Fox Factory Holding (FOXF) 10-K 2 Mar 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Feb. 26, 2015	Jun. 30, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	FOXF
Entity Registrant Name	Fox Factory Holding Corp
Entity Central Index Key	1424929
Current Fiscal Year End Date	-19
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		37,112,512
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Public Float			$218,731

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$4,212	$1,683
Accounts receivable (net of allowance for doubtful accounts of $348 and $366 at December 31, 2014 and 2013, respectively)	39,221	33,781
Inventory	59,191	42,783
Prepaids and other current assets	5,687	2,648
Deferred tax assets	4,298	3,490
Total current assets	112,609	84,385
Property, plant and equipment, net	20,329	13,418
Loan fees, net	979	717
Goodwill	58,745	31,925
Intangibles, net	65,184	27,284
Other assets	591	0
Total assets	258,437	157,729
Current liabilities:
Accounts payable	30,371	24,254
Accrued expenses	12,128	12,451
Liability reserve for uncertain tax positions	7,785	7,796
Current portion of long-term debt	2,837	0
Current portion of contingent consideration	7,704	0
Total current liabilities	60,825	44,501
Line of credit	0	8,000
Long-term debt, less current portion	47,163	0
Deferred rent	681	931
Deferred tax liabilities	7,414	12,005
Contingent consideration, less current portion	13,548	0
Total liabilities	129,631	65,437
Commitments and contingencies (Note 8)
Stockholders’ equity
Preferred stock, $0.001 par value—10,000 authorized and no shares issued or outstanding as of December 31, 2014 and December 31, 2013	0	0
Common stock, $0.001 par value—90,000 authorized; 37,117 shares issued and 37,078 outstanding as of December 31, 2014; 36,317 shares issued and outstanding as of December 31, 2013	37	36
Additional paid-in capital	97,006	87,788
Accumulated other comprehensive loss	-406	-15
Retained earnings	32,169	4,483
Total stockholders’ equity	128,806	92,292
Total liabilities and stockholders’ equity	$258,437	$157,729

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$348	$366
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares issued	37,117,000
Common stock, shares outstanding	37,078,000	36,317,000

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Sales	$306,734	$272,746	$235,869
Cost of sales	212,314	192,617	173,040
Gross profit	94,420	80,129	62,829
Operating expenses:
Sales and marketing	19,192	14,153	12,570
Research and development	13,642	10,409	9,727
General and administrative	17,683	11,408	9,063
Amortization of purchased intangibles	6,424	5,378	5,315
Fair value adjustment of contingent consideration and acquisition related compensation	2,856	0	0
Total operating expenses	59,797	41,348	36,675
Income from operations	34,623	38,781	26,154
Other expense, net:
Interest expense	999	4,125	3,486
Other (income) expense, net	-693	-12	277
Other expense, net	306	4,113	3,763
Income before income taxes	34,317	34,668	22,391
Provision for income taxes	6,631	10,566	8,181
Net income	$27,686	$24,102	$14,210
Earnings per share:
Basic (in dollars per share)	$0.75	$0.70	$0.44
Diluted (in dollars per share)	$0.73	$0.68	$0.44
Weighted average shares used to compute earnings per share:
Basic (in shares)	36,756	34,571	32,059
Diluted (in shares)	37,807	35,705	32,515

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income	$27,686	$24,102	$14,210
Other comprehensive (loss) income:
Foreign currency translation adjustments	-391	-16	1
Other comprehensive (loss) income	-391	-16	1
Comprehensive income	$27,295	$24,086	$14,211

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)	Total	Common Stock	Additional paid-in capital	Accumulated other comprehensive (loss) income	Retained earnings (deficit)
In Thousands, except Share data, unless otherwise specified
Beginning Balance at Dec. 31, 2011	$67,295	$30	$34,094	$0	$33,171
Beginning Balance (in shares) at Dec. 31, 2011		30,030,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercises of employee stock options (in shares)		3,435,000
Issuance of common stock upon exercises of employee stock options	7,204	3	7,201
Excess tax benefit from exercise of stock options	5,755		5,755
Dividend distribution ($2.00 per share)	-67,000				-67,000
Repurchase of common stock (in shares)		-5,000
Repurchase of common stock	-29		-29
Stock-based compensation expense	2,148		2,148
Foreign currency translation adjustment	1			1
Net income	14,210				14,210
Ending Balance at Dec. 31, 2012	29,584	33	49,169	1	-19,619
Ending Balance (in shares) at Dec. 31, 2012		33,460,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)		2,857,000
Issuance of common stock	36,122	3	36,119
Stock-based compensation expense	2,500		2,500
Foreign currency translation adjustment	-16			-16
Net income	24,102				24,102
Ending Balance at Dec. 31, 2013	92,292	36	87,788	-15	4,483
Ending Balance (in shares) at Dec. 31, 2013	36,317,000	36,317,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercises of employee stock options (in shares)		800,000
Issuance of common stock upon exercises of employee stock options	2,108	1	2,107
Excess tax benefit from exercise of stock options	2,680		2,680
Tax benefit from equity issuance costs	958		958
Repurchase of common stock (in shares)		-39,000
Repurchase of common stock	-571		-571
Stock-based compensation expense	4,044		4,044
Foreign currency translation adjustment	-391			-391
Net income	27,686				27,686
Ending Balance at Dec. 31, 2014	$128,806	$37	$97,006	($406)	$32,169
Ending Balance (in shares) at Dec. 31, 2014	37,078,000	37,078,000

Consolidated_Statements_of_Sto1

Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2012
Statement of Stockholders' Equity [Abstract]
Dividend distribution, per share	$2

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
OPERATING ACTIVITIES:
Net income	$27,686	$24,102	$14,210
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	9,730	7,759	7,204
Provision for doubtful accounts	-18	-74	68
Stock-based compensation	4,044	2,500	2,148
Excess tax benefit from exercise of stock options	-2,680	0	-5,755
Tax benefit from equity issuance costs	-958	0	0
(Loss) gain on disposal of property and equipment	-27	-7	253
Deferred taxes	-5,399	-3,236	-3,184
Amortization of loan fees	182	323	387
Write-off of unamortized loan origination costs from related party debt	0	1,405	0
City of Watsonville loan credit	0	0	-4
Change in fair value of contingent consideration	2,217	0	0
Changes in operating assets and liabilities:
Accounts receivable	-635	-8,510	-7,029
Inventory	-1,204	-7,447	-4,723
Income taxes	2,563	2,965	7,846
Prepaids and other assets	-2,988	-405	-474
Accounts payable	1,406	3,614	2,981
Accrued expenses	-764	-169	2,758
Deferred rent	-250	-201	681
Net cash provided by operating activities	32,905	22,619	17,367
INVESTING ACTIVITIES:
Acquisitions	-70,938	-1,117	0
Purchases of property and equipment	-4,625	-3,932	-4,928
Acquisition of other assets	-1,401	0	0
Proceeds from sale of property and equipment	135	7	2
Purchase of intangible assets	0	0	-835
Net cash used in investing activities	-76,829	-5,042	-5,761
FINANCING ACTIVITIES:
Proceeds from line of credit	18,600	27,721	0
Payments on line of credit	-26,600	-20,500	0
Proceeds from related party line of credit	0	31,858	32,385
Payments on related party line of credit	0	-32,608	-33,085
Proceeds from issuance of debt, net of origination fees of $444	79,556	0	0
Repayment of debt	-30,000	0	0
Proceeds from issuance of related party debt	0	0	58,404
Repayment of related party debt	0	-58,500	-15,339
Proceeds from initial public offering, net of underwriter fees	0	39,857	0
Payments for deferred offering costs of initial public offering	0	-3,735	0
Tax benefit from equity issuance costs	958	0	0
Proceeds from the exercise of stock options, net of shares repurchased for tax withholding	2,108	0	7,204
Excess tax benefit from exercise of stock options	2,680	0	5,755
Repurchase of common stock	-571	0	-29
Dividends paid	0	0	-67,000
Net cash provided by (used in) financing activities	46,731	-15,907	-11,705
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	-278	-2	0
CHANGE IN CASH AND CASH EQUIVALENTS	2,529	1,668	-99
CASH AND CASH EQUIVALENTS-Beginning of period	1,683	15	114
CASH AND CASH EQUIVALENTS-End of period	4,212	1,683	15
SUPPLEMENTAL CASH FLOW INFORMATION:
Income taxes	9,338	10,778	3,510
Interest	809	2,565	2,787
Deferred offering costs recorded in accounts payable	0	1,401	0
Sport Truck USA, Inc.
SUPPLEMENTAL CASH FLOW INFORMATION:
Contingent consideration - acquisition of Sport Truck USA, Inc.	$19,035	$0	$0

Consolidated_Statements_of_Cas1

Consolidated Statements of Cash Flows (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Statement of Cash Flows [Abstract]
Issuance of debt, origination fees	$444

Description_of_Business_Basis_

Description of Business, Basis of Presentation and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Description of Business, Basis of Presentation and Summary of Significant Accounting Policies	Description of the Business, Basis of Presentation and Summary of Significant Accounting Policies
	Fox Factory Holding Corp. (the "Company") designs and manufactures performance ride dynamics products primarily for bicycles, side-by-side vehicles, on-road and off-road vehicles and trucks, all-terrain vehicles, snowmobiles, specialty vehicles and applications, and motorcycles. The Company acts both as a tier one supplier to leading action sports original equipment manufacturers and provides aftermarket products to retailers and distributors.
	Throughout this Form 10-K, unless stated otherwise or as the context otherwise requires, the "Company," "FOX," "Fox Factory," "we," "us," "our," and "ours" refer to Fox Factory Holding Corp. and its wholly owned operating subsidiaries on a consolidated basis.
	Basis of Presentation- The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). Certain prior year amounts have been reclassified to conform to current year presentation.
	Initial Public Offering- On August 13, 2013, the Company completed the initial public offering ("IPO") of its common stock pursuant to a registration statement on Form S-1. In the IPO, the Company sold 2,857 shares of common stock and the selling stockholders sold a total of 7,000 shares of common stock (including the shares sold pursuant to the exercise of the option granted to the underwriters) at an initial public offering price to the public of $15.00 per share. The Company received net proceeds from the IPO of approximately $36,122 from its sale of 2,857 shares of common stock after deducting underwriting discounts, commissions and offering expenses. The Company did not receive any proceeds from the sale of shares by the selling stockholders. The Company used the net proceeds it received to pay down related party debt. In July 2014, certain selling stockholders completed a secondary offering of the Company's common stock, which is described more fully in Note 9 - Stockholders' Equity.
	Principles of Consolidation- The consolidated financial statements include the Company and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation.
	Use of Estimates- The preparation of the Company’s consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. These estimates are based on information available as of the date of the financial statements; therefore, actual results could differ from management’s estimates.
	In the second quarter of 2014, the Company concluded an analysis of legal developments and business practices relative to the apportionment of income for state tax purposes that resulted in a change in estimate regarding income taxes. See Note 11 - Income Taxes.
	Foreign Currency Translation and Transaction - The functional currency of the Company’s non-U.S. entities is the local currency of the respective operations. The Company translates the financial statements of its non-U.S. entities into U.S. dollars each reporting period for purposes of consolidation. Assets and liabilities of the Company’s foreign subsidiaries are translated at the period-end currency exchange rates while sales and expenses are translated at the average currency exchange rates in effect for the period. The effects of these translation adjustments are a component of other comprehensive income.
	Foreign currency transaction gains (losses) of $649 , $(5), and $17 for the years ended December 31, 2014, 2013 and 2012, respectively, are included as a component of other income or expense.
	Cash and Cash Equivalents - Cash consists of cash maintained in a checking account. All highly liquid investments purchased with an original maturity date of 90 days or less at the date of purchase are considered to be cash equivalents.
	Accounts Receivable - Accounts receivable are unsecured customer obligations which generally require payment within various terms from the invoice date. The receivables are stated at the invoice amount. Financing terms vary by customer. Payments of accounts receivable are applied to the specific invoices identified on the customer’s remittance advice or if unspecified, generally to the earliest unpaid invoices.
	The carrying amount of accounts receivable is reduced by a valuation allowance that reflects management’s best estimate of amounts that may not be collected. All accounts or portions thereof deemed to be uncollectible or that may require an excessive collection cost are written off to the allowance for doubtful accounts.
	Concentration of Credit Risk -Financial instruments, which potentially subject the Company to significant concentrations of credit risk, consist primarily of cash and accounts receivable. A significant portion of the Company’s cash is held at one large financial institution. The Company has not experienced any losses in such accounts.
	The Company mitigates its credit risk with respect to accounts receivable by performing ongoing credit evaluations and monitoring of its customers’ accounts receivable balances. The following customers accounted for 10% or more of the Company’s accounts receivable balance:
		December 31,
		2014		2013
	Customer A	17%		16%
	Customer B	14%		11%
	During the years ended December 31, 2014, 2013 and 2012, Customer A from the table above represented 14%, 17%, and 13% of sales, respectively.
	The Company depends on a limited number of vendors to supply component parts for its products. The Company purchased 44%, 48%, and 43% of its product components for the years ended December, 31, 2014, 2013 and 2012, respectively, from ten vendors. As of December 31, 2014 and 2013, amounts due to these vendors represented 38% and 53% of accounts payable, respectively.
	Allowance for Doubtful Accounts -The Company records a provision for doubtful accounts based on historical experience and a detailed assessment of the collectibility of its accounts receivable. In estimating the allowance for doubtful accounts, management considers, among other factors, the aging of the accounts receivable, historical write-offs, and the credit-worthiness of each customer. If circumstances change, such as higher-than-expected defaults or an unexpected material adverse change in a major customer’s ability to meet its financial obligations, the Company’s estimate of the recoverability of the amounts due could be reduced by a material amount.
	The following table presents the activity in the allowance for doubtful accounts:
		For the years ended December 31,
	Allowance for doubtful accounts:	2014			2013			2012
	Balance, beginning of year	$	366		$	440		$	372
	Add: bad debt (benefit) expense	(10		)	(45		)	87
	Less: write-offs, net of recoveries	(8		)	(29		)	(19		)
	Balance, end of year	$	348		$	366		$	440
	Inventories -Inventories are stated at the lower of actual cost (or standard cost which generally approximates actual costs on a first-in first-out basis) or market value. Cost includes raw materials, as well as direct labor and manufacturing overhead for products we manufacture. Market value is based on current replacement cost for raw materials and on a net realizable value for finished goods. Adjustments to reduce the cost of inventory to its net realizable value are made, if required, for estimated excess, obsolescence or impaired balances.
	Property and Equipment -Property and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets. Maintenance and repairs are charged to expense as incurred, and improvements and betterments are capitalized. When assets are retired or otherwise disposed of, the cost and accumulated depreciation and amortization are removed from the balance sheet and any resulting gain or loss is reflected in operations in the period realized.
	Leasehold improvements are amortized on a straight-line basis over the terms of the lease, or the useful lives of the assets, whichever is shorter. The value assigned to land associated with buildings we own, which is not material, is not amortized. Depreciation and amortization periods for the Company’s property and equipment are as follows:
	Asset Classification		Estimated useful life
	Machine shop equipment		10-15 years
	Manufacturing equipment		5-10 years
	Office equipment and furniture		3-5 years
	Transportation equipment		5 years
	Building		39 years
	Impairment of Long-lived Assets -The Company periodically reviews property and equipment for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset is impaired or the estimated useful lives are no longer appropriate. If indicators of impairment exist and the undiscounted projected cash flows associated with such assets are less than the carrying amount of the asset, an impairment loss is recorded to write the asset down to their estimated fair values. Fair value is estimated based on discounted future cash flows. No impairment charges were recorded during the years ended December 31, 2014, 2013 and 2012.
	Business Combinations -The Company accounts for acquisitions of entities that include inputs and processes and have the ability to create outputs as business combinations. The Company allocates the purchase price of the acquisition to the tangible assets acquired, liabilities assumed and identifiable intangible assets acquired based on their estimated fair values. The excess of the purchase price over those fair values is recorded as goodwill. Acquisition-related expenses and restructuring costs are expensed as incurred. During the measurement period, the Company records adjustments to provisional amounts recorded for assets acquired and liabilities assumed with the corresponding offset to goodwill. After the measurement period, which could be up to one year after the transaction date, subsequent adjustments are recorded to the Company’s consolidated statements of income.
	Goodwill and Intangible Assets -Goodwill represents the excess of purchase price over the fair value of the net assets of businesses acquired. Annually the Company either makes a qualitative assessment prior to proceeding to step 1 of the annual goodwill impairment test or performs a two-step impairment test. If the Company makes a qualitative assessment and it determines that the fair value of the reporting unit is less than its carrying amount, the Company would perform step 1 of the annual goodwill impairment test and, if necessary, proceed to step 2. Otherwise, no further evaluation is necessary. For the two-step impairment test, in the first step, the Company compares the fair value of the reporting unit to its carrying value, including goodwill. The Company determines the fair value of the reporting unit based on a weighting of income and market approaches. If the fair value of the reporting unit exceeds the carrying value of the net assets assigned to that unit, goodwill is not impaired and no further testing is performed. If the carrying value of the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, then the Company performs the second step of the impairment test in order to determine the implied fair value of the reporting unit’s goodwill. Impairments, if any, are charged directly to earnings. The Company has a single reporting unit for purposes of assessing goodwill impairment. No impairment charges have been incurred to date.
	Intangible assets include customer relationships and the Company’s core technology, are subject to amortization over their respective useful lives, and are classified in intangibles, net in the accompanying consolidated balance sheet. These intangibles are evaluated for impairment whenever events or changes in circumstances indicate that the carrying value of the assets may not be fully recoverable. If facts and circumstances indicate that the carrying value might not be recoverable, projected undiscounted net cash flows associated with the related asset or group of assets over their estimated remaining useful lives is compared against their respective carrying amounts. Trademarks and brands are considered to be indefinite life intangibles, and are not amortized but are subject to testing for impairment annually. No impairments of intangible assets were identified in the years ended December 31, 2014, 2013 and 2012.
	Revenue Recognition -The Company recognizes sales when persuasive evidence of an arrangement exists, title has transferred, the sales price is fixed or determinable, and collectibility of the receivable is reasonably assured. Provisions for discounts, rebates, sales incentives, returns, and other adjustments are provided for in the period the related sales are recorded based on an assessment of historical trends and current projection of future results. Sales are recorded net of sales tax.
	Cost of Sales -Cost of sales primarily consists of materials and labor expense in the manufacturing of the Company’s products. Cost of sales also includes provisions for excess and obsolete inventory, warranty costs, certain allocated costs for facilities, depreciation and other manufacturing overhead. Additionally, it includes stock-based compensation for personnel directly involved with manufacturing the Company’s product offerings.
	Sales and Marketing -Sales and marketing expenses include costs related to sales, customer service and marketing personnel, including their wages, employee benefits and related stock-based compensation, and occupancy related expenses. Other significant sales and marketing expenses include race support and sponsorships of events and athletes, advertising and promotions related to trade shows, travel and entertainment, and promotional materials, products and sales offices costs.
	Research and Development -Research and development expenses consist primarily of salaries and personnel costs, including wages, employee benefits and related stock-based compensation for the Company’s engineering, research and development teams, occupancy related expenses, fees for third party consultants, service fees, and expenses for prototype tooling and materials, travel, and supplies. The Company expenses research and development costs as incurred.
	General and Administrative -General and administrative expenses include costs related to executive, finance, information technology, human resources and administrative personnel, including wages, employee benefits and related stock-based compensation expenses. The Company records professional and contract service expenses, occupancy related expenses associated with corporate locations and equipment, and legal expenses in general and administrative expenses. The Company paid annual management fees to an affiliate of the Company’s former majority stockholder, Compass Group Diversified Holdings LLC (“Compass”), which fees are included as part of general and administrative expenses. See Note 6 - Related Party Transactions. The Company terminated the management services agreement with Compass upon the consummation of the IPO in August 2013.
	Stock-Based Compensation -The Company measures stock-based compensation for all stock-based awards, including stock options and restricted stock units (“RSUs”), based on their estimated fair values on the date of the grant and recognizes the stock-based compensation cost for time-vested awards on a straight-line basis over the requisite service period. For performance-based RSUs, the amount of shares ultimately expected to vest is estimated at each reporting date based on management’s expectations regarding the relevant performance criteria. To the extent shares are expected to vest, the stock-based compensation cost is recognized on a straight-line basis over the requisite service period. The fair value of each stock option granted is estimated using the Black-Scholes option pricing model, net of estimated forfeitures. The forfeiture rate is based on an analysis of the Company’s actual historical forfeitures. The fair value of the RSU’s is equal to the fair value of the Company’s common stock on the grant date of the award.
	Shipping and Handling Fees and Costs -The Company includes shipping and handling fees billed to customers in sales. Shipping costs associated with inbound freight are capitalized as part of inventory and included in cost of sales as products are sold.
	Income Taxes -The Company accounts for income taxes using an asset and liability approach. Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Operating loss and tax credit carryforwards are measured by applying currently enacted tax laws. Valuation allowances are provided when necessary to reduce net deferred tax assets to an amount that is more likely than not to be realized.
	The Company recognizes the tax effects of an uncertain tax position only if it is more likely than not to be sustained based solely on its technical merits as of the reporting date and then only in an amount more likely than not to be sustained upon review by the tax authorities. The Company considers many factors when evaluating and estimating its tax positions and tax benefits, which may require periodic adjustments and which may not accurately anticipate actual outcomes.
	Advertising -Advertising costs are expensed as incurred. Costs incurred for advertising totaled $1,012 , $448, and $534 for the years ended December 31, 2014, 2013 and 2012, respectively.
	Warranties -The Company offers limited warranties on its products for one to two years. The Company recognizes estimated costs related to warranty activities as a component of cost of sales upon product shipment. The estimates are based upon historical product failure rates and historical costs incurred in correcting product failures. The recorded amount is adjusted from time to time for specifically identified warranty exposures. Actual warranty expenses are charged against the Company’s estimated warranty liability when incurred. Factors that affect the Company’s liability include the number of units, historical and anticipated rates of warranty claims, and the cost per claim.
	Fair Value of Financial Instruments - The Financial Accounting Standards Board ("FASB") has issued Accounting Standards Codification 820, Fair Value Measurements and Disclosures, that requires the valuation of assets and liabilities required or permitted to be either recorded or disclosed at fair value based on hierarchy of available inputs as follows:
	Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;
	Level 2: Quoted prices for similar assets and liabilities in active markets, quoted prices for identical assets and liabilities in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability; and
	Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e. supported by little or no market activity).
	The carrying amounts of the Company’s financial instruments, including cash, receivables, accounts payable, and accrued liabilities approximate their fair values due to their short-term nature. Amounts owed under the Company's credit facility approximate fair value due to the variable interest rate features embedded in both the line of credit and term debt.
	Certain Significant Risks and Uncertainties- The Company is subject to those risks common in manufacturing-driven markets, including, but not limited to, competitive forces, dependence on key personnel, customer demand for its products, the successful protection of its proprietary technologies, compliance with government regulations, and the possibility of not being able to obtain additional financing when needed.
	Recent Accounting Pronouncements- In May 2014, the FASB and International Accounting Standards Board issued their converged standard on revenue recognition, Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers. This standard outlines a single comprehensive model for companies to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that revenue is recognized when a customer obtains control of a good or service. A customer obtains control when it has the ability to direct the use of and obtain the benefits from the good or service. Transfer of control is not the same as transfer of risks and rewards, as it is considered in current guidance. We will apply the new guidance to determine whether revenue should be recognized over time or at a point in time. This standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2016, with no early adoption permitted, and the Company can choose to apply this standard retrospectively for each prior reporting period presented or retrospectively with the cumulative effect of initially applying the standard recognized at the date of the initial application in retained earnings.
	Other accounting standards updates effective after December 31, 2014, are not expected to have a material effect on the Company’s financial position, annual results of operations or cash flows.

Inventory

Inventory	12 Months Ended
	Dec. 31, 2014
Inventory Disclosure [Abstract]
Inventory	Inventory
	Inventory consisted of the following:
		December 31,
		2014		2013
	Raw materials	$	39,655	$	30,299
	Work-in-process	1,568		1,155
	Finished goods	17,968		11,329
	Total inventory	$	59,191	$	42,783

Property_and_Equipment_net

Property and Equipment, net	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property and Equipment, net	Property, Plant and Equipment, net
	Property, plant and equipment consisted of the following:
		December 31,
		2014			2013
	Machinery and manufacturing equipment	$	18,318		$	13,744
	Office equipment and furniture	5,297			4,243
	Transportation equipment	2,041			1,495
	Building and land	3,469			—
	Leasehold improvements	5,971			5,525
	Total	35,096			25,007
	Less: accumulated depreciation and amortization	(14,767		)	(11,589		)
	Property, plant and equipment, net	$	20,329		$	13,418
	The depreciation expense was $3,306 , $2,381, and $1,889 for the years ended December 31, 2014, 2013, and 2012, respectively.

Intangibles_net

Intangibles, net	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets
	Intangible assets, excluding goodwill, are comprised of the following:
		Gross			Accumulated			Net			Weighted
		carrying			amortization			carrying			average life
		amount						amount			(years)
	December 31, 2014:
	Customer relationships	$	36,555		$	(9,144	)	$	27,411		13
	Core technology	33,700			(28,438		)	5,262			8
	Patents	835			(394		)	441			5
	Total	$	71,090		$	(37,976	)	33,114
	Trademarks and brands, not subject to amortization							32,070
	Total							$	65,184
	December 31, 2013:
	Customer relationships	$	12,209		$	(6,939	)	$	5,270		10
	Core technology	32,500			(24,375		)	8,125			7
	Patents	835			(246		)	589			5
	Total	$	45,544		$	(31,560	)	13,984
	Trademarks and brands, not subject to amortization							13,300
	Total							$	27,284
			For the years ended December 31,
			2014			2013			2012
	Amortization of intangibles		$	6,424		$	5,378		$	5,315
	The Company acquired intangible assets in conjunction with acquisitions, as more fully described in Note 15 - Acquisitions. The acquired definite lived assets will be amortized on a straight-line basis.
	Goodwill activity consisted of the following:
	Balance as of December 31, 2013	$	31,925
	Acquisitions	26,728
	Currency translation and other adjustments	92
	Balance as of December 31, 2014	$	58,745
	Future amortization expense for finite-lived intangibles as of December 31, 2014 is as follows:
	For the years ending December 31,	Amortization Expense
	2015	$	7,366
	2016	2,754
	2017	2,691
	2018	2,691
	2019	2,618
	Thereafter	14,994
	Total expected future amortization	$	33,114

Accrued_Expenses

Accrued Expenses	12 Months Ended
	Dec. 31, 2014
Payables and Accruals [Abstract]
Accrued Expenses	Accrued Expenses
	Accrued expenses consisted of the following:
		December 31,
		2014			2013
	Payroll and related expenses	$	5,626		$	6,007
	Warranty	4,215			3,857
	Income tax payable	1,405			2,469
	Other accrued expenses	882			118
	Total	$	12,128		$	12,451
	Activity related to warranties is as follows:
		For the years ended December 31,
		2014			2013			2012
	Beginning warranty liability	$	3,857		$	4,582		$	2,799
	Charge to cost of sales	3,172			4,367			5,180
	Fair value of warranty assumed in acquisition	382			—			—
	Costs incurred	(3,196		)	(5,092		)	(3,397		)
	Ending warranty liability	$	4,215		$	3,857		$	4,582

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2014
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions
	In September 2014, the Company entered into an agreement with Compass to assist with compliance requirements pursuant to the Sarbanes-Oxley Act of 2002, as amended. While the Company was a majority-owned subsidiary, Compass provided and incurred the cost of these services to meet its own obligations as a public company. Subsequent to the secondary offering in July 2014, described in Note 9 - Stockholders' Equity, these services are not within the scope of Compass' compliance requirements. Compass has agreed to provide these services on the Company's behalf through March 31, 2016 at an estimated annual cost of approximately $150.
	During 2008, the Company entered into various loans with Compass, which provided a revolving line of credit facility and a term loan facility (“2008 Loans”). On June 15, 2012, the Company engaged in a recapitalization (the "2012 Recapitalization") involving the amendment of its outstanding debt with Compass (together with the 2008 Loans, the "Prior Credit Facility"), stock and stock options. The 2012 Recapitalization involved (1) borrowing additional funds from Compass, (2) paying $67,000 in dividends to the Company's stockholders, (3) the acceleration of the vesting of certain options, (4) the net exercise of stock options by certain officers and directors, (5) the granting of new options to certain employees, officers and directors, (6) the cancellation and re-issuance of options to two of the Company's directors, (7) the purchase of shares of the Company's common stock by Compass from certain of its employees, officers and directors, and (8) the purchase of shares of common stock by certain of our employees, officers and directors from the Company. All purchases of common stock (other than purchases under pre-existing options) and grants of new options occurred at the same price per share.
	In August 2013, in connection with its IPO, the Company repaid all indebtedness and terminated the Prior Credit Facility, recognizing a non-cash expense of approximately $1,405 related to unamortized loan origination costs. Interest expense on the Prior Credit Facility was approximately $2,179 and $2,794 for the years ended December 31, 2013 and 2012, respectively.
	The Company paid annual management fees of $308 and $500 to an affiliate of Compass for the years ended December 31, 2013 and 2012, respectively, which fees are included as part of general and administrative expenses. The Company terminated the management services agreement with Compass upon the consummation of the IPO.
	Fox Factory, Inc. has a triple-net building lease for its manufacturing and office facilities in Watsonville, California. The building is owned by Robert Fox, a founder and minority stockholder of the Company. The term of the lease ends June 30, 2018, with monthly rental payments, which are adjusted annually for a cost-of-living increase based upon the consumer price index. Payments made under this lease were $1,186, $1,156 and $1,131 for the years ended December 31, 2014, 2013 and 2012, respectively. See Note 8 - Commitments and Contingencies for a summary of the future minimum lease payments under this operating lease.

Debt

Debt	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Debt	Debt
	Amended and Restated 2013 Credit Facility
	In August 2013, the Company entered into a credit facility with Sun Trust Bank and other named lenders (the "2013 Credit Facility"). The 2013 Credit Facility provided a revolving line of credit. On March 31, 2014, the Company amended and restated the 2013 Credit Facility (the “Amended and Restated 2013 Credit Facility”). The Amended and Restated 2013 Credit Facility provided a maturing secured term loan in the principal amount of $50,000 (the "Term Loan"), subject to quarterly amortization payments, and extended the term of the 2013 Credit Facility through March 31, 2019. The proceeds of the Term Loan were used, in part, to fund the acquisition of Sport Truck USA, Inc. ("Sport Truck") and to pay down the revolving line of credit provided under the 2013 Credit Facility. On December 12, 2014, the Company entered into the First Amendment to the Amended and Restated 2013 Credit Facility. The First Amendment increased the Term Loan by the principal amount of $30,000 to a total of $56,750, subject to quarterly amortization payments, and extended the maturity of the Amended and Restated 2013 Credit Facility through December 12, 2019. The additional proceeds of the Term Loan made available through the First Amendment were used to partially fund the acquisition of Race Face Performance Products, Inc. and Easton Cycling (together "Race Face/Easton").
	The Amended and Restated 2013 Credit Facility provides for interest at either a rate based on the London Interbank Offered Rate, or LIBOR, plus a margin ranging from 1.50% to 2.50%, or based on the prime rate offered by SunTrust Bank plus a margin ranging from 0.50% to 1.50%. At December 31, 2014 the one month LIBOR and prime rates were 0.16% and 3.25%, respectively. The Amended and Restated 2013 Credit Facility is secured by substantially all of the Company’s assets, restricts the Company's ability to make certain payments and engage in certain transactions, and also requires that the Company satisfy customary financial ratios. The Company was in compliance with the covenants as of December 31, 2014.
	The following table summarizes the line of credit under the Amended and Restated 2013 Credit Facility and the 2013 Credit Facility:
		December 31,
		2014		2013
	Amount outstanding	$	—	$	8,000
	Available borrowing capacity	$	60,000	$	52,000
	Maximum borrowing capacity	$	60,000	$	60,000
	As of December 31, 2014, future principal payments for the Term Loan, including the current portion, are summarized as follows:
	For the years ending December 31,
	2015	$	2,837
	2016	2,838
	2017	4,256
	2018	4,256
	2019	35,813
	Total	50,000
	Less: current portion	2,837
	Long-term debt less current portion	$	47,163
	Prior Credit Facility
	During fiscal year 2008, the Company entered into an intercompany loan agreement with Compass, which was amended in connection with the 2012 Recapitalization and paid in full in connection with the Company's IPO. See Note 6 - Related Party Transactions.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	Operating Leases—The Company has operating lease agreements for administrative, research and development, manufacturing and sales and marketing facilities and equipment that expire at various dates. The Company recognizes rent expense on a straight-line basis over the lease term and records the difference between cash rent payments and the recognition of rent expense as a deferred rent liability. Rent expense was $3,214, $2,953, and $2,909 for the years ended December 31, 2014, 2013 and 2012, respectively. See Note 6 for additional information on related party operating leases.
	Approximate remaining future minimum lease payments under these operating leases as of December 31, 2014, are as follows:
	For the years ending December 31,	Third party future payments		Related party future payments		Total future payments
	2015	$	2,225	$	1,203	$	3,428
	2016	2,161		1,203		3,364
	2017	1,689		1,203		2,892
	2018	740		601		1,341
	2019	54		—		54
	Thereafter	—		—		—
		$	6,869	$	4,210	$	11,079
	In February 2015, the Company entered into an amendment to expand its leased facility in El Cajon, California. The resulting incremental increase in annual minimum lease payments is approximately $295 through 2017, subject to annual rate escalations. The amendment also extended the lease term through February 2021, resulting in annual commitments of approximately $786, $847, $1,018, and $146 in years 2018-2021, respectively.
	Indemnification Agreements—In the ordinary course of business, the Company may provide indemnifications of varying scope and terms to customers, vendors, lessors, business partners, and other parties with respect to certain matters, including, but not limited to, losses arising out of breach of such agreements, services to be provided by the Company or intellectual property infringement claims made by third parties. In addition, the Company has entered into indemnification agreements with directors and certain officers and employees that will require the Company, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors, officers or employees. While the outcome of these matters cannot be predicted with certainty, the Company does not believe that the outcome of any claims under indemnification arrangements will have a material effect on the Company’s results of operations, financial position or liquidity.
	Other Commitments—In connection with the acquisition of businesses, the Company has agreed to pay up to $46,195 in additional consideration and acquisition related compensation through 2017, contingent upon the achievement of certain financial performance goals and in some cases continued employment through 2016. A portion of the obligation is denominated in Canadian dollars. See Note 12 - Fair Value Measurements and Note 15 - Acquisitions.

Stockholders_Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stockholders' Equity	Stockholders' Equity
	Secondary Offering
	In July 2014, selling stockholders, including Compass, sold 5,750 shares of the Company's common stock at a price of $15.50 per share, less underwriting discounts and commissions, in a secondary public offering. The total shares sold include 750 shares, which were also sold by certain selling stockholders, in connection with the underwriters' option to purchase additional shares. The Company did not sell shares or receive any proceeds from the sales of shares by the selling stockholders. The Company incurred approximately $469 of expenses in connection with the offering during the year ended December 31, 2014.
	Share Repurchase Program
	On November 3, 2014, the Company's Board of Directors authorized the repurchase of up to an aggregate of $40,000 in shares of our common stock under our stock repurchase program. Shares of common stock repurchased under this program are deemed issued but not outstanding. At December 31, 2014, $39,429 remains available for repurchase under this plan. The repurchase program will expire on December 31, 2015 unless extended by the Board of Directors.
	Equity Incentive Plans
	The Company has outstanding awards under the following equity incentive plans: the 2008 Stock Option Plan (the "2008 Plan"), the 2008 Non-Statutory Stock Option Plan (the "2008 Non-Statutory Plan") and the 2013 Omnibus Plan (the "2013 Plan"). No further awards will be granted pursuant to the 2008 Plan or the 2008 Non-Statutory Plan. Under the 2013 Plan, the Company has the ability to issue incentive stock options, non-statutory stock options, stock appreciation rights, restricted stock awards, RSUs, performance units and/or performance shares.
	The equity incentive plans are administered by the Compensation Committee of the board of directors of the Company, which has the authority to determine the type of incentive award, as well as the terms and conditions of the awards. Options granted under the plans have vesting periods ranging from one to five years and expire no later than 10 years from the date of grant. RSUs generally vest over a four-year period with 25% vesting at the end of one year and the remaining vesting annually thereafter. In addition to time-based vesting criteria, certain of our RSUs include performance-based vesting criteria. As of December 31, 2014, there were 5,299 shares reserved for issuance under the Company's equity incentive plans and 2,776 shares available for grant under the 2013 Plan.
	Stock-Based Compensation
	Compensation expense related to the Company's share-based awards for the years ended December 31, 2014, 2013 and 2012 was $4,044, $2,500 and $2,148, respectively, of which $3,401, $897 and $0, respectively, related to RSUs and $643, $1,603 and $2,148, respectively, related to stock options.
	The following table summarizes the allocation of stock-based compensation in the accompanying consolidated statements of income:
			For the years ended December 31,
			2014				2013			2012
	Cost of sales		$	43			$	23		$	—
	Sales and marketing		279				158			160
	Research and development		88				53			29
	General and administrative		3,634				2,266			1,959
	Total		$	4,044			$	2,500		$	2,148
	Stock-based compensation expense capitalized to inventory was not material for the years ended December 31, 2014, 2013 and 2012.
	Restricted Stock Units
	The Company grants both time-based and performance-based stock awards which also include a time-based vesting feature. Compensation expense for time-based stock awards is measured at the grant date based on the closing market price of the Company's common stock, and recognized ratably over the vesting period.
	On September 2, 2014, the Company and certain of its officers agreed to amend certain existing award agreements, thereby canceling the 386 existing RSU time-based awards and reissuing such awards in tranches that are subject to both time and performance-based vesting conditions, allowing the Company to ensure the tax deductibility of the RSU expense as 162(m) performance-based compensation. The cancellation and replacement was accounted for as a modification. Compensation expense for the modified awards is based on the original grant-date closing market price of the Company's common stock. For purposes of measuring compensation expense, the amount of shares ultimately expected to vest is estimated at each reporting date based on management’s expectations regarding the relevant performance criteria. Assuming performance goals are achieved, the Company does not expect to record incremental stock-based compensation expense as a result of the modification. The recognition of compensation expense associated with performance-based stock awards requires defined criteria for assessing achievement and judgment in assessing the probability of meeting the performance goals.
	The following table summarizes RSU activity:
		Unvested RSUs
		Number of shares outstanding			Weighted-average grant date fair value
	Unvested at December 31, 2012	—			$	—
	Granted	516			$	17.53
	Unvested at December 31, 2013	516			$	17.53
	Granted	783			$	17.3
	Canceled	(386	)		$	17.52
	Vested	(133	)		$	17.53
	Unvested at December 31, 2014	780			$	17.3
	There were no RSUs granted or outstanding prior to the year ended December 31, 2013. As of December 31, 2014, the Company had approximately $11,135 of unrecognized stock-based compensation expense related to RSUs, which will be recognized over the remaining weighted-average vesting period of approximately 2.93 years.
	Stock Options
	The Company issued no stock options in the year ended December 31, 2014. For the years ended December 31, 2013 and 2012, the fair value of options on the date of grant was estimated using the Black-Scholes option-pricing model using the single-option award approach with the weighted average assumptions set forth below. The Company estimated the expected term of options granted by taking the average of the vesting term and the contractual term of the option. Estimated volatilities were based on an analysis of comparable companies and the Company’s leverage. The Company based the risk-free interest rate on the implied yield currently available on U.S. Treasury strips maturing at the expected option term. Although the Company paid a dividend in connection with the 2012 Recapitalization described in Note 6 - Related Party Transactions, the Company does not intend to pay cash dividends in the future. As such, expected dividends are zero. Expected forfeitures are based on the Company’s historical experience.
	The assumptions used to value stock-based awards granted were as follows:
			For the years ended December 31,
			2013			2012
	Expected term (years)		5.5			5.5 - 6.5
	Volatility		36	%		36	%
	Risk-free interest rate		0.79	%		0.60 - 1.40%
	Dividend yield		—			—
	In conjunction with the 2012 Recapitalization, certain employee stock option agreements for the purchase of 902 shares of common stock were modified to accelerate the vesting. The vested options were exercised through a cashless net share settlement feature added as part of the modification, and the resulting shares were immediately repurchased by Compass. Settlement accounting was applied to these options and stock-based compensation expense was recorded to recognize expense for the previously unvested portion. Additionally, pursuant to anti-dilution provisions, certain stock option agreements were canceled and replacement options were issued with a lower exercise price based on the value of the shares repurchased in the 2012 Recapitalization. Modification accounting was applied to the replacement options and any excess fair value of the replacement awards over the fair value of the canceled awards is being recorded as compensation cost over the remaining vesting period of the grants.
	The following table summarizes stock option activity:
		Number of shares outstanding			Weighted-average exercise price				Weighted-average remaining contractual life (years)	Aggregate intrinsic value
	Balance at December 31, 2011	4,547			$	2.62			6	$	16,218
	Options granted (weighted average fair value of $1.59 per share)	1,892			$	5.35
	Options exercised	(3,764	)		$	2.43				$	11,300
	Options forfeited	(173	)		$	5.94
	Balance at December 31, 2012	2,502			$	4.88			9	$	6,828
	Options granted (weighted average fair value of $2.59 per share)	9			$	7.59
	Balance at December 31, 2013	2,511			$	4.88			8	$	32,001
	Options exercised	(711	)		$	3.9				$	8,963
	Options forfeited	(58	)		$	5.75
	Balance at December 31, 2014	1,742			$	5.25			7	$	19,136
	Options vested and expected to vest - December 31, 2014	1,742			$	5.25			7	$	19,136
	Options exercisable - December 31, 2014	1,292			$	5.13			7	$	14,343
	Aggregate intrinsic value represents the difference between the closing price of the Company's common stock on Nasdaq and the exercise price of outstanding, in-the-money options. As of December 31, 2014, the Company had approximately $693 of unrecognized stock-based compensation expense related to stock options, which will be recognized over the remaining weighted-average vesting period of approximately 2.29 years.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements
	The carrying value of the Company’s financial instruments, including cash, accounts receivable and accounts payable approximate their fair value as of December 31, 2014 and 2013, based on Level 1 inputs.
	As of December 31, 2014 and 2013, the carrying amount of the principal under the Company’s First Amendment to Amended and Restated 2013 Credit Facility approximates fair value because the facility has variable interest rates that reflect market changes in interest rates and changes in the Company’s net leverage ratio. The Company used Level 2 inputs to determine the fair value of its credit facility.
	The Company measured its contingent consideration liability arising from the acquisition of Sport Truck using Level 3 unobservable inputs (see Note 15 - Acquisitions). The fair value of the contingent consideration liability associated with the achievement of adjusted EBITDA targets is estimated at each balance sheet date by applying a Black-Scholes model to the Company's most recent financial projection.  The unobservable inputs to the valuation model that have the most significant effect on the estimated fair value of the Company's contingent consideration liability are the projected results, the probabilities that actual results will exceed the projection and the volatility surrounding the expected results.  The Company estimated the probabilities of actual results exceeding the projection during various years of the earn-out at values ranging from 70% to 100% as of December 31, 2014, compared to an overall estimate of 75% for all annual periods at the acquisition date. Additionally, volatility was measured at 35% as of December 31, 2014, compared to 41% at the acquisition date. The adjustment in fair value is recorded in the accompanying consolidated statement of income for the year ended December 31, 2014 as a component of fair value adjustment of contingent consideration and acquisition related compensation.
	The following table provides a reconciliation of the beginning and ending balances for the Company's contingent consideration liability measured at fair value using Level 3 inputs:
		Contingent consideration liability (level 3 measurement)
	Balance at December 31, 2013	$	—
	Acquisition of Sport Truck	19,035
	Losses recorded for fair value adjustments	2,217
	Balance at December 31, 2014	$	21,252
	There were no transfers of assets or liabilities between Level 1, Level 2 and Level 3 categories of the fair value hierarchy during the years ended December 31, 2014, 2013 and 2012.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share
	Basic earnings per share ("EPS") amounts are computed by dividing net income for the period by the weighted average number of common shares outstanding during the period. Diluted EPS amounts are computed by dividing net income for the period by the weighted average number of shares of common stock and potentially dilutive common stock outstanding during the period. Potentially dilutive common shares include shares issuable upon the exercise of outstanding stock options and vesting of restricted stock units, which are reflected in diluted earnings per share by application of the treasury stock method.
	The following table presents the calculation of basic and diluted earnings per share:
		For the years ended December 31,
		2014		2013		2012
	Net income	$	27,686	$	24,102	$	14,210
	Weighted average shares used to compute basic earnings per share	36,756		34,571		32,059
	Dilutive effect of employee stock plans	1,051		1,134		456
	Weighted average shares used to compute diluted earnings per share	37,807		35,705		32,515
	Earnings per share:
	Basic	$	0.75	$	0.7	$	0.44
	Diluted	$	0.73	$	0.68	$	0.44
	The Company did not exclude any potentially dilutive shares from the calculation of diluted earnings per share for the years ended December 31, 2014, 2013, and 2012, as none of these shares would have been antidilutive.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	The components of income tax expense are as follows:
		For the years ended December 31,
		2014				2013				2012
	Current:
	Federal	$	15,122			$	10,282			$	8,959
	State	(3,772		)		3,135				2,406
	Foreign	680				385				—
	Total	12,030				13,802				11,365
	Deferred:
	Federal	(5,016		)		(2,912		)		(2,674		)
	State	(383		)		(324		)		(510		)
	Total	(5,399		)		(3,236		)		(3,184		)
	Total provision	$	6,631			$	10,566			$	8,181
	The Company's income before provision for income taxes was subject to taxes in the following jurisdictions for the following periods:
		For the years ended December 31,
		2014				2013				2012
	United States	$	27,162			$	35,098			$	23,035
	Foreign	7,155				(430		)		(644		)
		$	34,317			$	34,668			$	22,391
	The following table presents a reconciliation of the statutory federal rate and the Company’s effective tax rate for the periods presented:
		For the years ended December 31,
		2014			2013			2012
	Tax at federal statutory rate	35	%		35	%		35	%
	State taxes, net of federal benefit	1.5			4.7			4.8
	Reapportionment benefit	(11.8	)		—			—
	Change in liability for unrecognized tax benefits	(4.0	)		(3.7	)		—
	Manufacturing deduction	(2.7	)		(2.9	)		(1.3	)
	Research and development tax credit	(0.8	)		(2.7	)		—
	Stock-based compensation	(0.1	)		0.1			(2.5	)
	Other	2.2			—			0.5
	Total provision	19.3	%		30.5	%		36.5	%
	For the year ended December 31, 2014, the Company's recognized a tax benefit of $4,063, or $0.11 per basic and fully diluted share, related to the reapportionment of income amongst the jurisdictions where the Company does business. The Company periodically evaluates opportunities to enhance tax efficiencies and to minimize tax liabilities through operating, legal and administrative strategies.  The reapportionment benefit relates to tax years 2009 through 2013 and resulted from the Company's examination of evolving laws, existing court cases, and its business practices. The tax benefit includes the impact of a reduction in the rate used to measure the Company's net deferred tax liability and unrecognized tax benefit. The benefit has been accounted for as a change in estimate.
	On January 3, 2013, the American Taxpayer Relief Act of 2012 was signed into law reinstating the federal research and development credit for the 2012 and 2013 years. Accordingly, the benefit related to the 2012 federal research and development credit of approximately $440 was recorded in 2013.
	On February 3, 2015, the Company announced that it had been awarded a four-year, $1,700 tax credit from the State of California, subject to certain in-state growth requirements. The Company expects that it will begin to realize the benefits of the credit in 2015.
	The following table presents the significant components of the Company’s deferred tax assets and liabilities:
		December 31,
		2014				2013
	Deferred tax assets:
	Accrued liabilities	$	3,767			$	3,464
	Inventory	1,050				466
	State income taxes	1,201				1,165
	Allowance for doubtful accounts	132				72
	Total deferred tax asset	6,150				5,167
	Deferred tax liabilities:
	Intangible assets	(6,616		)		(10,587		)
	Depreciation	(2,356		)		(2,581		)
	Property and equipment	(233		)		(404		)
	Prepaid expenses	(61		)		(110		)
	Total deferred tax liability	(9,266		)		(13,682		)
	Net deferred tax liability	$	(3,116	)		$	(8,515	)
	The following table summarizes the activity related to the Company's unrecognized tax benefits:
		For the years ended December 31,
		2014				2013				2012
	Balance - beginning of period	$	7,796			$	7,292			$	5,410
	Increase related to current year tax positions	1,988				1,896				1,882
	Decrease due to expiration of statute of limitations	(1,489		)		(1,392		)		—
	Decrease due to change in estimated state tax rate	(510		)		—				—
	Balance - end of period	$	7,785			$	7,796			$	7,292
	As of December 31, 2014, the Company had $7,785 of unrecognized tax benefits, of which approximately $7,007, if recognized, would favorably impact the effective tax rate. The Company regularly engages in discussions and negotiations with tax authorities regarding tax matters in various jurisdictions. The Company believes it is reasonably possible that certain federal, foreign, and state tax matters may be concluded in the next 12 months. Specific positions that may be resolved include issues involving the deductibility of amortization and depreciation deductions which were incurred as a result of the acquisition of the Company in 2008. The Company estimates that it is reasonably possible that the unrecognized tax benefits at December 31, 2014 could be reduced by approximately $1,323 in the next twelve months.
	As of December 31, 2014 and 2013, the Company had approximately $225 of cumulative interest and penalties related to the uncertain tax positions, and has elected to treat interest and penalties as a component of income tax expense.
	The Company's state tax returns for 2009 forward and its federal tax returns for 2011 forward are subject to examination by tax authorities.

Retirement_Plan

Retirement Plan	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Retirement Plan	Retirement Plan
	The Company established a 401(k) plan to provide tax deferred salary deductions for all eligible employees. Participants may make voluntary contributions to the 401(k) plan, limited by certain Internal Revenue Service restrictions. The Company made matching contributions of $233, $205, and $189 for each of the years ended December 31, 2014, 2013 and 2012.

Segments_and_Geographic_Areas

Segments and Geographic Areas	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Segments and Geographic Areas	Segments and Geographic Areas
	The Company has determined that it has a single operating and reportable segment. The Company considers operating segments to be components of the Company in which separate financial information is available that is evaluated regularly by the Company’s chief operating decision maker in deciding how to allocate resources and in assessing performance. The chief operating decision maker for the Company is the Chief Executive Officer. The Chief Executive Officer reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance.
	The following table summarizes total sales generated by geographic location of the customer:
			For the years ended December 31,
			2014			2013			2012
	United States		$	128,297		$	96,113		$	84,283
	Asia		88,069			89,424			72,223
	Europe		66,876			61,996			61,462
	Rest of the World		23,492			25,213			17,901
	Total sales		$	306,734		$	272,746		$	235,869
	The Company’s long-lived assets by geographic location are as follows:
		December 31,
		2014			2013
	United States	$	17,149		$	12,259
	International	3,180			1,159
	Total long-lived assets	$	20,329		$	13,418
	The following table summarizes total sales by product category:
		For the years ended December 31,
		2014			2013			2012
	Bikes	$	179,192		$	181,019		$	158,276
	Power vehicles	127,542			91,727			77,593
	Total sales	$	306,734		$	272,746		$	235,869

Acquisition

Acquisition	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Acquisition	Acquisitions
	Sport Truck USA, Inc.
	On March 31, 2014, the Company acquired certain assets and assumed certain liabilities of Sport Truck. The transaction was accounted for as a business combination. In connection with the acquisition, the Company paid cash of $40,770, after certain working capital adjustments, in accordance with the asset purchase agreement. Certain members of Sport Truck’s executive management team agreed to refund up to $1,432 of the proceeds from the sale, on a graduated basis, if they terminate employment prior to March 31, 2017. As a result, such payments have been excluded from the acquisition consideration, and will be recognized as compensation expense over the expected three year service period. As of December 31, 2014, prepaid compensation of $476 and $591 is included in prepaids and other current assets and other assets, respectively, in the accompanying consolidated balance sheet.
	Prior to the acquisition, Sport Truck was a distributor of the Company’s products. The total consideration was increased by the effective settlement of trade receivables in the amount of $473, which represented the recorded amount and as a result, no gain or loss was recorded upon settlement.
	The Company agreed to contingent consideration of up to $29,295 upon achievement of adjusted earnings before interest, taxes, depreciation and amortization ("EBITDA") targets of the acquired business through 2016, subject to adjustments defined in the asset purchase agreement. Performance compared to the targets is measured annually over a three year period, and payment of the contingent consideration will be made upon final determination of the adjusted EBITDA for each year. The estimated acquisition date fair value of the contingent consideration was $19,035, based on a Black-Scholes model. See Note 12 - Fair Value Measurements.
	The purchase price of Sport Truck is allocated to the assets acquired and liabilities assumed based on their estimated respective fair values as of March 31, 2014 with the excess purchase price allocated to goodwill. The Company’s allocation of the purchase price to the net tangible and intangible assets acquired and liabilities assumed is as follows:
	Acquisition consideration
	Cash consideration	$	40,770
	Settlement of pre-existing accounts	473
	Contingent consideration	19,035
	Total consideration at closing	$	60,278
	Fair market values
	Other current and non-current assets	$	10,534
	Property, plant and equipment	4,488
	Customer relationships	19,000
	Trademarks and brands	16,270
	Goodwill	11,962
	Total assets acquired	62,254
	Accounts payable and accrued expenses	1,976
	Total liabilities assumed	1,976
	Purchase price allocation	$	60,278
	The values assigned to the identifiable intangible assets were determined by discounting the estimated future cash flows associated with these assets to their present value. The goodwill of $11,962 reflects the strategic fit of Sport Truck with the Company’s operations. Sport Truck is well-aligned with the Company’s mission of improving vehicle performance, delivering best in-class service, and entering into strategic and adjacent markets. The Company will amortize the acquired customer relationships asset over its expected useful life of 15 years. Trademarks, brand names and goodwill are expected to have an indefinite life, and will be subject to impairment testing. The goodwill is expected to be deductible for income tax purposes.
	The Company incurred $1,402 of transaction costs in conjunction with the Sport Truck acquisition for the year ended December 31, 2014, which is included in general and administrative expense in the accompanying consolidated statement of income. Additional costs of $278 were incurred in association with financing the transaction and are included in loan fees. See Note 7 - Debt.
	The results of operations for Sport Truck have been included in the Company's consolidated statement of income since the date of acquisition. Revenue and income from operations included since the date of acquisition amount to $33,162 and $2,974, inclusive of adjustments to the fair value of contingent consideration of $2,217. See Note 12 - Fair Value Measurements.
	The following unaudited pro forma financial information shows the combined results of operations of the Company and Sport Truck, as if the acquisition had occurred as of the beginning of the periods presented. The pro forma results include the effects of the elimination of intercompany sales and profits, the amortization of purchased intangible assets and acquired inventory valuation step-up, interest expense on the term debt secured to finance the acquisition, and the net tax benefit of the above adjustments calculated at the statutory federal tax rate of 35%. Sport Truck was operated as an S Corporation for federal taxation purposes. A pro forma adjustment has been made to reflect the income taxes that would have been recorded at the federal statutory rate based on Sport Truck’s net income. This pro forma data is presented for informational purposes only and does not purport to be indicative of the results of future operations or of the results that would have occurred had the acquisition taken place in the periods noted below.
		For the years ended December 31,
		2014		2013
	Pro forma sales	$	316,181	$	304,780
	Pro forma net income	$	28,589	$	24,551
	Race Face Performance and Easton Cycling Businesses
	On December 12, 2014, the Company acquired certain assets and assumed certain liabilities of Race Face/Easton, which was engaged in the design, manufacture, and global distribution of performance mountain and road bike wheels and other performance cycling components including cranks, bars, stems, and seat posts. In connection with the acquisition, the Company paid approximately $30,168. The acquisition was financed with debt and includes a potential earn-out opportunity of up to a maximum of approximately $16,900, contingent upon continued employment and the achievement of certain performance-based financial targets through October 2016. The earn-out obligation is denominated in Canadian dollars and has been converted at the exchange rate in effect at December 31, 2014. The Company incurred $1,142 of transaction costs in conjunction with the Race Face/Easton acquisition, which is included in general and administrative expense in the accompanying consolidated statement of income. Additional costs of $166 were incurred in association with financing the transaction and are included in loan fees. See Note 7 - Debt. The allocation of the purchase price to the assets acquired and liabilities assumed is preliminary, subject to the completion of the Company's validation of working capital and completion of its intangible valuation procedures, with the assistance of specialists. Goodwill acquired is expected to be deductible for income tax purposes. The acquisition was not material to the Company's financial statements.

Selected_Quarterly_Financial_D

Selected Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Selected Quarterly Financial Data (Unaudited)	Selected Quarterly Financial Data (Unaudited)
	Selected summarized quarterly financial information for 2014 and 2013 is as follows:
		Quarter Ended
		Dec 31,		Sep 30,		Jun 30,		Mar 31,		Dec 31,		Sep 30,		Jun 30,		Mar 31,
		2014		2014		2014		2014		2013		2013		2013		2013
	Sales	$	74,104	$	90,148	$	86,374	$	56,108	$	65,259	$	82,293	$	70,316	$	54,878
	Gross profit	21,903		28,547		26,953		17,017		18,716		25,333		20,365		15,715
	Income from operations	4,229		13,911		11,736		4,747		7,803		14,773		10,143		6,062
	Net income	2,873		10,291		11,581		2,941		4,907		9,924		5,721		3,549
	Earnings per share:
	Basic	$	0.08	$	0.28	$	0.32	$	0.08	$	0.14	$	0.28	$	0.17	$	0.11
	Diluted	$	0.08	$	0.27	$	0.31	$	0.08	$	0.13	$	0.27	$	0.17	$	0.1

Description_of_Business_Basis_1

Description of Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation- The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). Certain prior year amounts have been reclassified to conform to current year presentation.
Principles of Consolidation	Principles of Consolidation- The consolidated financial statements include the Company and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation.
Use of Estimates	Use of Estimates- The preparation of the Company’s consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. These estimates are based on information available as of the date of the financial statements; therefore, actual results could differ from management’s estimates.
Foreign Currency Translation and Transaction	Foreign Currency Translation and Transaction - The functional currency of the Company’s non-U.S. entities is the local currency of the respective operations. The Company translates the financial statements of its non-U.S. entities into U.S. dollars each reporting period for purposes of consolidation. Assets and liabilities of the Company’s foreign subsidiaries are translated at the period-end currency exchange rates while sales and expenses are translated at the average currency exchange rates in effect for the period. The effects of these translation adjustments are a component of other comprehensive income.
Cash and Cash Equivalents	Cash and Cash Equivalents - Cash consists of cash maintained in a checking account. All highly liquid investments purchased with an original maturity date of 90 days or less at the date of purchase are considered to be cash equivalents.
Accounts Receivable	Accounts Receivable - Accounts receivable are unsecured customer obligations which generally require payment within various terms from the invoice date. The receivables are stated at the invoice amount. Financing terms vary by customer. Payments of accounts receivable are applied to the specific invoices identified on the customer’s remittance advice or if unspecified, generally to the earliest unpaid invoices.
	The carrying amount of accounts receivable is reduced by a valuation allowance that reflects management’s best estimate of amounts that may not be collected. All accounts or portions thereof deemed to be uncollectible or that may require an excessive collection cost are written off to the allowance for doubtful accounts.
Concentration of Credit Risk	Concentration of Credit Risk -Financial instruments, which potentially subject the Company to significant concentrations of credit risk, consist primarily of cash and accounts receivable. A significant portion of the Company’s cash is held at one large financial institution. The Company has not experienced any losses in such accounts.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts -The Company records a provision for doubtful accounts based on historical experience and a detailed assessment of the collectibility of its accounts receivable. In estimating the allowance for doubtful accounts, management considers, among other factors, the aging of the accounts receivable, historical write-offs, and the credit-worthiness of each customer. If circumstances change, such as higher-than-expected defaults or an unexpected material adverse change in a major customer’s ability to meet its financial obligations, the Company’s estimate of the recoverability of the amounts due could be reduced by a material amount.
Inventories	Inventories -Inventories are stated at the lower of actual cost (or standard cost which generally approximates actual costs on a first-in first-out basis) or market value. Cost includes raw materials, as well as direct labor and manufacturing overhead for products we manufacture. Market value is based on current replacement cost for raw materials and on a net realizable value for finished goods. Adjustments to reduce the cost of inventory to its net realizable value are made, if required, for estimated excess, obsolescence or impaired balances.
Property and Equipment	Property and Equipment -Property and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets. Maintenance and repairs are charged to expense as incurred, and improvements and betterments are capitalized. When assets are retired or otherwise disposed of, the cost and accumulated depreciation and amortization are removed from the balance sheet and any resulting gain or loss is reflected in operations in the period realized.
	Leasehold improvements are amortized on a straight-line basis over the terms of the lease, or the useful lives of the assets, whichever is shorter. The value assigned to land associated with buildings we own, which is not material, is not amortized. Depreciation and amortization periods for the Company’s property and equipment are as follows:
	Asset Classification	Estimated useful life
	Machine shop equipment	10-15 years
	Manufacturing equipment	5-10 years
	Office equipment and furniture	3-5 years
	Transportation equipment	5 years
	Building	39 years
Impairment of Long-lived Assets	Impairment of Long-lived Assets -The Company periodically reviews property and equipment for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset is impaired or the estimated useful lives are no longer appropriate. If indicators of impairment exist and the undiscounted projected cash flows associated with such assets are less than the carrying amount of the asset, an impairment loss is recorded to write the asset down to their estimated fair values. Fair value is estimated based on discounted future cash flows. No impairment charges were recorded during the years ended December 31, 2014, 2013 and 2012.
Business Combinations	Business Combinations -The Company accounts for acquisitions of entities that include inputs and processes and have the ability to create outputs as business combinations. The Company allocates the purchase price of the acquisition to the tangible assets acquired, liabilities assumed and identifiable intangible assets acquired based on their estimated fair values. The excess of the purchase price over those fair values is recorded as goodwill. Acquisition-related expenses and restructuring costs are expensed as incurred. During the measurement period, the Company records adjustments to provisional amounts recorded for assets acquired and liabilities assumed with the corresponding offset to goodwill. After the measurement period, which could be up to one year after the transaction date, subsequent adjustments are recorded to the Company’s consolidated statements of income.
Goodwill and Intangible Assets	Goodwill and Intangible Assets -Goodwill represents the excess of purchase price over the fair value of the net assets of businesses acquired. Annually the Company either makes a qualitative assessment prior to proceeding to step 1 of the annual goodwill impairment test or performs a two-step impairment test. If the Company makes a qualitative assessment and it determines that the fair value of the reporting unit is less than its carrying amount, the Company would perform step 1 of the annual goodwill impairment test and, if necessary, proceed to step 2. Otherwise, no further evaluation is necessary. For the two-step impairment test, in the first step, the Company compares the fair value of the reporting unit to its carrying value, including goodwill. The Company determines the fair value of the reporting unit based on a weighting of income and market approaches. If the fair value of the reporting unit exceeds the carrying value of the net assets assigned to that unit, goodwill is not impaired and no further testing is performed. If the carrying value of the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, then the Company performs the second step of the impairment test in order to determine the implied fair value of the reporting unit’s goodwill. Impairments, if any, are charged directly to earnings. The Company has a single reporting unit for purposes of assessing goodwill impairment. No impairment charges have been incurred to date.
	Intangible assets include customer relationships and the Company’s core technology, are subject to amortization over their respective useful lives, and are classified in intangibles, net in the accompanying consolidated balance sheet. These intangibles are evaluated for impairment whenever events or changes in circumstances indicate that the carrying value of the assets may not be fully recoverable. If facts and circumstances indicate that the carrying value might not be recoverable, projected undiscounted net cash flows associated with the related asset or group of assets over their estimated remaining useful lives is compared against their respective carrying amounts. Trademarks and brands are considered to be indefinite life intangibles, and are not amortized but are subject to testing for impairment annually. No impairments of intangible assets were identified in the years ended December 31, 2014, 2013 and 2012.
Revenue Recognition	Revenue Recognition -The Company recognizes sales when persuasive evidence of an arrangement exists, title has transferred, the sales price is fixed or determinable, and collectibility of the receivable is reasonably assured. Provisions for discounts, rebates, sales incentives, returns, and other adjustments are provided for in the period the related sales are recorded based on an assessment of historical trends and current projection of future results. Sales are recorded net of sales tax.
Cost of Sales	Cost of Sales -Cost of sales primarily consists of materials and labor expense in the manufacturing of the Company’s products. Cost of sales also includes provisions for excess and obsolete inventory, warranty costs, certain allocated costs for facilities, depreciation and other manufacturing overhead. Additionally, it includes stock-based compensation for personnel directly involved with manufacturing the Company’s product offerings.
Sales And Marketing	Sales and Marketing -Sales and marketing expenses include costs related to sales, customer service and marketing personnel, including their wages, employee benefits and related stock-based compensation, and occupancy related expenses. Other significant sales and marketing expenses include race support and sponsorships of events and athletes, advertising and promotions related to trade shows, travel and entertainment, and promotional materials, products and sales offices costs.
Research and Development	Research and Development -Research and development expenses consist primarily of salaries and personnel costs, including wages, employee benefits and related stock-based compensation for the Company’s engineering, research and development teams, occupancy related expenses, fees for third party consultants, service fees, and expenses for prototype tooling and materials, travel, and supplies. The Company expenses research and development costs as incurred.
General And Administrative	General and Administrative -General and administrative expenses include costs related to executive, finance, information technology, human resources and administrative personnel, including wages, employee benefits and related stock-based compensation expenses. The Company records professional and contract service expenses, occupancy related expenses associated with corporate locations and equipment, and legal expenses in general and administrative expenses. The Company paid annual management fees to an affiliate of the Company’s former majority stockholder, Compass Group Diversified Holdings LLC (“Compass”), which fees are included as part of general and administrative expenses. See Note 6 - Related Party Transactions. The Company terminated the management services agreement with Compass upon the consummation of the IPO in August 2013.
Stock-Based Compensation	Stock-Based Compensation -The Company measures stock-based compensation for all stock-based awards, including stock options and restricted stock units (“RSUs”), based on their estimated fair values on the date of the grant and recognizes the stock-based compensation cost for time-vested awards on a straight-line basis over the requisite service period. For performance-based RSUs, the amount of shares ultimately expected to vest is estimated at each reporting date based on management’s expectations regarding the relevant performance criteria. To the extent shares are expected to vest, the stock-based compensation cost is recognized on a straight-line basis over the requisite service period. The fair value of each stock option granted is estimated using the Black-Scholes option pricing model, net of estimated forfeitures. The forfeiture rate is based on an analysis of the Company’s actual historical forfeitures. The fair value of the RSU’s is equal to the fair value of the Company’s common stock on the grant date of the award.
Shipping and Handling Fees and Costs	Shipping and Handling Fees and Costs -The Company includes shipping and handling fees billed to customers in sales. Shipping costs associated with inbound freight are capitalized as part of inventory and included in cost of sales as products are sold.
Income Taxes	Income Taxes -The Company accounts for income taxes using an asset and liability approach. Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Operating loss and tax credit carryforwards are measured by applying currently enacted tax laws. Valuation allowances are provided when necessary to reduce net deferred tax assets to an amount that is more likely than not to be realized.
	The Company recognizes the tax effects of an uncertain tax position only if it is more likely than not to be sustained based solely on its technical merits as of the reporting date and then only in an amount more likely than not to be sustained upon review by the tax authorities. The Company considers many factors when evaluating and estimating its tax positions and tax benefits, which may require periodic adjustments and which may not accurately anticipate actual outcomes.
Advertising	Advertising -Advertising costs are expensed as incurred.
Warranties	Warranties -The Company offers limited warranties on its products for one to two years. The Company recognizes estimated costs related to warranty activities as a component of cost of sales upon product shipment. The estimates are based upon historical product failure rates and historical costs incurred in correcting product failures. The recorded amount is adjusted from time to time for specifically identified warranty exposures. Actual warranty expenses are charged against the Company’s estimated warranty liability when incurred. Factors that affect the Company’s liability include the number of units, historical and anticipated rates of warranty claims, and the cost per claim.
Fair Value of Financial Instruments	Fair Value of Financial Instruments - The Financial Accounting Standards Board ("FASB") has issued Accounting Standards Codification 820, Fair Value Measurements and Disclosures, that requires the valuation of assets and liabilities required or permitted to be either recorded or disclosed at fair value based on hierarchy of available inputs as follows:
	Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;
	Level 2: Quoted prices for similar assets and liabilities in active markets, quoted prices for identical assets and liabilities in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability; and
	Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e. supported by little or no market activity).
	The carrying amounts of the Company’s financial instruments, including cash, receivables, accounts payable, and accrued liabilities approximate their fair values due to their short-term nature. Amounts owed under the Company's credit facility approximate fair value due to the variable interest rate features embedded in both the line of credit and term debt.
Certain Risks and Uncertainties	Certain Significant Risks and Uncertainties- The Company is subject to those risks common in manufacturing-driven markets, including, but not limited to, competitive forces, dependence on key personnel, customer demand for its products, the successful protection of its proprietary technologies, compliance with government regulations, and the possibility of not being able to obtain additional financing when needed.
Recent Accounting Pronouncements	Recent Accounting Pronouncements- In May 2014, the FASB and International Accounting Standards Board issued their converged standard on revenue recognition, Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers. This standard outlines a single comprehensive model for companies to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that revenue is recognized when a customer obtains control of a good or service. A customer obtains control when it has the ability to direct the use of and obtain the benefits from the good or service. Transfer of control is not the same as transfer of risks and rewards, as it is considered in current guidance. We will apply the new guidance to determine whether revenue should be recognized over time or at a point in time. This standard will be effective for the first interim period within annual reporting periods beginning after December 15, 2016, with no early adoption permitted, and the Company can choose to apply this standard retrospectively for each prior reporting period presented or retrospectively with the cumulative effect of initially applying the standard recognized at the date of the initial application in retained earnings.
	Other accounting standards updates effective after December 31, 2014, are not expected to have a material effect on the Company’s financial position, annual results of operations or cash flows.

Description_of_Business_Basis_2

Description of Business, Basis of Presentation and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Schedules of Concentration of Risk, by Risk Factor	The Company mitigates its credit risk with respect to accounts receivable by performing ongoing credit evaluations and monitoring of its customers’ accounts receivable balances. The following customers accounted for 10% or more of the Company’s accounts receivable balance:
		December 31,
		2014		2013
	Customer A	17%		16%
	Customer B	14%		11%
Schedule of Credit Losses for Financing Receivables, Current	The following table presents the activity in the allowance for doubtful accounts:
		For the years ended December 31,
	Allowance for doubtful accounts:	2014			2013			2012
	Balance, beginning of year	$	366		$	440		$	372
	Add: bad debt (benefit) expense	(10		)	(45		)	87
	Less: write-offs, net of recoveries	(8		)	(29		)	(19		)
	Balance, end of year	$	348		$	366		$	440

Inventory_Tables

Inventory (Tables)	12 Months Ended
	Dec. 31, 2014
Inventory Disclosure [Abstract]
Inventory	Inventory consisted of the following:
		December 31,
		2014		2013
	Raw materials	$	39,655	$	30,299
	Work-in-process	1,568		1,155
	Finished goods	17,968		11,329
	Total inventory	$	59,191	$	42,783

Property_and_Equipment_net_Tab

Property and Equipment, net (Tables)	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property and Equipment	Property, plant and equipment consisted of the following:
		December 31,
		2014			2013
	Machinery and manufacturing equipment	$	18,318		$	13,744
	Office equipment and furniture	5,297			4,243
	Transportation equipment	2,041			1,495
	Building and land	3,469			—
	Leasehold improvements	5,971			5,525
	Total	35,096			25,007
	Less: accumulated depreciation and amortization	(14,767		)	(11,589		)
	Property, plant and equipment, net	$	20,329		$	13,418

Intangibles_net_Tables

Intangibles, net (Tables)	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets Excluding Goodwill	Intangible assets, excluding goodwill, are comprised of the following:
		Gross			Accumulated			Net			Weighted
		carrying			amortization			carrying			average life
		amount						amount			(years)
	December 31, 2014:
	Customer relationships	$	36,555		$	(9,144	)	$	27,411		13
	Core technology	33,700			(28,438		)	5,262			8
	Patents	835			(394		)	441			5
	Total	$	71,090		$	(37,976	)	33,114
	Trademarks and brands, not subject to amortization							32,070
	Total							$	65,184
	December 31, 2013:
	Customer relationships	$	12,209		$	(6,939	)	$	5,270		10
	Core technology	32,500			(24,375		)	8,125			7
	Patents	835			(246		)	589			5
	Total	$	45,544		$	(31,560	)	13,984
	Trademarks and brands, not subject to amortization							13,300
	Total							$	27,284
Schedule of Finite-Lived Intangible Assets, Amortization Expense
			For the years ended December 31,
			2014			2013			2012
	Amortization of intangibles		$	6,424		$	5,378		$	5,315
Schedule of Goodwill	The Company acquired intangible assets in conjunction with acquisitions, as more fully described in Note 15 - Acquisitions. The acquired definite lived assets will be amortized on a straight-line basis.
	Goodwill activity consisted of the following:
	Balance as of December 31, 2013	$	31,925
	Acquisitions	26,728
	Currency translation and other adjustments	92
	Balance as of December 31, 2014	$	58,745
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	Future amortization expense for finite-lived intangibles as of December 31, 2014 is as follows:
	For the years ending December 31,	Amortization Expense
	2015	$	7,366
	2016	2,754
	2017	2,691
	2018	2,691
	2019	2,618
	Thereafter	14,994
	Total expected future amortization	$	33,114

Accrued_Expenses_Tables

Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2014
Payables and Accruals [Abstract]
Accrued Expenses	Accrued expenses consisted of the following:
		December 31,
		2014			2013
	Payroll and related expenses	$	5,626		$	6,007
	Warranty	4,215			3,857
	Income tax payable	1,405			2,469
	Other accrued expenses	882			118
	Total	$	12,128		$	12,451
Activity Related to Warranties	Activity related to warranties is as follows:
		For the years ended December 31,
		2014			2013			2012
	Beginning warranty liability	$	3,857		$	4,582		$	2,799
	Charge to cost of sales	3,172			4,367			5,180
	Fair value of warranty assumed in acquisition	382			—			—
	Costs incurred	(3,196		)	(5,092		)	(3,397		)
	Ending warranty liability	$	4,215		$	3,857		$	4,582

Debt_Tables

Debt (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Summary of Amended & Restated 2013 Credit Facility	The following table summarizes the line of credit under the Amended and Restated 2013 Credit Facility and the 2013 Credit Facility:
		December 31,
		2014		2013
	Amount outstanding	$	—	$	8,000
	Available borrowing capacity	$	60,000	$	52,000
	Maximum borrowing capacity	$	60,000	$	60,000
Schedule of Future Principal Payments	As of December 31, 2014, future principal payments for the Term Loan, including the current portion, are summarized as follows:
	For the years ending December 31,
	2015	$	2,837
	2016	2,838
	2017	4,256
	2018	4,256
	2019	35,813
	Total	50,000
	Less: current portion	2,837
	Long-term debt less current portion	$	47,163

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases	Approximate remaining future minimum lease payments under these operating leases as of December 31, 2014, are as follows:
	For the years ending December 31,	Third party future payments		Related party future payments		Total future payments
	2015	$	2,225	$	1,203	$	3,428
	2016	2,161		1,203		3,364
	2017	1,689		1,203		2,892
	2018	740		601		1,341
	2019	54		—		54
	Thereafter	—		—		—
		$	6,869	$	4,210	$	11,079

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	The following table summarizes the allocation of stock-based compensation in the accompanying consolidated statements of income:
			For the years ended December 31,
			2014				2013			2012
	Cost of sales		$	43			$	23		$	—
	Sales and marketing		279				158			160
	Research and development		88				53			29
	General and administrative		3,634				2,266			1,959
	Total		$	4,044			$	2,500		$	2,148
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	The following table summarizes RSU activity:
		Unvested RSUs
		Number of shares outstanding			Weighted-average grant date fair value
	Unvested at December 31, 2012	—			$	—
	Granted	516			$	17.53
	Unvested at December 31, 2013	516			$	17.53
	Granted	783			$	17.3
	Canceled	(386	)		$	17.52
	Vested	(133	)		$	17.53
	Unvested at December 31, 2014	780			$	17.3
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The assumptions used to value stock-based awards granted were as follows:
			For the years ended December 31,
			2013			2012
	Expected term (years)		5.5			5.5 - 6.5
	Volatility		36	%		36	%
	Risk-free interest rate		0.79	%		0.60 - 1.40%
	Dividend yield		—			—
Schedule of Share-based Compensation, Stock Options, Activity	The following table summarizes stock option activity:
		Number of shares outstanding			Weighted-average exercise price				Weighted-average remaining contractual life (years)	Aggregate intrinsic value
	Balance at December 31, 2011	4,547			$	2.62			6	$	16,218
	Options granted (weighted average fair value of $1.59 per share)	1,892			$	5.35
	Options exercised	(3,764	)		$	2.43				$	11,300
	Options forfeited	(173	)		$	5.94
	Balance at December 31, 2012	2,502			$	4.88			9	$	6,828
	Options granted (weighted average fair value of $2.59 per share)	9			$	7.59
	Balance at December 31, 2013	2,511			$	4.88			8	$	32,001
	Options exercised	(711	)		$	3.9				$	8,963
	Options forfeited	(58	)		$	5.75
	Balance at December 31, 2014	1,742			$	5.25			7	$	19,136
	Options vested and expected to vest - December 31, 2014	1,742			$	5.25			7	$	19,136
	Options exercisable - December 31, 2014	1,292			$	5.13			7	$	14,343

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation	The following table provides a reconciliation of the beginning and ending balances for the Company's contingent consideration liability measured at fair value using Level 3 inputs:
		Contingent consideration liability (level 3 measurement)
	Balance at December 31, 2013	$	—
	Acquisition of Sport Truck	19,035
	Losses recorded for fair value adjustments	2,217
	Balance at December 31, 2014	$	21,252

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Calculation of Basic and Diluted Earnings Per Share	The following table presents the calculation of basic and diluted earnings per share:
		For the years ended December 31,
		2014		2013		2012
	Net income	$	27,686	$	24,102	$	14,210
	Weighted average shares used to compute basic earnings per share	36,756		34,571		32,059
	Dilutive effect of employee stock plans	1,051		1,134		456
	Weighted average shares used to compute diluted earnings per share	37,807		35,705		32,515
	Earnings per share:
	Basic	$	0.75	$	0.7	$	0.44
	Diluted	$	0.73	$	0.68	$	0.44

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	The components of income tax expense are as follows:
		For the years ended December 31,
		2014				2013				2012
	Current:
	Federal	$	15,122			$	10,282			$	8,959
	State	(3,772		)		3,135				2,406
	Foreign	680				385				—
	Total	12,030				13,802				11,365
	Deferred:
	Federal	(5,016		)		(2,912		)		(2,674		)
	State	(383		)		(324		)		(510		)
	Total	(5,399		)		(3,236		)		(3,184		)
	Total provision	$	6,631			$	10,566			$	8,181
Schedule of Income before Income Tax, Domestic and Foreign	The Company's income before provision for income taxes was subject to taxes in the following jurisdictions for the following periods:
		For the years ended December 31,
		2014				2013				2012
	United States	$	27,162			$	35,098			$	23,035
	Foreign	7,155				(430		)		(644		)
		$	34,317			$	34,668			$	22,391
Schedule of Effective Income Tax Rate Reconciliation	The following table presents a reconciliation of the statutory federal rate and the Company’s effective tax rate for the periods presented:
		For the years ended December 31,
		2014			2013			2012
	Tax at federal statutory rate	35	%		35	%		35	%
	State taxes, net of federal benefit	1.5			4.7			4.8
	Reapportionment benefit	(11.8	)		—			—
	Change in liability for unrecognized tax benefits	(4.0	)		(3.7	)		—
	Manufacturing deduction	(2.7	)		(2.9	)		(1.3	)
	Research and development tax credit	(0.8	)		(2.7	)		—
	Stock-based compensation	(0.1	)		0.1			(2.5	)
	Other	2.2			—			0.5
	Total provision	19.3	%		30.5	%		36.5	%
Schedule of Deferred Tax Assets and Liabilities	The following table presents the significant components of the Company’s deferred tax assets and liabilities:
		December 31,
		2014				2013
	Deferred tax assets:
	Accrued liabilities	$	3,767			$	3,464
	Inventory	1,050				466
	State income taxes	1,201				1,165
	Allowance for doubtful accounts	132				72
	Total deferred tax asset	6,150				5,167
	Deferred tax liabilities:
	Intangible assets	(6,616		)		(10,587		)
	Depreciation	(2,356		)		(2,581		)
	Property and equipment	(233		)		(404		)
	Prepaid expenses	(61		)		(110		)
	Total deferred tax liability	(9,266		)		(13,682		)
	Net deferred tax liability	$	(3,116	)		$	(8,515	)
Schedule of Unrecognized Tax Benefits Roll Forward	The following table summarizes the activity related to the Company's unrecognized tax benefits:
		For the years ended December 31,
		2014				2013				2012
	Balance - beginning of period	$	7,796			$	7,292			$	5,410
	Increase related to current year tax positions	1,988				1,896				1,882
	Decrease due to expiration of statute of limitations	(1,489		)		(1,392		)		—
	Decrease due to change in estimated state tax rate	(510		)		—				—
	Balance - end of period	$	7,785			$	7,796			$	7,292

Segments_and_Geographic_Areas_

Segments and Geographic Areas (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Summary of Total Sales by Geographic Location of Customer	The following table summarizes total sales generated by geographic location of the customer:
			For the years ended December 31,
			2014			2013			2012
	United States		$	128,297		$	96,113		$	84,283
	Asia		88,069			89,424			72,223
	Europe		66,876			61,996			61,462
	Rest of the World		23,492			25,213			17,901
	Total sales		$	306,734		$	272,746		$	235,869
Long-lived Assets by Geographic Location	The Company’s long-lived assets by geographic location are as follows:
		December 31,
		2014			2013
	United States	$	17,149		$	12,259
	International	3,180			1,159
	Total long-lived assets	$	20,329		$	13,418
Revenue from External Customers by Products and Services	The following table summarizes total sales by product category:
		For the years ended December 31,
		2014			2013			2012
	Bikes	$	179,192		$	181,019		$	158,276
	Power vehicles	127,542			91,727			77,593
	Total sales	$	306,734		$	272,746		$	235,869

Acquisition_Tables

Acquisition (Tables)	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The Company’s allocation of the purchase price to the net tangible and intangible assets acquired and liabilities assumed is as follows:
	Acquisition consideration
	Cash consideration	$	40,770
	Settlement of pre-existing accounts	473
	Contingent consideration	19,035
	Total consideration at closing	$	60,278
	Fair market values
	Other current and non-current assets	$	10,534
	Property, plant and equipment	4,488
	Customer relationships	19,000
	Trademarks and brands	16,270
	Goodwill	11,962
	Total assets acquired	62,254
	Accounts payable and accrued expenses	1,976
	Total liabilities assumed	1,976
	Purchase price allocation	$	60,278
Business Acquisition, Pro Forma Information
		For the years ended December 31,
		2014		2013
	Pro forma sales	$	316,181	$	304,780
	Pro forma net income	$	28,589	$	24,551

Selected_Quarterly_Financial_D1

Selected Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information	Selected summarized quarterly financial information for 2014 and 2013 is as follows:
		Quarter Ended
		Dec 31,		Sep 30,		Jun 30,		Mar 31,		Dec 31,		Sep 30,		Jun 30,		Mar 31,
		2014		2014		2014		2014		2013		2013		2013		2013
	Sales	$	74,104	$	90,148	$	86,374	$	56,108	$	65,259	$	82,293	$	70,316	$	54,878
	Gross profit	21,903		28,547		26,953		17,017		18,716		25,333		20,365		15,715
	Income from operations	4,229		13,911		11,736		4,747		7,803		14,773		10,143		6,062
	Net income	2,873		10,291		11,581		2,941		4,907		9,924		5,721		3,549
	Earnings per share:
	Basic	$	0.08	$	0.28	$	0.32	$	0.08	$	0.14	$	0.28	$	0.17	$	0.11
	Diluted	$	0.08	$	0.27	$	0.31	$	0.08	$	0.13	$	0.27	$	0.17	$	0.1

Description_of_Business_Basis_3

Description of Business, Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended			0 Months Ended
	Jul. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aug. 13, 2013
Description of Business and Basis of Presentation [Line Items]
Initial public offering (IPO), number of common shares issued	5,750,000
Foreign Currency transaction gain (loss)		$649,000	($5,000)	$17,000
Asset impairment charges		0	0	0
Advertising expense		1,012,000	448,000	534,000
Initial public offering (IPO)
Description of Business and Basis of Presentation [Line Items]
Initial public offering (IPO), number of common shares issued					2,857,000
Initial public offering (IPO), price per share					$15
Proceeds from initial public offering (IPO)					$36,122,000
Initial public offering (IPO) | Shares Offered By Selling Stockholders
Description of Business and Basis of Presentation [Line Items]
Initial public offering (IPO), number of common shares issued					7,000,000
Sales Revenue, Net | Customer A
Description of Business and Basis of Presentation [Line Items]
Concentration risk, percentage		14.00%	17.00%	13.00%
Purchases | Supplier Concentration Risk
Description of Business and Basis of Presentation [Line Items]
Concentration risk, percentage		44.00%	48.00%	43.00%
Accounts Payable
Description of Business and Basis of Presentation [Line Items]
Concentration risk, percentage		38.00%	53.00%
Minimum
Description of Business and Basis of Presentation [Line Items]
Warranty Period		1 year
Maximum
Description of Business and Basis of Presentation [Line Items]
Warranty Period		2 years

Customers_Accounted_for_10_or_

Customers Accounted for 10% or More of Accounts Receivable Balance (Detail) (Accounts Receivable)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Customer A
Concentration Risk [Line Items]
Concentration risk, accounts receivable percentage	17.00%	16.00%
Customer B
Concentration Risk [Line Items]
Concentration risk, accounts receivable percentage	14.00%	11.00%

Activity_in_Allowance_For_Doub

Activity in Allowance For Doubtful Accounts (Detail) (Allowance for Doubtful Accounts, Current, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts, Current
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of period	$366	$440	$372
Add: bad debt expense (benefit)	-10	-45	87
Less: write-offs, net of recoveries	-8	-29	-19
Balance, end of period	$348	$366	$440

Depreciation_and_Amortization_

Depreciation and Amortization Periods for the Company's Property and Equipment (Detail)	12 Months Ended
	Dec. 31, 2014
Machine shop equipment | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	10 years
Machine shop equipment | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	15 years
Machinery and manufacturing equipment | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Machinery and manufacturing equipment | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	10 years
Office equipment and furniture | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	3 years
Office equipment and furniture | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Transportation equipment
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	5 years
Building
Property, Plant and Equipment [Line Items]
Property and equipment, estimated useful life	39 years

Inventory_Detail

Inventory (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]
Raw materials	$39,655	$30,299
Work-in-process	1,568	1,155
Finished goods	17,968	11,329
Total inventory	$59,191	$42,783

Property_and_Equipment_Detail

Property and Equipment (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$35,096	$25,007
Accumulated depreciation and amortization	-14,767	-11,589
Net property and equipment	20,329	13,418
Depreciation	3,306	2,381	1,889
Machinery and and manufacturing equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	18,318	13,744
Office equipment and furniture
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	5,297	4,243
Transportation equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	2,041	1,495
Building and land
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	3,469	0
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment gross	$5,971	$5,525

Intangible_Assets_Excluding_Go

Intangible Assets Excluding Goodwill (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Intangible Asset Excluding Goodwill [Line Items]
Gross carrying amount	$71,090	$45,544
Accumulated amortization	-37,976	-31,560
Net carrying amount	33,114	13,984
Intangible assets, excluding goodwill	65,184	27,284
Trademarks
Intangible Asset Excluding Goodwill [Line Items]
Intangible assets, not subject to amortization	32,070	13,300
Customer relationships
Intangible Asset Excluding Goodwill [Line Items]
Gross carrying amount	36,555	12,209
Accumulated amortization	-9,144	-6,939
Net carrying amount	27,411	5,270
Weighted average life (years)	13 years	10 years
Core technology
Intangible Asset Excluding Goodwill [Line Items]
Gross carrying amount	33,700	32,500
Accumulated amortization	-28,438	-24,375
Net carrying amount	5,262	8,125
Weighted average life (years)	8 years	7 years
Patents
Intangible Asset Excluding Goodwill [Line Items]
Gross carrying amount	835	835
Accumulated amortization	-394	-246
Net carrying amount	$441	$589
Weighted average life (years)	5 years	5 years

Intangibles_Net_Additional_Inf

Intangibles, Net - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets, Net [Abstract]
Amortization of intangibles	$6,424	$5,378	$5,315

Intangibles_net_Rollforward_Ac

Intangibles, net - Rollforward Activity (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Finite-lived Intangible Assets [Roll Forward]
Balance as of December 31, 2013	$31,925
Acquisitions	26,728
Currency translation and other adjustments	92
Balance as of December 31, 2014	$58,745

Intangibles_net_Future_Amortiz

Intangibles, net - Future Amortization Expense (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]
2015	$7,366
2016	2,754
2017	2,691
2018	2,691
2019	2,618
Thereafter	14,994
Net carrying amount	$33,114	$13,984

Accrued_Expenses_Detail

Accrued Expenses (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]
Payroll and related expenses	$5,626	$6,007
Warranty	4,215	3,857	4,582	2,799
Income tax payable	1,405	2,469
Other accrued expenses	882	118
Total	$12,128	$12,451

Activity_Related_to_Warranties

Activity Related to Warranties (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning warranty liability	$3,857	$4,582	$2,799
Charge to cost of sales	3,172	4,367	5,180
Fair value of warranty assumed in acquisition	382	0	0
Costs incurred	-3,196	-5,092	-3,397
Ending warranty liability	$4,215	$3,857	$4,582

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended
	Jun. 15, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]
Estimated annual cost		$150,000
Dividends	67,000,000
Write-off of unamortized loan origination costs from related party debt		0	1,405,000	0
Related party, interest expense on prior credit facility			2,179,000	2,794,000
Operating Leases, leases expense		3,214,000	2,953,000	2,909,000
Related Party Transactions
Related Party Transaction [Line Items]
Related party, management fees			308,000	500,000
Operating Leases, leases expense		$1,186,000	$1,156,000	$1,131,000

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 12, 2014
Amended and Restated 2013 Credit Facility | Term Loan
Debt Instrument [Line Items]
Term loan amount	50,000,000
Amended and Restated 2013 Credit Facility | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
LIBOR RATE	0.16%
Amended and Restated 2013 Credit Facility | London Interbank Offered Rate (LIBOR) | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Amended and Restated 2013 Credit Facility | London Interbank Offered Rate (LIBOR) | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	2.50%
Amended and Restated 2013 Credit Facility | Prime Rate
Debt Instrument [Line Items]
prime interest rate	3.25%
Amended and Restated 2013 Credit Facility | Prime Rate | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Amended and Restated 2013 Credit Facility | Prime Rate | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Amended and Restated 2013 Credit Facility, First Amendment | Term Loan
Debt Instrument [Line Items]
Term loan amount		56,750,000
Increase in Term loan principal amount		$30,000,000

Summary_of_Amended_Restated_20

Summary of Amended & Restated 2013 Credit Facility (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]
Amount outstanding	$0	$8,000
Available borrowing capacity	60,000	52,000
Maximum borrowing capacity	$60,000	$60,000

Future_Payments_for_Longterm_D

Future Payments for Long-term Debt (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]
2015	$2,837
2016	2,838
2017	4,256
2018	4,256
2019	35,813
Total	50,000
Less: current portion	2,837	0
Long-term debt less current portion	$47,163	$0

Commitment_and_Contingencies_A

Commitment and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Operating Leases, leases expense	$3,214	$2,953	$2,909
Operating Leased Assets [Line Items]
Future minimum lease payments in 2018	1,341
Future minimum lease payments in 2019	54
Contingent consideration, maximum	46,195
El Cajon Facility
Operating Leased Assets [Line Items]
Incremental increase in annual minimum lease payments	295
Future minimum lease payments in 2018	786
Future minimum lease payments in 2019	847
Future minimum lease payments in 2020	1,018
Future minimum lease payments in 2021	$146

Future_Minimum_Lease_Payments_

Future Minimum Lease Payments under Operating Leases (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Operating Lease Future Minimum Payments Due [Abstract]
2015	$3,428
2016	3,364
2017	2,892
2018	1,341
2019	54
Thereafter	0
Operating leases future minimum payments	11,079
Third Party
Operating Lease Future Minimum Payments Due [Abstract]
2015	2,225
2016	2,161
2017	1,689
2018	740
2019	54
Thereafter	0
Operating leases future minimum payments	6,869
Related Party
Operating Lease Future Minimum Payments Due [Abstract]
2015	1,203
2016	1,203
2017	1,203
2018	601
2019	0
Thereafter	0
Operating leases future minimum payments	$4,210

Stockholders_Equity_Secondary_

Stockholders' Equity - Secondary Offering (Details) (USD $)	1 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jul. 31, 2014	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Issuance of common stock (in shares)	5,750,000
Issuance of common stock, price per share (in usd per share)	$15.50
Shares issued upon underwriters' exercise of option to purchase additional shares (in shares)		750,000
Expenses incurred in connection with offering of shares		$469

Stockholders_Equity_Share_Repu

Stockholders' Equity - Share Repurchase Program (Details) (USD $)	Dec. 31, 2014	Nov. 03, 2014
In Thousands, unless otherwise specified
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share repurchase program, authorized amount		$40,000
Share repurchase program, remaining authorized repurchase amount	$39,429

Stockholders_Equity_Equity_Inc

Stockholders' Equity - Equity Incentive Plans (Detail) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance	5,299,000
Number of shares available for grant	2,775,985
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number		902,000
Award vesting period	4 years
Award vesting percentage	25.00%
Award expiration period	10 years
Period for recognition of unrecognized stock-based compensation expense	2 years 3 months 13 days
Unrecognized stock-based compensation expense related to stock options	$693
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense related to RSUs	$11,135
Period for recognition of unrecognized stock-based compensation expense	2 years 11 months 6 days
Minimum | Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year
Maximum | Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years

Summary_of_Allocation_of_Stock

Summary of Allocation of Stock-Based Compensation in Accompanying Consolidated Statements of Income (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$4,044	$2,500	$2,148
Cost of sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	43	23	0
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	279	158	160
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	88	53	29
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	3,634	2,266	1,959
Restricted Stock Units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	3,401	897	0
Stock Option
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$643	$1,603	$2,148

Summary_of_Unvested_RSUs_Activ

Summary of Unvested RSUs Activity (Detail) (Restricted Stock Units (RSUs), USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Restricted Stock Units (RSUs)
Number of shares outstanding
Unvested outstanding, beginning balance (in shares)	516	0
Granted (in shares)	783	516
Canceled (in shares)	-386
Vested (in shares)	-133
Unvested outstanding, ending balance (in shares)	780	516
Weighted average grant date fair value
Unvested outstanding, beginning balance (in usd per share)	$17.53	$0
Granted (in usd per share)	$17.30	$17.53
Canceled (in usd per share)	$17.52
Vested (in usd per share)	$17.53
Unvested outstanding, ending balance (in usd per share)	$17.30	$17.53

Assumptions_Used_to_Value_Stoc

Assumptions Used to Value Stock-Based Awards Granted (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term	5 years 6 months
Volatility	36.00%	36.00%
Risk-free interest rate	0.79%
Risk-free interest rate, minimum		0.60%
Risk-free interest rate, maximum		1.40%
Dividend yield	0.00%	0.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term		5 years 6 months
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term		6 years 6 months

Stockholders_Equity_Stock_Opti

Stockholders' Equity - Stock Option Activity (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Number of shares outstanding
Options outstanding, beginning balance (in shares)	2,511	2,502	4,547
Options granted (in shares)		9	1,892
Options exercised (in shares)	-711		-3,764
Options forfeited (in shares)	-58		-173
Options outstanding, ending balance (in shares)	1,742	2,511	2,502	4,547
Options vested and expected to vest (in shares)	1,742
Options exercisable (in shares)	1,292
Weighted-average exercise price
Weighted-average exercise price, beginning of period (in usd per share)	$4.88	$4.88	$2.62
Options granted (in usd per share)		$7.59	$5.35
Options exercised (in usd per share)	$3.90		$2.43
Options forfeited (in usd per share)	$5.75		$5.94
Weighted-average exercise price, ending balance (in usd per share)	$5.25	$4.88	$4.88	$2.62
Options vested and expected to vest (in usd per share)	$5.25
Options exercisable (in usd per share)	$5.13
Weighted average remaining contractual life
Options outstanding	7 years	8 years	9 years	6 years
Options vested and expected to vest	7 years
Options exercisable	7 years
Aggregate intrinsic value
Options outstanding	$19,136	$32,001	$6,828	$16,218
Options exercised		8,963	11,300
Options vested and expected to vest	19,136
Options exercisable	$14,343

Stock_Option_Activity_Weighted

Stock Option Activity Weighted Average Fair Value (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Options granted, weighted average fair value	$2.59	$1.59

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Details)	0 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Earn out percentage, lower limit		70.00%
Earn out percentage, upper limit		100.00%
Earn out percentage		75.00%
Expected volatility rate	41.00%	35.00%

Fair_Value_Measurements_Level_

Fair Value Measurements - Level 3 Roll Forward (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at December 31, 2013	$0
Acquisition of Sport Truck	19,035
Losses recorded for fair value adjustments	2,217
Balance at December 31, 2014	$21,252

Calculation_of_Basic_and_Dilut

Calculation of Basic and Diluted Earnings Per Share (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Net income	$2,873	$10,291	$11,581	$2,941	$4,907	$9,924	$5,721	$3,549	$27,686	$24,102	$14,210
Weighted average shares used to compute basic earnings per share (in shares)									36,756	34,571	32,059
Dilutive effect of employee stock plans (in shares)									1,051	1,134	456
Weighted average shares used to compute diluted earnings per share (in shares)									37,807	35,705	32,515
Basic (in dollars per share)	$0.08	$0.28	$0.32	$0.08	$0.14	$0.28	$0.17	$0.11	$0.75	$0.70	$0.44
Diluted (in dollars per share)	$0.08	$0.27	$0.31	$0.08	$0.13	$0.27	$0.17	$0.10	$0.73	$0.68	$0.44

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Anti-dilutive shares excluded from calculation of diluted earnings per share	0	0	0

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended			0 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Feb. 03, 2015	Dec. 31, 2011
Income Tax Contingency [Line Items]
Effective tax rates	19.30%	30.50%	36.50%
Federal statutory rate	35.00%	35.00%	35.00%
Other tax expense (benefit)	$4,063
Tax Benefit, Per Share, Per Basic and Diluted	$0.11
Research and development credit		440
Unrecognized tax benefits	7,785	7,796	7,292		5,410
Unrecognized tax benefits that would impact effective tax rate	7,007
Possible reduction in unrecognized tax benefit over fiscal year	1,323
Interest and penalties related to uncertain tax positions	0	225
Subsequent Event
Income Tax Contingency [Line Items]
Tax credit period				4 years
Tax credit from State of California				$1,700

Components_of_Income_Tax_Expen

Components of Income Tax Expense (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current:
Federal	$15,122	$10,282	$8,959
State	-3,772	3,135	2,406
Foreign	680	385	0
Total current	12,030	13,802	11,365
Deferred:
Federal	-5,016	-2,912	-2,674
State	-383	-324	-510
Total deferred	-5,399	-3,236	-3,184
Total provision	$6,631	$10,566	$8,181

Income_Taxes_Income_Before_Pro

Income Taxes - Income Before Provision by Jurisdiction (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
United States	$27,162	$35,098	$23,035
Foreign	7,155	-430	-644
Income before income taxes	$34,317	$34,668	$22,391

Reconciliation_of_Statutory_Fe

Reconciliation of Statutory Federal Rate and Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]
Tax at federal statutory rate	35.00%	35.00%	35.00%
State taxes, net of federal benefit	1.50%	4.70%	4.80%
Reapportionment benefit	-11.80%	0.00%	0.00%
Change in liability for unrecognized tax benefits	-4.00%	-3.70%	0.00%
Manufacturing deduction	-2.70%	-2.90%	-1.30%
Research and development tax credit	-0.80%	-2.70%	0.00%
Stock-based compensation	-0.10%	0.10%	-2.50%
Other	2.20%	0.00%	0.50%
Total provision	19.30%	30.50%	36.50%

Significant_Components_of_Defe

Significant Components of Deferred Tax Assets and Liabilities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Deferred tax assets:
Accrued liabilities	$3,767	$3,464
Inventory	1,050	466
State income taxes	1,201	1,165
Allowance for doubtful accounts	132	72
Total deferred tax asset	6,150	5,167
Deferred tax liabilities:
Intangible assets	-6,616	-10,587
Depreciation	-2,356	-2,581
Property and equipment	-233	-404
Prepaid expenses	-61	-110
Total deferred tax liability	-9,266	-13,682
Net deferred tax liability	($3,116)	($8,515)

Income_Taxes_Unrecognized_Tax_

Income Taxes Unrecognized Tax Benefit - activity (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Balance - beginning of period	$7,796	$7,292	$5,410
Increase related to current year tax positions	1,988	1,896	1,882
Decrease due to expiration of statute of limitations	-1,489	-1,392	0
Decrease due to change in estimated state tax rate	-510	0	0
Balance - end of period	$7,785	$7,796	$7,292

Retirement_Plan_Additional_Inf

Retirement Plan - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Matching contribution made under the plan	$233	$205	$189

Summary_of_Total_Sales_by_Geog

Summary of Total Sales by Geographic Location of Customer (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
									segment
Segment Reporting [Abstract]
Number of operating segments									1
Number of reportable segments									1
Segment Reporting Information [Line Items]
Sales	$74,104	$90,148	$86,374	$56,108	$65,259	$82,293	$70,316	$54,878	$306,734	$272,746	$235,869
United States
Segment Reporting Information [Line Items]
Sales									128,297	96,113	84,283
Asia
Segment Reporting Information [Line Items]
Sales									88,069	89,424	72,223
Europe
Segment Reporting Information [Line Items]
Sales									66,876	61,996	61,462
Rest of the World
Segment Reporting Information [Line Items]
Sales									$23,492	$25,213	$17,901

Longlived_Assets_by_Geographic

Long-lived Assets by Geographic Location (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Segment Reporting Information [Line Items]
Long-lived assets	$20,329	$13,418
United States
Segment Reporting Information [Line Items]
Long-lived assets	17,149	12,259
International
Segment Reporting Information [Line Items]
Long-lived assets	$3,180	$1,159

Segments_and_Geographic_Areas_1

Segments and Geographic Areas Summary of Sales by Products (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue from External Customer [Line Items]
Sales	$74,104	$90,148	$86,374	$56,108	$65,259	$82,293	$70,316	$54,878	$306,734	$272,746	$235,869
Bikes
Revenue from External Customer [Line Items]
Sales									179,192	181,019	158,276
Power vehicles
Revenue from External Customer [Line Items]
Sales									$127,542	$91,727	$77,593

Acquisition_Additional_Informa

Acquisition - Additional Information (Details) (USD $)	12 Months Ended			0 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2014	Dec. 12, 2014
Business Acquisition [Line Items]
Cash consideration	$70,938	$1,117	$0
Contingent consideration, maximum	46,195
Goodwill	58,745	31,925
Federal statutory rate	35.00%	35.00%	35.00%
Sport Truck USA, Inc.
Business Acquisition [Line Items]
Cash consideration				40,770
Contingent consideration, asset				1,432
Contingent consideration, asset, period for recognition				3 years
Settlement of pre-existing accounts				473
Contingent consideration, maximum	29,295
Contingent consideration at fair value	19,035	0	0
Goodwill				11,962
Transaction costs	1,402
Financing costs	278
Total Sport Truck sales included in the condensed consolidated statements of income	33,162
Sport Truck net income included in the condensed consolidated statements of income	2,974
Losses recorded for fair value adjustments	2,217
Federal statutory rate	35.00%
Total consideration at closing				60,278
Race Face Performance and Easton Cycling
Business Acquisition [Line Items]
Contingent consideration at fair value					16,900
Financing costs					166
Total consideration at closing					30,168
Transaction costs					1,142
Prepaids and Other Current Assets | Sport Truck USA, Inc.
Business Acquisition [Line Items]
Contingent consideration, asset	$476
Customer relationships
Business Acquisition [Line Items]
Useful life of finite-lived intangibles	13 years	10 years
Customer relationships | Sport Truck USA, Inc.
Business Acquisition [Line Items]
Useful life of finite-lived intangibles	15 years

Acquisition_Assets_Acquired_an

Acquisition - Assets Acquired and Liabilities Assumed (Details) (USD $)	12 Months Ended			0 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2014
Acquisition consideration
Cash consideration	$70,938	$1,117	$0
Fair market values
Goodwill	58,745	31,925
Sport Truck USA, Inc.
Acquisition consideration
Cash consideration				40,770
Settlement of pre-existing accounts				473
Contingent consideration - acquisition of Sport Truck USA, Inc.	19,035	0	0
Total consideration at closing				60,278
Fair market values
Other current and non-current assets				10,534
Property, plant and equipment				4,488
Customer relationships				19,000
Trademarks and brands				16,270
Goodwill				11,962
Total assets acquired				62,254
Accounts payable and accrued expenses				1,976
Total liabilities assumed				1,976
Purchase price allocation				$60,278

Acquisition_Pro_Forma_Details

Acquisition - Pro Forma (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Business Combinations [Abstract]
Pro forma sales	$316,181	$304,780
Pro forma net income	$28,589	$24,551

Selected_Quarterly_Financial_D2

Selected Quarterly Financial Data (Unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Sales	$74,104	$90,148	$86,374	$56,108	$65,259	$82,293	$70,316	$54,878	$306,734	$272,746	$235,869
Gross profit	21,903	28,547	26,953	17,017	18,716	25,333	20,365	15,715	94,420	80,129	62,829
Income from operations	4,229	13,911	11,736	4,747	7,803	14,773	10,143	6,062	34,623	38,781	26,154
Net income	$2,873	$10,291	$11,581	$2,941	$4,907	$9,924	$5,721	$3,549	$27,686	$24,102	$14,210
Earnings Per Share:
Basic (in dollars per share)	$0.08	$0.28	$0.32	$0.08	$0.14	$0.28	$0.17	$0.11	$0.75	$0.70	$0.44
Diluted (in dollars per share)	$0.08	$0.27	$0.31	$0.08	$0.13	$0.27	$0.17	$0.10	$0.73	$0.68	$0.44