ended September 30, 2014 specific to the 2011 reorganization transactions:
		Performance-Based		Weighted Average Grant Date Fair Value
		Stock Units
	Stock unit awards outstanding at January 1, 2014	—		$	—
	Granted	37,577		$	16.78
	Vested	(37,577	)	$	16.78
	Forfeited	—		$	—
	Stock unit awards outstanding at September 30, 2014	—		$	—

Income_Taxes_Tables

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Tax Provision and Effective Tax Rate	'
	The Company’s income tax provision and effective tax rate were as follows:
		Three months ended September 30,						Nine months ended September 30,
		2014			2013			2014			2013
		(in thousands)
	Earnings from continuing operations before income taxes	$	22,796		$	25,015		$	65,611		$	64,581
	Effective tax rate	13.1		%	8.9		%	15.9		%	10.5		%
	Provision for income taxes	2,976			2,222			10,412			6,799
	Provision for income taxes @ 35%	7,979			8,755			22,964			22,603
	Difference between tax at effective vs. statutory rate	$	(5,003	)	$	(6,533	)	$	(12,552	)	$	(15,804	)

Organization_and_Nature_of_the1

Organization and Nature of the Business (Details)	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Class A common Stock of Public Investors	100.00%
Class B common Stock of William Manning	100.00%
Voting Rights held by public	49.80%
Percentage of voting rights held by majority shareholder	50.20%
Percentage of economic rights held by public	100.00%
Percentage Of Economic Rights Held By Controlling Shareholder	0.00%
Outside ownership interest in limited liability and limited partnership companies	1.20%
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	14.50%
Majority Outside Ownership Interest in limited liability and limited partnership companies	84.30%
Outside Voting Rights in Limited Liability Company LLC or Limited Partnership companies	1.20%
Managing Member or General Partner Voting Rights In Limited Liability Company LLC or Limited Partnership	14.50%
Majority Outside Voting Rights in Limited Liability Company LLC or Limited Partnership companies	84.30%
Outside Economic Rights in Limited Liability Company LLC or Limited Partnership companies	1.20%
Managing Member or General Partner Economic Rights of Limited Liability Company LLC or Limited	14.50%
Majority Outside Economic Rights in Limited Liability Company LLC Or Limited Partnership Companies	84.30%

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
			Segment
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Number of segments	'	'	1	'	'
Trading Securities, Fair Value	$23,675,000	'	$23,675,000	'	$20,714,000
Fees earned for advisory related services provided to the Fund and CIT investment vehicles	56,500,000	50,000,000	164,600,000	144,800,000	'
Managed Mutual Funds	'	'	'	'	'
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Trading Securities, Fair Value	1,709,000	'	1,709,000	'	1,668,000
Managed Mutual Funds | Manning & Napier Fund	'	'	'	'	'
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Trading Securities, Fair Value	$1,709,000	'	$1,709,000	'	$1,668,000
Manning & Napier Group, LLC	'	'	'	'	'
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Percentage of economic interest in Manning & Napier Group held by Manning & Napier, Inc (percent)	14.50%	'	14.50%	'	'

Acquisition_Details

Acquisition (Details) (Xenon LLC, USD $)	22-May-14
In Millions, unless otherwise specified
Xenon LLC	'
Business Acquisition [Line Items]	'
Intangible assets acquired	$0.80
Goodwill	$0.90

Noncontrolling_Interests_Recon

Noncontrolling Interests (Reconciliation of Income) (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
Noncontrolling Interest [Abstract]	'		'		'		'
Income before provision for income taxes	$22,796		$25,015		$65,611		$64,581
Less: gain (loss) before provision for income taxes of Manning & Napier, Inc.	-87	[1]	-270	[1]	2,015	[1]	-833	[1]
Income before provision for income taxes, as adjusted	22,883		25,285		63,596		65,414
Controlling interest percentage	14.50%	[2]	13.90%	[2]	14.30%	[2]	13.90%	[2]
Net income attributable to controlling interest	3,318		3,526		9,086		9,100
Plus: gain (loss) before provision for income taxes of Manning & Napier, Inc.	-87	[1]	-270	[1]	2,015	[1]	-833	[1]
Income before income taxes attributable to Manning & Napier, Inc.	3,231		3,256		11,101		8,267
Less: provision for income taxes of Manning & Napier, Inc.	2,803	[3]	1,942	[3]	9,893	[3]	6,349	[3]
Net income attributable to Manning & Napier, Inc.	428		1,314		1,208		1,918
Provision for income taxes	$2,976		$2,222		$10,412		$6,799
[1]	ManningB & Napier, Inc. incurs certain gains or expenses that are only attributable to it and are therefore excluded from the net income attributable to noncontrolling interests
[2]	Income before provision for income taxes is allocated to the controlling interest based on the percentage of units of ManningB & Napier Group held by ManningB & Napier, Inc. The amount represents the Company's weighted ownership of Manning & Napier Group for the respective periods.
[3]	The consolidated provision for income taxes is equal to the sum of (i)B the provision for income taxes for entities other than ManningB & Napier, Inc. and (ii)B the provision for income taxes of ManningB & Napier, Inc. which includes all U.S. federal and state income taxes. The consolidated provision for income taxes totaled approximately $3.0 million and $2.2 million for the three months ended September 30, 2014 and 2013, respectively. The consolidated provision for income taxes totaled approximately $10.4 million and $6.8 million for the nine months ended SeptemberB 30, 2014 and 2013, respectively.

Noncontrolling_Interests_Chang

Noncontrolling Interests Changes in Noncontrolling Interest (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
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]	'	'	'	'
Balance, beginning of period	'	'	($22,790)	'
Net income attributable to noncontrolling interests	19,820	22,793	55,199	57,782
Distributions to noncontrolling interests	'	'	-80,602	-80,959
Equity-based compensation	'	'	68,141	'
Purchase of Class A units of Manning & Napier Group, LLC held by noncontrolling interests	'	'	-32,183	'
Balance, end of period	-17,526	'	-17,526	'
Non Controlling Interest	'	'	'	'
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]	'	'	'	'
Balance, beginning of period	'	'	-22,790	-41,115
Net income attributable to noncontrolling interests	'	'	53,991	55,864
Distributions to noncontrolling interests	'	'	-80,602	-80,959
Equity-based compensation	'	'	58,406	54,892
Purchase of Class A units of Manning & Napier Group, LLC held by noncontrolling interests	'	'	-26,531	-6,493
Balance, end of period	($17,526)	($17,811)	($17,526)	($17,811)

Noncontrolling_Interests_Textu

Noncontrolling Interests (Textual) (Detail) (USD $)

3 Months Ended

9 Months Ended

0 Months Ended

0 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

29-May-14

Dec. 31, 2013

29-May-14

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2014

29-May-14

Sep. 30, 2014

Manning & Napier Group, LLC

Manning & Napier Group, LLC

Manning & Napier Group, LLC

Manning And Napier Group Holding LLC

Class A common stock

Class A units

Manning & Napier Group, LLC

Noncontrolling Interest [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of economic interest in Manning & Napier Group held by Manning & Napier, Inc (percent)

'

'

'

'

'

'

'

'

14.50%

'

'

'

Percentage of economic interest in Manning & Napier Group held by MN Group Holdings, MNCC and the other members of Manning & Napier Group (percent)

'

'

'

'

'

'

'

'

'

85.50%

'

'

Purchase of Class A units of Manning & Napier Group, LLC held by noncontrolling interests, shares

'

'

'

'

'

'

187,848

2,098,837

'

'

'

'

Payments to acquire additional interest in subsidiaries

'

'

'

'

'

'

$2,100,000

$30,300,000

'

'

'

'

Conversion of stock, shares issued

'

'

'

'

'

'

'

'

'

'

56,000

'

Noncontrolling interest, decrease from redemptions or purchase of interests, remaining shares

'

'

'

'

'

'

131,848

'

'

'

'

'

Deferred tax assets, tax receivable agreements

'

'

'

'

1,400,000

'

'

'

'

'

'

'

Number of common units available for conversion

'

'

'

'

'

'

'

'

'

'

'

73,574,338

Distributions

'

'

-80,602,000

-80,959,000

'

'

'

'

'

'

'

'

Payments due to selling unit holders

41,200,000

'

41,200,000

'

1,200,000

44,000,000

'

'

'

'

'

'

Amounts payable under tax receivable agreement

2,091,000

'

2,091,000

'

'

1,955,000

'

'

'

'

'

'

Payments for TRA

'

'

2,000,000

2,000,000

'

'

'

'

'

'

'

'

Change in amounts payable under tax receivable agreement

$65,000

$118,000

($2,045,000)

$118,000

'

'

'

'

'

'

'

'

Investment_Securities_Companys

Investment Securities (Company's Investment Securities Holdings) (Details) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

U.S. Treasury Note (0.25%, 8/31/2014)

U.S. Treasury note (0.25%, 10/31/2015)

Us Treasury Notes Securities (1.75%, 1/31/2014)

Equity securities

Equity securities

Fixed income securities

Fixed income securities

Managed Mutual Funds

Managed Mutual Funds

Manning & Napier Fund

Manning & Napier Fund

Managed Mutual Funds

Managed Mutual Funds

Investment Holdings [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of Notes

'

'

0.25%

0.25%

1.75%

'

'

'

'

'

'

'

'

Cost

'

'

$505,000

$2,107,000

$102,000

'

'

'

'

'

'

'

'

Unrealized Gains

'

0

0

0

0

'

'

'

'

'

'

'

'

Unrealized Losses

'

0

0

0

0

'

'

'

'

'

'

'

'

Fair Value

'

607,000

505,000

2,107,000

102,000

'

'

'

'

'

'

'

'

Available-for-sale Securities, Restricted

600,000

600,000

'

'

'

'

'

'

'

'

'

'

'

Trading Securities, Fair Value

23,675,000

20,714,000

'

'

'

12,055,000

11,961,000

9,911,000

7,085,000

1,709,000

1,668,000

1,709,000

1,668,000

Total investment securities

$25,782,000

$21,321,000

'

'

'

'

'

'

'

'

'

'

'

Investment_Securities_Textual_

Investment Securities (Textual) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Investments [Abstract]	'	'	'
Recognized net unrealized gains on trading securities	$900,000	$500,000	'
Available-for-sale Securities, Restricted	600,000	'	600,000
Other than Temporary Impairment Losses Recognized	$0	$0	'

Derivative_Instruments_Derivat

Derivative Instruments - Derivative Instruments (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Interest Rate Contract | Future	'	'
Derivative [Line Items]	'	'
Asset Derivative	$176,000	$217,000
Liability Derivative	-263,000	-66,000
Not Designated as Hedging Instrument	'	'
Derivative [Line Items]	'	'
Notional Value	138,723,000	123,164,000
Asset Derivative	176,000	217,000
Liability Derivative	-263,000	-66,000
Not Designated as Hedging Instrument | Interest Rate Contract | Future	'	'
Derivative [Line Items]	'	'
Notional Value	126,640,000	123,164,000
Asset Derivative	71,000	217,000
Liability Derivative	-72,000	-66,000
Average Volume of Derivative Activity	130,100,000	'
Not Designated as Hedging Instrument | Index Contract | Future	'	'
Derivative [Line Items]	'	'
Notional Value	2,942,000	'
Asset Derivative	0	'
Liability Derivative	-58,000	'
Not Designated as Hedging Instrument | Commodity Contract | Future	'	'
Derivative [Line Items]	'	'
Notional Value	2,686,000	'
Asset Derivative	49,000	'
Liability Derivative	-82,000	'
Not Designated as Hedging Instrument | Currency Contract | Future	'	'
Derivative [Line Items]	'	'
Notional Value	6,455,000	'
Asset Derivative	56,000	'
Liability Derivative	($51,000)	'

Derivative_Instruments_Gains_a

Derivative Instruments - Gains and Losses (Details) (Not Designated as Hedging Instrument, Net Capital Gains (Losses) on Investments, USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Derivative, Gain (Loss) on Derivative, Net	($50)	($13)	($562)	($13)
Future | Interest Rate Contract	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Derivative, Gain (Loss) on Derivative, Net	12	-13	-544	-13
Future | Index Contract	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Derivative, Gain (Loss) on Derivative, Net	-54	0	15	0
Future | Commodity Contract	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Derivative, Gain (Loss) on Derivative, Net	50	0	-10	0
Future | Currency Contract	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Derivative, Gain (Loss) on Derivative, Net	($58)	$0	($23)	$0

Derivative_Instruments_Offsett

Derivative Instruments - Offsetting (Details) (Future, Interest Rate Contract, USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Future | Interest Rate Contract	'	'
Offsetting Liabilities [Line Items]	'	'
Gross Amounts of Recognized Liabilities	($263)	($66)
Gross Amounts Offset in the Statement of Financial Position	176	217
Net Amounts of Assets (Liabilities) Presented in the Statement of Financial Position	-87	151
Financial Instruments	0	0
Cash Collateral Received (Pledged)	-87	0
Net Amount	$0	$151

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities, at fair value	$23,675	$20,714
Available-for-sale securities, at fair value	'	607
Derivatives	176	'
Total assets at fair value	25,958	21,538
Securities sold, not yet purchased	1,063	777
Derivatives	263	'
Total liabilities at fair value	1,326	843
Equity securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities, at fair value	12,055	11,961
Fixed income securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities, at fair value	9,911	7,085
Managed Mutual Funds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities, at fair value	1,709	1,668
U.S. Treasury Notes	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities, at fair value	2,107	607
Derivatives	'	217
Securities sold, not yet purchased	'	777
Derivatives	'	66
Level 1	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives	176	'
Total assets at fair value	15,154	15,066
Securities sold, not yet purchased	1,063	'
Derivatives	263	'
Total liabilities at fair value	1,326	843
Level 1 | Equity securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities, at fair value	12,055	11,961
Level 1 | Fixed income securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities, at fair value	1,214	1,220
Level 1 | Managed Mutual Funds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities, at fair value	1,709	1,668
Level 1 | U.S. Treasury Notes	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities, at fair value	0	0
Derivatives	'	217
Securities sold, not yet purchased	'	777
Derivatives	'	66
Level 2	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives	0	'
Total assets at fair value	10,804	6,472
Securities sold, not yet purchased	0	'
Derivatives	0	'
Total liabilities at fair value	0	0
Level 2 | Equity securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities, at fair value	0	0
Level 2 | Fixed income securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities, at fair value	8,697	5,865
Level 2 | Managed Mutual Funds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities, at fair value	0	0
Level 2 | U.S. Treasury Notes	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities, at fair value	2,107	607
Derivatives	'	0
Securities sold, not yet purchased	'	0
Derivatives	'	0
Level 3	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Derivatives	0	'
Total assets at fair value	0	0
Securities sold, not yet purchased	0	'
Derivatives	0	'
Total liabilities at fair value	0	0
Level 3 | Equity securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities, at fair value	0	0
Level 3 | Fixed income securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities, at fair value	0	0
Level 3 | Managed Mutual Funds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Trading securities, at fair value	0	0
Level 3 | U.S. Treasury Notes	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Available-for-sale securities, at fair value	0	0
Derivatives	'	0
Securities sold, not yet purchased	'	0
Derivatives	'	$0

Accrued_Expenses_and_Other_Lia2

Accrued Expenses and Other Liabilities (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accounts Payable and Accrued Liabilities [Abstract]	'	'
Accrued bonus and sales commissions	$21,323	$28,305
Accrued payroll and benefits	2,817	2,970
Accrued sub-transfer agent fees	9,476	8,081
Dividends payable	2,193	3,272
Amounts payable under tax receivable agreement	2,091	1,955
Securities sold, not yet purchased	1,063	777
Other accruals and liabilities	4,766	4,453
Accrued expenses and other liabilities	$43,729	$49,813

Line_of_Credit_Details

Line of Credit (Details) (Revolving Credit Facility, USD $)	0 Months Ended
	Feb. 13, 2013
Debt Instrument [Line Items]	'
Revolving line of credit, maximum borrowing capacity	10,000,000
Default interest rate, spread above stated interest rate (percent)	5.00%
LIBOR	'
Debt Instrument [Line Items]	'
Interest rate description	'LIBOR
Basis spread on variable rate (percent)	1.50%

Earnings_per_Common_Share_Deta

Earnings per Common Share (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Net income attributable to controlling and noncontrolling interests	$19,820	$22,793	$55,199	$57,782
Less: net income attributable to noncontrolling interests	19,392	21,479	53,991	55,864
Net income attributable to Manning & Napier, Inc.	$428	$1,314	$1,208	$1,918
Weighted average basic shares of Class A common stock outstanding (shares)	13,705,134	13,634,246	13,669,391	13,612,289
Weighted Average Number Diluted Shares Outstanding Adjustment	224,886	56,395	153,011	61,210
Weighted average diluted shares of Class A common stock outstanding (shares)	13,930,020	13,690,641	13,822,402	13,673,499
Net income available to Class A common stock per basic (dollars per share)	$0.03	$0.10	$0.09	$0.14
Net income (loss) available to Class A common stock per share - diluted (dollars per share)	$0.03	$0.10	$0.09	$0.14
Class A common stock | Restricted Stock Units (RSUs)	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Class A common stock excluded from computation of earnings per share (in shares)	'	'	'	282,247
Class A common stock | Performance Shares	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Class A common stock excluded from computation of earnings per share (in shares)	181,378	'	181,378	'
Class A common stock | Class A units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Class A common stock excluded from computation of earnings per share (in shares)	73,574,338	'	73,574,338	'
Manning & Napier Group, LLC | Class A units | Class A Units	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Number of common units available for conversion	73,574,338	'	73,574,338	'

Equity_Based_Compensation_Rest

Equity Based Compensation (Restricted Stock Awards) (Details) (Restricted Stock Awards, USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Restricted Stock Awards	'	'
Stock Units	'	'
Stock unit awards, beginning balance (shares)	416,917	'
Granted (shares)	534,798	'
Vested (shares)	-71,173	'
Forfeited (shares)	-12,780	'
Stock unit awards, ending balance (shares)	867,762	'
Weighted Average Grant Date Fair Value	'	'
Stock unit awards, beginning balance, weighted average grant date fair value (dollars per share)	$15.63	'
Granted, weighted average grant date fair value (dollars per share)	$15.29	$15.83
Vested, weighted average grant date fair value (dollars per share)	$16.66	'
Forfeited, weighted average grant date fair value (dollars per share)	$15.60	'
Stock unit awards, ending balance, weighted average grant date fair value (dollars per share)	$15.34	'

Equity_Based_Compensation_Summ

Equity Based Compensation (Summarized Reorganization-Related Service-Based Stock Units) (Details) (Service Based Stock Unit, USD $)	9 Months Ended
	Sep. 30, 2014
Service Based Stock Unit	'
Stock Units	'
Stock unit awards, beginning balance (shares)	1,458,049
Granted (shares)	0
Vested (shares)	0
Forfeited (shares)	0
Stock unit awards, ending balance (shares)	1,458,049
Weighted Average Grant Date Fair Value	'
Stock unit awards, beginning balance, weighted average grant date fair value (dollars per share)	$12
Granted, weighted average grant date fair value (dollars per share)	$0
Vested, weighted average grant date fair value (dollars per share)	$0
Forfeited, weighted average grant date fair value (dollars per share)	$0
Stock unit awards, ending balance, weighted average grant date fair value (dollars per share)	$12

Equity_Based_Compensation_Summ1

Equity Based Compensation (Summarized Reorganization-Related Performance-Based Stock Units) (Details) (Performance Shares, USD $)	9 Months Ended
	Sep. 30, 2014
Performance Shares	'
Stock Units	'
Stock unit awards, beginning balance (shares)	0
Granted (shares)	37,577
Vested (shares)	-37,577
Forfeited (shares)	0
Stock unit awards, ending balance (shares)	0
Weighted Average Grant Date Fair Value	'
Stock unit awards, beginning balance, weighted average grant date fair value (dollars per share)	$0
Granted, weighted average grant date fair value (dollars per share)	$16.78
Vested, weighted average grant date fair value (dollars per share)	$16.78
Forfeited, weighted average grant date fair value (dollars per share)	$0
Stock unit awards, ending balance, weighted average grant date fair value (dollars per share)	$0

Equity_Based_Compensation_Text

Equity Based Compensation (Textual) (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Number Of Reorganization Performance Units Vesting Current Year	$4.10	'	$4.10	'
Restricted Stock Awards	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted (shares)	'	'	534,798	'
Weighted average fair value of the awards granted (dollars per share)	'	'	$15.29	$15.83
Service Based Stock Unit	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted (shares)	'	'	0	'
Weighted average fair value of the awards granted (dollars per share)	'	'	$0	'
Share-based compensation expense	4.5	15.1	13.4	4.5
Unrecognized compensation expense related to unvested awards	2.2	'	2.2	'
Weighted average period of unrecognized compensation expense (years)	'	'	'0 years 1 month	'
Reorganization Related	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Share-based compensation expense	20.8	18.2	66	62.7
Performance Shares	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted (shares)	'	'	37,577	'
Weighted average fair value of the awards granted (dollars per share)	'	'	$16.78	'
Share-based compensation expense	16.3	13.7	52.5	47.5
Unrecognized compensation expense related to unvested awards	17.3	'	17.3	'
Weighted average period of unrecognized compensation expense (years)	'	'	'0 years 3 months	'
Expense attributable to performance-based awards eligible to vest	16.3	'	51.9	'
2011 Plan	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted (shares)	'	'	478,798	'
Share-based compensation expense	0.9	0.6	2.2	1.1
Awards vested in period, aggregate intrinsic value	'	'	1.2	'
Unrecognized compensation expense related to unvested awards	$7	'	$7	'
Weighted average period of unrecognized compensation expense (years)	'	'	'2 years 1 month	'
2011 Plan | Restricted Stock Awards	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted (shares)	'	'	534,798	'
2011 Plan | Restricted Stock Units (RSUs)	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted (shares)	'	'	463,625	'
Class A common stock | 2011 Plan	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted (shares)	'	'	15,173	'
Vesting on Third Anniversary of Grant Date | 2011 Plan | Restricted Stock Units (RSUs)	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted (shares)	'	'	282,247	'
Vesting over Three Year Service Period | 2011 Plan | Restricted Stock Units (RSUs)	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted (shares)	'	'	181,378	'
Award vesting period	'	'	'3 years	'
Class A units | 2011 Plan	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Granted (shares)	'	'	56,000	'

Income_Taxes_Details

Income Taxes (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
Income Tax Disclosure [Abstract]	'	'	'	'
Earnings from continuing operations before income taxes	$22,796	$25,015	$65,611	$64,581
Effective Tax Rate (percent)	13.10%	8.90%	15.90%	10.50%
Provision for income taxes	2,976	2,222	10,412	6,799
Provision for income taxes @ 35%	7,979	8,755	22,964	22,603
Difference between tax at effective vs. statutory rate	($5,003)	($6,533)	($12,552)	($15,804)
Effective income tax rate, federal statutory income tax rate (percent)	35.00%	35.00%	35.00%	35.00%

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Related Party Transactions [Abstract]	'
Investment advisory fees waived	$0.10

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	3 Months Ended		9 Months Ended					0 Months Ended		0 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013	Oct. 29, 2014	Oct. 29, 2014	Oct. 29, 2014
					Class A common stock	Non Controlling Interest	Non Controlling Interest	Non Controlling Interest	Manning & Napier Group, LLC	Manning & Napier Group, LLC
								Subsequent Event	Subsequent Event	Subsequent Event
										Class A common stock
Subsequent Event [Line Items]	'	'	'	'	'	'	'	'	'	'
Amount approved for distribution to members of Manning & Napier Group	'	'	'	'	'	'	'	'	$46,300,000	'
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	'	'	$80,602,000	$80,959,000	'	$80,602,000	$80,959,000	$39,600,000	'	'
Per share dividend declared to the holders of Class A common stock	$0.16	$0.16	$0.48	$0.48	$0.48	'	'	'	'	$0.24