Fox Factory Holding (FOXF) 10-Q6 Nov 132013 Q3 Quarterly reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
Document and Entity Information	Sep. 30, 2013	Nov. 06, 2013
Document Information [Line Items]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'FOXF	'
Entity Registrant Name	'Fox Factory Holding Corp	'
Entity Central Index Key	'0001424929	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Non-accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	36,317,087

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:	'	'
Cash and cash equivalents	$3,496	$15
Accounts receivable (net of allowance for doubtful accounts of $352 and $440 at September 30, 2013 and December 31, 2012, respectively)	39,246	25,224
Inventory	46,393	34,255
Prepaids and other current assets	2,506	2,242
Deferred tax assets	3,350	3,405
Total current assets	94,991	65,141
Property and equipment, net	12,540	11,789
Loan fees, net	755	'
Loan fees, net-related party	'	1,665
Goodwill	31,372	31,372
Intangibles, net	28,130	32,153
Total assets	167,788	142,120
Current liabilities:	'	'
Accounts payable	22,429	19,551
Accrued expenses	12,052	10,156
Liability reserve for uncertain tax positions	7,320	7,292
Current portion of long-term debt-related party	'	3,000
Total current liabilities	41,801	39,999
Line of credit	24,500	'
Line of credit-related party	'	750
Long-term debt, less current portion-related party	'	55,500
Deferred rent	1,010	1,132
Deferred tax liabilities	13,890	15,155
Total liabilities	81,201	112,536
Commitments and contingencies (Note 9)	'	'
Stockholders' equity	'	'
Common stock, $0.001 par value-69,675,000 authorized as of September 30, 2013 and December 31, 2012; 36,317,087 and 33,459,944 shares issued and outstanding as of September 30, 2013 and December 31, 2012, respectively;	36	33
Additional paid-in capital	86,963	49,169
Accumulated other comprehensive income	12	1
Accumulated deficit	-424	-19,619
Total stockholders' equity	86,587	29,584
Total liabilities and stockholders' equity	$167,788	$142,120

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Accounts receivable, allowance for doubtful accounts	$352	$440
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	69,675,000	69,675,000
Common stock, shares issued	36,317,087	33,459,944
Common stock, shares outstanding	36,317,087	33,459,944

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Sales	$82,293	$72,864	$207,487	$179,256
Cost of sales	56,960	52,745	146,074	129,592
Gross profit	25,333	20,119	61,413	49,664
Operating expenses:	'	'	'	'
Sales and marketing	3,621	3,150	10,382	9,288
Research and development	2,500	2,427	7,442	7,196
General and administrative	3,098	2,223	8,588	7,069
Amortization of purchased intangibles	1,341	1,341	4,023	3,974
Total operating expenses	10,560	9,141	30,435	27,527
Income from operations	14,773	10,978	30,978	22,137
Other expense, net:	'	'	'	'
Interest expense	-2,015	-1,424	-3,968	-2,294
Other income (expense), net	38	14	19	-287
Other expense, net	-1,977	-1,410	-3,949	-2,581
Income before income taxes	12,796	9,568	27,029	19,556
Provision for income taxes	2,872	4,099	7,834	7,131
Net income	$9,924	$5,469	$19,195	$12,425
Earnings per share:	'	'	'	'
Basic	$0.28	$0.16	$0.56	$0.39
Diluted	$0.27	$0.16	$0.55	$0.39
Weighted average shares used to compute earnings per share:	'	'	'	'
Basic	35,013	33,465	33,983	31,588
Diluted	36,423	33,718	35,108	31,906

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income	$9,924	$5,469	$19,195	$12,425
Other comprehensive income:	'	'	'	'
Foreign currency translation adjustments	-10	5	11	5
Other comprehensive income	-10	5	11	5
Comprehensive income	$9,914	$5,474	$19,206	$12,430

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
OPERATING ACTIVITIES:	'	'
Net income	$19,195	$12,425
Adjustments to reconcile net income to net cash used in operating activities:	'	'
Depreciation and amortization	5,757	5,320
Provision for doubtful accounts	-88	85
Stock-based compensation	1,675	1,733
Excess tax benefit from exercise of stock options	'	-5,755
(Gain) loss on disposal of property and equipment	-7	250
Write-off of unamortized loan origination costs from related party debt	1,405	'
Deferred taxes	-1,182	-1,472
City of Watsonville loan credit	'	-4
Changes in operating assets and liabilities:	'	'
Accounts receivable	-13,934	-15,156
Inventory	-12,138	-11,165
Income taxes receivable	'	6,458
Prepaids and other current assets	-264	-113
Other assets	284	-1,332
Accounts payable	2,605	8,120
Accrued expenses	1,896	755
Deferred rent	-122	693
Net cash provided by operating activities	5,082	842
INVESTING ACTIVITIES:	'	'
Purchases of property and equipment	-2,485	-3,882
Proceeds from sale of property and equipment	7	'
Purchase of intangible assets	'	-835
Net cash used in investing activities	-2,478	-4,717
FINANCING ACTIVITIES:	'	'
Payments for deferred offering costs of initial public offering	-3,462	'
Proceeds from initial public offering, net of underwriter fees	39,857	'
Proceeds from equity issuance	'	7,204
Excess tax benefit from exercise of stock options	'	5,755
Dividends paid	'	-67,000
Proceeds from line of credit, net of origination fees of $779	27,721	'
Payments on line of credit	-4,000	'
Proceeds from related party line of credit	31,858	29,135
Payments on related party line of credit	-32,608	-16,335
Proceeds from issuance of related party debt	'	60,000
Repayment of related party debt	-58,500	-14,589
Net cash provided by financing activities	866	4,170
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	11	5
CHANGE IN CASH AND CASH EQUIVALENTS	3,481	300
CASH AND CASH EQUIVALENTS-Beginning of period	15	114
CASH AND CASH EQUIVALENTS-End of period	3,496	414
SUPPLEMENTAL DISCLOSURES OF OTHER CASH FLOW INFORMATION:	'	'
Cash paid for income taxes	7,027	2,145
Cash paid for interest	2,446	1,729
Deferred offering costs recorded in accounts payable	$273	'

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (Parenthetical) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013
Line of credit, origination fees	$779

Description_of_Business_and_Ba

Description of Business and Basis of Presentation	9 Months Ended
Description of Business and Basis of Presentation	Sep. 30, 2013
Description of Business and Basis of Presentation	'
	1. Description of Business and Basis of Presentation
	Fox Factory Holding Corp. (the “Company”) is a designer, manufacturer and marketer of high end suspension products for mountain bikes and powered vehicles, which includes all-terrain vehicles, snowmobiles and other off-road vehicles. The Company acts both as a tier one supplier to leading action sports original equipment manufacturers (“OEM”) and provides aftermarket products to retailers and distributors (“AM”).
	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 2,857,143 shares of common stock and the selling stockholders sold a total of 7,000,000 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 $36.1 million from its sale of 2,857,143 shares of common stock after deducting underwriting discounts and 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 under its Prior Credit Facility (see Note 8 – Debt).
	Basis of Presentation— The accompanying condensed consolidated financial statements are unaudited. These unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Certain information and footnote disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Accordingly, these interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements contained in the Company’s Prospectus filed with the SEC pursuant to Rule 424(b) under the Securities Act of 1933, as amended (the “Securities Act”) on August 8, 2013 (the “Prospectus”). The condensed consolidated balance sheet as of December 31, 2012, included herein was derived from the audited consolidated financial statements as of that date, but does not include all disclosures required by GAAP, including notes to the financial statements.
	The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and, in the opinion of management, include all adjustments (consisting primarily of normal recurring adjustments) necessary for the fair presentation of the interim periods presented.
	Principles of Consolidation— These condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.

Summary_of_Significant_Account

Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2013

Summary of Significant Accounting Policies

2. Summary of Significant Accounting Policies

Use of Estimates— The preparation of the Company’s condensed 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.

Certain Significant Risks and Uncertainties—The Company is subject to those risks common in manufacture-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.

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:

As of September 30,

As of December 31,

2013

2012

Customer A

18%

13%

Customer B

11%

12%

Customer C

12%

11%

The following customers accounted for 10% or more of total sales:

For the three months

For the nine months

ended September 30,

2013

2012

2013

2012

Customer A

17%

11%

18%

13%

Customer B

11%

Represents less than 10%

The Company depends on a limited number of vendors to supply component parts for its products. The Company purchased approximately 54 % and 57% of its product components for the three months ended September 30, 2013 and 2012, respectively, from ten vendors. The Company purchased approximately 53% and 56% of its product components for the nine months ended September 30, 2013 and 2012, respectively, from ten vendors. At September 30, 2013 and December 31, 2012 amounts due to these vendors represented approximately 45% and 43% of accounts payable, 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.

Inventory

Inventory	9 Months Ended
Inventory	Sep. 30, 2013
Inventory	'
	3. Inventory
	Inventory consisted of the following (in thousands):


		As of September 30,		As of December 31,
		2013		2012
	Raw materials	$	33,177	$	25,822
	Work-in-process		2,058		1,460
	Finished goods		11,158		6,973

	Total inventory	$	46,393	$	34,255

Property_and_Equipment_net

Property and Equipment, net	9 Months Ended
Property and Equipment, net	Sep. 30, 2013
Property and Equipment, net	'
	4. Property and Equipment, net
	Property and equipment consisted of the following (in thousands):


		As of September 30,			As of December 31,
		2013			2012
	Machinery and manufacturing equipment	$	12,677		$	11,099
	Office equipment and furniture		4,048			4,095
	Transportation equipment		1,472			1,315
	Leasehold improvements		5,287			4,729

	Total		23,484			21,238
	Accumulated depreciation and amortization		(10,944	)		(9,449	)

	Net property and equipment	$	12,540		$	11,789


	Depreciation and amortization expense of property and equipment was approximately $0.6 million and $0.5 for the three months ended September 30, 2013 and 2012, respectively, and approximately $1.7 million and $1.3 million for the nine months ended September 30, 2013 and 2012, respectively.

Intangible_Assets_net

Intangible Assets, net	9 Months Ended
Intangible Assets, net	Sep. 30, 2013
Intangible Assets, net	'
	5. Intangible Assets, net
	Intangible assets, excluding goodwill, are comprised of the following (dollars in thousands):


		Gross		Accumulated			Net		Weighted
		carrying		amortization			carrying		average life
		amount					amount		(years)
	September 30, 2013:
	Customer relationships OEM	$	7,400	$	(3,546	)	$	3,854		11
	Customer relationships AM		4,300		(3,091	)		1,209		7
	Core technology		32,500		(23,359	)		9,141		7
	Patents		835		(209	)		626		5

	Total		45,035		(30,205	)		14,830
	Trademarks, not subject to amortization							13,300

	Total						$	28,130

	December 31, 2012:
	Customer relationships OEM	$	7,400	$	(3,083	)	$	4,317		11
	Customer relationships AM		4,300		(2,688	)		1,612		7
	Core technology		32,500		(20,313	)		12,187		7
	Patents		835		(98	)		737		5

	Total		45,035		(26,182	)		18,853
	Trademarks, not subject to amortization							13,300

	Total						$	32,153

	Amortization of intangibles was approximately $1.3 million and $1.3 million for the three months ended September 30, 2013 and 2012, respectively and $4.0 million and $4.0 million for the nine months ended September 30, 2013 and 2012, respectively.

Accrued_Expenses

Accrued Expenses	9 Months Ended
Accrued Expenses	Sep. 30, 2013
Accrued Expenses	'
	6. Accrued Expenses
	Accrued expenses consisted of the following (in thousands):


			As of September 30,			As of December 31,
			2013			2012
	Payroll and related expenses		$	5,866		$	5,256
	Warranty			4,172			4,582
	Related party—Compass(1)			—			292
	Income tax payable			1,999			9
	Other accrued expenses			15			17

	Total		$	12,052		$	10,156


	-1	Amount relates to interest and management fees payable to Compass.
	The Company’s warranty liability is included as a component of accrued liabilities in the condensed consolidated balance sheets. Activity related to warranties is as follows (in thousands):


			For the three months						For the nine months
			ended September 30,						ended September 30,
			2013			2012			2013			2012
	Beginning warranty liability		$	3,995		$	2,857		$	4,582		$	2,799
	Charge to cost of sales			1,432			1,948			3,119			3,377
	Costs incurred			(1,255	)		(872	)		(3,529	)		(2,243	)

	Ending warranty liability		$	4,172		$	3,933		$	4,172		$	3,933

Related_Party_Transactions

Related Party Transactions	9 Months Ended
Related Party Transactions	Sep. 30, 2013
Related Party Transactions	'
	7. Related Party Transactions
	During fiscal year 2008, the Company entered into a credit agreement with its majority stockholder, Compass Group Diversified Holdings LLC, (Compass) which provided a revolving line of credit facility and a term loan facility (“Prior Credit Facility”). Amounts outstanding under the Prior Credit Facility were $0 and $59.3 million as of September 30, 2013 and December 31, 2012, respectively. Interest expense on the Prior Credit Facility was approximately $0.5 million and $1.3 million for the three months ended September 30, 2013 and 2012, respectively and $2.2 million and $1.8 million for the nine months ended September 30, 2013 and 2012, respectively. In addition, there were annual management fees of $0.1 million paid to an affiliate of Compass for the three months ended September 30, 2013 and 2012 and $0.3 million and $0.4 million for the nine months ended September 30, 2013 and 2012, respectively. In August 2013, the Company repaid all loans to the majority stockholder and cancelled the management fee arrangement.
	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, director, 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. Rent expense under this lease was $0.3 million and $0.3 million for each of the three months ended September 30, 2013 and 2012, respectively, and $0.9 million and $0.8 million for the nine months ended September 30, 2013 and 2012, respectively.

Debt

Debt	9 Months Ended
Debt	Sep. 30, 2013
Debt	'
	8. Debt
	2013 Credit Facility
	In the third quarter of 2013, in connection with its IPO, the Company entered into a new revolving credit facility with SunTrust Bank and the other lenders named therein (2013 Credit Facility) and borrowed $28.5 million thereunder. Of such borrowings, $21.6 million was used to pay off the Company’s remaining indebtedness that was then due under the Prior Credit Facility, and the remaining amount of such borrowings was used to pay IPO related fees and expenses and provide additional working capital.
	The 2013 Credit Facility provides for interest at 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%. The 2013 Credit Facility is secured, subject to permitted liens and other agreed upon exceptions, by a first-priority lien on and perfected security interest in substantially all of the Company’s and its subsidiary’s assets including accounts receivable and a pledge of the equity in its operating subsidiary. In addition, the 2013 Credit Facility requires that the Company satisfy a maximum total leverage ratio and a fixed charge coverage ratio. The 2013 Credit Facility contains customary representations and warranties and customary events of default, as well as certain affirmative and negative covenants, including restrictions on: indebtedness; liens; mergers, consolidations and acquisitions; sales of assets; engaging in business other than our current business and those reasonably related thereto; investments; dividends; redemptions and distributions; affiliate transactions; and other restrictions. The Company was in compliance with the covenants of the 2013 Credit Facility as of September 30, 2013. The balance at September 30, 2013 was classified as a long-term liability based on the maturity date of the 2013 Credit Facility.
	The following table summarizes the 2013 Credit Facility (dollars in thousands):


		As of September 30,
		2013
	Amount outstanding	$	24,500
	Available borrowing capacity	$	35,500
	Maximum borrowing capacity	$	60,000
	Interest rate at period end		2.13	%
	Maturity date		August 7, 2018
	Prior Credit Facility Repayment
	During fiscal year 2008, the Company entered into the Prior Credit Facility with its majority stockholder, Compass. At December 31, 2012, the Prior Credit Facility, as amended, provided for a $30 million revolving line of credit and Term A loan borrowings of $60.0 million at a fluctuating interest rate between 3.50% and 5.50% above either LIBOR or the Prime Rate, respectively, whichever was more favorable for the Company. The Company’s obligations under the Prior Credit Facility with Compass were collateralized by the Company’s right, title and interest in the Company’s net assets except for certain excluded intangible assets as defined in the collateral agreement with Compass.

	In August 2013, in connection with its IPO and entering into the 2013 Credit Facility, the Company repaid all indebtedness due under the Prior Credit Facility and the Prior Credit Facility was terminated. In connection with terminating the Prior Credit Facility, the Company recognized in the third quarter of 2013 a non-cash expense of approximately $1.4 million related to unamortized loan origination costs.
	Amounts outstanding under the Prior Credit Facility consisted of the following (in thousands):


		As of September 30,			As of December 31,
		2013			2012
	Line of credit	$	—		$	750


	Term A Loan	$	—		$	58,500
	Less current portion		—			(3,000	)

	Long-term debt less current portion	$	—		$	55,500

	The Prior Credit Facility contained financial covenants, with which the Company was in compliance as of agreement termination in August 2013 and at December 31, 2012. The line of credit carried an interest rate of 6.75% as of December 31, 2012. The balance under the line of credit at December 31, 2012 was classified as a long term liability as the maturity date was June 18, 2018.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2013
Commitments and Contingencies	'
	9. Commitments and Contingencies
	Operating Leases—The Company has operating lease agreements for office, research and development, and sales and marketing space 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 $0.7 million and $0.7 million for the three months ended September 30, 2013 and 2012, respectively and $2.0 million and $2.0 million for the nine months ended September 30, 2013 and 2012, respectively. See Note 7, for additional information on related party operating leases.
	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 from 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 condensed consolidated balance sheet, condensed consolidated statement of income, condensed consolidated statement of comprehensive income, or condensed consolidated statement of cash flows.

StockBased_Compensation

Stock-Based Compensation	9 Months Ended
Stock-Based Compensation	Sep. 30, 2013
Stock-Based Compensation	'
	10. Stock-Based Compensation
	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”). All outstanding stock awards under the 2008 Plan and 2008 Non Statutory Plan will continue to be governed by their existing terms. 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 (“ISOs”), non-statutory stock options (“NSOs”), stock appreciation rights, restricted stock awards (“RSAs”), restricted stock units (“RSUs”), performance units and/or performance shares.
	The equity incentive plans are administered by the board of directors (“Board”) of the Company or, if established by the Board, the Compensation Committee of the Board, which has the authority to determine the type of incentive award, as well as the terms and conditions of the awards, including (i) the number of shares of common stock subject to the award; (ii) when the award becomes exercisable; (iii) the award’s exercise price (if applicable); and (iv) the duration of the award. Awards have various vesting schedules. 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.

	Restricted Stock Units—The Company began granting RSUs to its employees and directors in August 2013. The cost of the RSUs is determined using the fair value of the Company’s common stock on the date of grant. Stock-based compensation expense is amortized on a straight-line basis over the requisite service period.
	The Company granted 504,669 RSUs during the three and nine months ended September 30, 2013. The Company recorded stock-based compensation expense related to RSUs of approximately $0.3 million and for the three and nine months ended September 30, 2013, respectively. As of September 30, 2013, the Company had approximately $8.5 million of unrecognized stock-based compensation expense related to RSUs, which will be recognized over the remaining weighted-average vesting period of approximately 3.7 years.
	Stock Option Plans— Stock option activity under the Plans was as follows:


		Number of			Weighted-			Weighted			Aggregate
		shares			average			average			intrinsic value
		outstanding			exercise			remaining			(in thousands)
					price			contractual
								life (years)
	Balance at December 31, 2012		2,501,885		$	4.88			9		$	6,828
	Options granted (weighted average fair value of $2.59 per share)		9,290			7.59

	Balance at September 30, 2013		2,511,175		$	4.88			8		$	35,841

	Options vested and expected to vest—September 30, 2013		2,511,175		$	4.88			8		$	35,841

	Options exercisable—September 30, 2013		1,401,299		$	4.38			8		$	20,867
	Aggregate intrinsic value represents the difference between the closing price of the Company’s common stock on the Nasdaq Stock Exchange and the exercise price of outstanding, in-the-money options. The total intrinsic value of options exercised was approximately $11.3 million for the nine months ended September 30, 2012.
	Valuation Assumptions—The fair value of options on the date of grant is estimated using the Black-Scholes option-pricing model using the single-option award approach with the weighted average assumptions set forth below. The Company estimates the expected term of options granted by taking the average of the vesting term and the contractual term of the option. Estimated volatilities are based on an analysis of comparable companies and the Company’s leverage. The Company bases 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 2012, 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 options granted to employees and to members of the board of directors were as follows:


		For the three months			For the nine months
		ended September 30,			ended September 30,
		2013		2012	2013			2012
	Expected term (years)	—		—		5.5			5.5-6.5
	Volatility	—		—		36	%		35-36	%
	Risk-free interest rate	—		—		0.79	%		0.61-1.36	%
	Dividend yield	—		—		—			—
	Stock-Based Compensation—Stock based compensation expense consists of expenses for stock options and RSUs. The following table summarizes the allocation of stock-based compensation in the accompanying consolidated statements of income (in thousands):


		For the three months						For the nine months
		ended September 30,						ended September 30,
		2013			2012			2013			2012
	Cost of sales	$	8		$	—		$	16		$	—
	Sales and marketing		38			44			114			115
	Research and development		12			6			41			20
	General and administrative		489			331			1,504			1,598

	Total	$	547		$	381		$	1,675		$	1,733

Earnings_Per_Share

Earnings Per Share	9 Months Ended
Earnings Per Share	Sep. 30, 2013
Earnings Per Share	'
	11. Earnings Per Share
	Earnings Per Share—Basic earnings per share is computed by dividing net income for the period by the weighted average number of common shares outstanding during the period. Diluted earnings per share is 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 RSUs, 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 (in thousands except earnings per share):


		For the three months				For the nine months
		ended September 30,				ended September 30,
		2013		2012		2013		2012
	Net income	$	9,924	$	5,469	$	19,195	$	12,425

	Weighted average shares used to compute basic earnings per share		35,013		33,465		33,983		31,588
	Dilutive effect of employee stock plans		1,410		253		1,125		318

	Weighted average shares used to compute diluted earnings per share		36,423		33,718		35,108		31,906

	Earnings per share:
	Basic	$	0.28	$	0.16	$	0.56	$	0.39
	Diluted	$	0.27	$	0.16	$	0.55	$	0.39
	The Company did not exclude any potentially dilutive shares from the calculation of diluted earnings per share for the three months ended September 30, 2013 or the nine months ended September 30, 2013 and 2012, as none of these shares would have been antidilutive. The Company excluded 99,000 options from the calculation for the three months ended September 30, 2012, as they were antidilutive.

Income_Taxes

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2013
Income Taxes	'
	12. Income Taxes
	The provision for income taxes for the three months ended September 30, 2013 and 2012 was $2.9 million and $4.1 million, respectively. Effective tax rates were 22.4% and 42.8% for the three months ended September 30, 2013 and 2012, respectively. The provision for income taxes for the nine months ended September 30, 2013 and 2012 was $7.8 million and $7.1 million, respectively. Effective tax rates were 29.0% and 36.5% for the nine months ended September 30, 2013 and 2012, respectively. The decrease in the effective tax rates for the three and nine months ended September 30, 2013 were primarily caused by a benefit in the three months ended September 30, 2013, from the expiration of the statute of limitations that allowed the Company to release a liability for unrecognized tax benefits relating to the uncertainty of amortization and depreciation expenses which were incurred from Compass’ acquisition of the Company in 2008.

Segments

Segments	9 Months Ended
Segments	Sep. 30, 2013
Segments	'
	13. Segments
	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 (in thousands):


		For the three months				For the nine months
		ended September 30,				ended September 30,
		2013		2012		2013		2012
	United States	$	27,005	$	22,498	$	72,358	$	64,263
	International		55,288		50,366		135,129		114,993

	Total Sales	$	82,293	$	72,864	$	207,487	$	179,256


	The Company’s long-lived assets by geographic location are as follows:


		September 30,		December 31,
		2013		2012
	United States	$	11,761	$	11,429
	International		779		360

	Total long-lived assets	$	12,540	$	11,789

Subsequent_Events

Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2013
Subsequent Events	'
	14. Subsequent Events
	Acquisition
	On October 31, 2013, the Company completed the acquisition of certain assets of its third-party Germany-based distributor and service center. Under the terms of the acquisition agreement, the Company will pay the seller approximately $2.3 million in cash and assume certain liabilities. The Company is in the process of completing the purchase price allocation for the acquisition. A preliminary purchase price allocation is currently expected to be included in the Company’s consolidated financial statements for the year ending December 31, 2013.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2013

Use of Estimates

Certain Significant Risks and Uncertainties

Concentration of Credit Risk

As of September 30,

As of December 31,

2013

2012

Customer A

18%

13%

Customer B

11%

12%

Customer C

12%

11%

The following customers accounted for 10% or more of total sales:

For the three months

For the nine months

ended September 30,

2013

2012

2013

2012

Customer A

17%

11%

18%

13%

Customer B

11%

Represents less than 10%

Warranties

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2013

Accounts Receivable

Concentration of Risk

The following customers accounted for 10% or more of the Company’s accounts receivable balance:

As of September 30,

As of December 31,

2013

2012

Customer A

18%

13%

Customer B

11%

12%

Customer C

12%

11%

Total Sales

Concentration of Risk

The following customers accounted for 10% or more of total sales:

For the three months

For the nine months

ended September 30,

2013

2012

2013

2012

Customer A

17%

11%

18%

13%

Customer B

11%

Represents less than 10%

Inventory_Tables

Inventory (Tables)	9 Months Ended
Inventory (Tables)	Sep. 30, 2013
Inventory	'
	Inventory consisted of the following (in thousands):


		As of September 30,		As of December 31,
		2013		2012
	Raw materials	$	33,177	$	25,822
	Work-in-process		2,058		1,460
	Finished goods		11,158		6,973

	Total inventory	$	46,393	$	34,255

Property_and_Equipment_net_Tab

Property and Equipment, net (Tables)	9 Months Ended
Property and Equipment, net (Tables)	Sep. 30, 2013
Property and Equipment	'
	Property and equipment consisted of the following (in thousands):


		As of September 30,			As of December 31,
		2013			2012
	Machinery and manufacturing equipment	$	12,677		$	11,099
	Office equipment and furniture		4,048			4,095
	Transportation equipment		1,472			1,315
	Leasehold improvements		5,287			4,729

	Total		23,484			21,238
	Accumulated depreciation and amortization		(10,944	)		(9,449	)

	Net property and equipment	$	12,540		$	11,789

Intangible_Assets_net_Tables

Intangible Assets, net (Tables)	9 Months Ended
Intangible Assets, net (Tables)	Sep. 30, 2013
Intangible Assets Excluding Goodwill	'
	Intangible assets, excluding goodwill, are comprised of the following (dollars in thousands):


		Gross		Accumulated			Net		Weighted
		carrying		amortization			carrying		average life
		amount					amount		(years)
	September 30, 2013:
	Customer relationships OEM	$	7,400	$	(3,546	)	$	3,854		11
	Customer relationships AM		4,300		(3,091	)		1,209		7
	Core technology		32,500		(23,359	)		9,141		7
	Patents		835		(209	)		626		5

	Total		45,035		(30,205	)		14,830
	Trademarks, not subject to amortization							13,300

	Total						$	28,130

	December 31, 2012:
	Customer relationships OEM	$	7,400	$	(3,083	)	$	4,317		11
	Customer relationships AM		4,300		(2,688	)		1,612		7
	Core technology		32,500		(20,313	)		12,187		7
	Patents		835		(98	)		737		5

	Total		45,035		(26,182	)		18,853
	Trademarks, not subject to amortization							13,300

	Total						$	32,153

Accrued_Expenses_Tables

Accrued Expenses (Tables)	9 Months Ended
Accrued Expenses (Tables)	Sep. 30, 2013
Accrued Expenses	'
	Accrued expenses consisted of the following (in thousands):


			As of September 30,			As of December 31,
			2013			2012
	Payroll and related expenses		$	5,866		$	5,256
	Warranty			4,172			4,582
	Related party—Compass(1)			—			292
	Income tax payable			1,999			9
	Other accrued expenses			15			17

	Total		$	12,052		$	10,156


	-1	Amount relates to interest and management fees payable to Compass.
Activity Related to Warranties	'
	Activity related to warranties is as follows (in thousands):


			For the three months						For the nine months
			ended September 30,						ended September 30,
			2013			2012			2013			2012
	Beginning warranty liability		$	3,995		$	2,857		$	4,582		$	2,799
	Charge to cost of sales			1,432			1,948			3,119			3,377
	Costs incurred			(1,255	)		(872	)		(3,529	)		(2,243	)

	Ending warranty liability		$	4,172		$	3,933		$	4,172		$	3,933

Debt_Tables

Debt (Tables)	9 Months Ended
Debt (Tables)	Sep. 30, 2013
Summary of 2013 Credit Facility	'
	The following table summarizes the 2013 Credit Facility (dollars in thousands):


		As of September 30,
		2013
	Amount outstanding	$	24,500
	Available borrowing capacity	$	35,500
	Maximum borrowing capacity	$	60,000
	Interest rate at period end		2.13	%
	Maturity date		August 7, 2018
Amounts Outstanding Under the Prior Credit Facility	'
	Amounts outstanding under the Prior Credit Facility consisted of the following (in thousands):


		As of September 30,			As of December 31,
		2013			2012
	Line of credit	$	—		$	750


	Term A Loan	$	—		$	58,500
	Less current portion		—			(3,000	)

	Long-term debt less current portion	$	—		$	55,500

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	9 Months Ended
Stock-Based Compensation (Tables)	Sep. 30, 2013
Stock Option Activity Under Plans	'
	Stock option activity under the Plans was as follows:


		Number of			Weighted-			Weighted			Aggregate
		shares			average			average			intrinsic value
		outstanding			exercise			remaining			(in thousands)
					price			contractual
								life (years)
	Balance at December 31, 2012		2,501,885		$	4.88			9		$	6,828
	Options granted (weighted average fair value of $2.59 per share)		9,290			7.59

	Balance at September 30, 2013		2,511,175		$	4.88			8		$	35,841

	Options vested and expected to vest—September 30, 2013		2,511,175		$	4.88			8		$	35,841

	Options exercisable—September 30, 2013		1,401,299		$	4.38			8		$	20,867
Assumptions Used to Value Stock-Based Awards Granted to Employees and Members of Board of Directors	'
	The assumptions used to value stock options granted to employees and to members of the board of directors were as follows:


		For the three months			For the nine months
		ended September 30,			ended September 30,
		2013		2012	2013			2012
	Expected term (years)	—		—		5.5			5.5-6.5
	Volatility	—		—		36	%		35-36	%
	Risk-free interest rate	—		—		0.79	%		0.61-1.36	%
	Dividend yield	—		—		—			—
Summary of Allocation of Stock-Based Compensation in Accompanying Consolidated Statements of Income	'
	The following table summarizes the allocation of stock-based compensation in the accompanying consolidated statements of income (in thousands):


		For the three months						For the nine months
		ended September 30,						ended September 30,
		2013			2012			2013			2012
	Cost of sales	$	8		$	—		$	16		$	—
	Sales and marketing		38			44			114			115
	Research and development		12			6			41			20
	General and administrative		489			331			1,504			1,598

	Total	$	547		$	381		$	1,675		$	1,733

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
Earnings Per Share (Tables)	Sep. 30, 2013
Calculation of Basic and Diluted Earnings Per Share	'
	The following table presents the calculation of basic and diluted earnings per share (in thousands except earnings per share):


		For the three months				For the nine months
		ended September 30,				ended September 30,
		2013		2012		2013		2012
	Net income	$	9,924	$	5,469	$	19,195	$	12,425

	Weighted average shares used to compute basic earnings per share		35,013		33,465		33,983		31,588
	Dilutive effect of employee stock plans		1,410		253		1,125		318

	Weighted average shares used to compute diluted earnings per share		36,423		33,718		35,108		31,906

	Earnings per share:
	Basic	$	0.28	$	0.16	$	0.56	$	0.39
	Diluted	$	0.27	$	0.16	$	0.55	$	0.39

Segments_Tables

Segments (Tables)	9 Months Ended
Segments (Tables)	Sep. 30, 2013
Summary of Total Sales by Geographic Location of Customer	'
	The following table summarizes total sales generated by geographic location of the customer (in thousands):


		For the three months				For the nine months
		ended September 30,				ended September 30,
		2013		2012		2013		2012
	United States	$	27,005	$	22,498	$	72,358	$	64,263
	International		55,288		50,366		135,129		114,993

	Total Sales	$	82,293	$	72,864	$	207,487	$	179,256

Long-lived Assets by Geographic Location	'
	The Company’s long-lived assets by geographic location are as follows:


		September 30,		December 31,
		2013		2012
	United States	$	11,761	$	11,429
	International		779		360

	Total long-lived assets	$	12,540	$	11,789

Description_of_Business_and_Ba1

Description of Business and Basis of Presentation - Additional Information (Detail) (Initial public offering (IPO), USD $)	1 Months Ended
In Millions, except Share data, unless otherwise specified	Aug. 13, 2013
Description of Business and Basis of Presentation [Line Items]	'
Initial public offering (IPO), number of common shares issued	2,857,143
Initial public offering (IPO), price per share	$15
Proceeds from initial public offering (IPO)	$36.10
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

Customers_Accounted_for_10_or_

Customers Accounted for 10% or More of Accounts Receivable Balance (Detail)	Sep. 30, 2013	Dec. 31, 2012
Customer A	'	'
Concentration Risk [Line Items]	'	'
Concentration risk with accounts receivable, percentage	18.00%	13.00%
Customer B	'	'
Concentration Risk [Line Items]	'	'
Concentration risk with accounts receivable, percentage	11.00%	12.00%
Customer C	'	'
Concentration Risk [Line Items]	'	'
Concentration risk with accounts receivable, percentage	12.00%	11.00%

Customers_Accounted_for_10_or_1

Customers Accounted for 10% or More of Total Sales (Detail) (Total Sales)	3 Months Ended			9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Customer A	'		'	'		'
Concentration Risk [Line Items]	'		'	'		'
Concentration risk percentage	17.00%		11.00%	18.00%		13.00%
Customer B	'		'	'		'
Concentration Risk [Line Items]	'		'	'		'
Concentration risk percentage	'	[1]	11.00%	'	[1]	'	[1]

[1]	Represents less than 10%

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Detail)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2013
	Supplier Concentration Risk	Supplier Concentration Risk	Supplier Concentration Risk	Supplier Concentration Risk	Supplier Concentration Risk	Supplier Concentration Risk	Minimum	Maximum
	Vendor	Vendor	Purchases	Purchases	Purchases	Purchases
Summary of Significant Accounting Policies [Line Items]	'	'	'	'	'	'	'	'
Concentration risk percentage	'	'	54.00%	57.00%	53.00%	56.00%	'	'
Number of vendors that account for significant purchases	10	10	'	'	'	'	'	'
Concentration risk with accounts payable, percentage	45.00%	43.00%	'	'	'	'	'	'
Product warranty period	'	'	'	'	'	'	'1 year	'2 years

Inventory_Detail

Inventory (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Inventory [Line Items]	'	'
Raw materials	$33,177	$25,822
Work-in-process	2,058	1,460
Finished goods	11,158	6,973
Total inventory	$46,393	$34,255

Property_and_Equipment_Detail

Property and Equipment (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]	'	'
Machinery and manufacturing equipment	$12,677	$11,099
Office equipment and furniture	4,048	4,095
Transportation equipment	1,472	1,315
Leasehold improvements	5,287	4,729
Total	23,484	21,238
Accumulated depreciation and amortization	-10,944	-9,449
Net property and equipment	$12,540	$11,789

Property_and_Equipment_Net_Add

Property and Equipment, Net - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Property, Plant and Equipment [Line Items]	'	'	'	'
Depreciation and amortization expense	$0.60	$0.50	$1.70	$1.30

Intangible_Assets_Excluding_Go

Intangible Assets Excluding Goodwill (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Intangible Asset Excluding Goodwill [Line Items]	'	'
Gross carrying amount	$45,035	$45,035
Accumulated amortization	-30,205	-26,182
Net carrying amount	14,830	18,853
Intangible assets, excluding goodwill	28,130	32,153
Trademarks	'	'
Intangible Asset Excluding Goodwill [Line Items]	'	'
Intangible assets, not subject to amortization	13,300	13,300
Customer relationships \| OEM	'	'
Intangible Asset Excluding Goodwill [Line Items]	'	'
Gross carrying amount	7,400	7,400
Accumulated amortization	-3,546	-3,083
Net carrying amount	3,854	4,317
Weighted average life (years)	'11 years	'11 years
Customer relationships \| AM	'	'
Intangible Asset Excluding Goodwill [Line Items]	'	'
Gross carrying amount	4,300	4,300
Accumulated amortization	-3,091	-2,688
Net carrying amount	1,209	1,612
Weighted average life (years)	'7 years	'7 years
Core technology	'	'
Intangible Asset Excluding Goodwill [Line Items]	'	'
Gross carrying amount	32,500	32,500
Accumulated amortization	-23,359	-20,313
Net carrying amount	9,141	12,187
Weighted average life (years)	'7 years	'7 years
Patents	'	'
Intangible Asset Excluding Goodwill [Line Items]	'	'
Gross carrying amount	835	835
Accumulated amortization	-209	-98
Net carrying amount	$626	$737
Weighted average life (years)	'5 years	'5 years

Intangible_Assets_Net_Addition

Intangible Assets, Net - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Intangible Assets [Line Items]	'	'	'	'
Amortization of intangibles	$1,341	$1,341	$4,023	$3,974

Accrued_Expenses_Detail

Accrued Expenses (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Accrued Expenses [Line Items]	'	'
Payroll and related expenses	$5,866	$5,256
Warranty	4,172	4,582
Related party-Compass	'	292	[1]
Income tax payable	1,999	9
Other accrued expenses	15	17
Total	$12,052	$10,156

[1]	Amount relates to interest and management fees payable to Compass.

Activity_Related_to_Warranties

Activity Related to Warranties (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Standard Product Warranty Accrual [Line Items]	'	'	'	'
Beginning warranty liability	$3,995	$2,857	$4,582	$2,799
Charge to cost of sales	1,432	1,948	3,119	3,377
Costs incurred	-1,255	-872	-3,529	-2,243
Ending warranty liability	$4,172	$3,933	$4,172	$3,933

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Related Party Transaction [Line Items]	'	'	'	'	'
Related party, interest expense on prior credit facility	$0.50	$1.30	$2.20	$1.80	'
Operating Leases, leases expense	0.7	0.7	2	2	'
Related Party Transactions	'	'	'	'	'
Related Party Transaction [Line Items]	'	'	'	'	'
Related party, amount outstanding under prior credit facility	0	'	0	'	59.3
Related party, management fees	0.1	0.1	0.3	0.4	'
Related party, term of lease end date	'	'	30-Jun-18	'	'
Operating Leases, leases expense	$0.30	$0.30	$0.90	$0.80	'

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)

9 Months Ended

12 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

2013 Credit Facility

Prior Credit Facility

London Interbank Offered Rate (LIBOR)

Prime Rate

Minimum

Maximum

Revolving Line of Credit

Term A loan

Minimum

Maximum

Minimum

Maximum

Debt Instrument [Line Items]

Credit facility, initial amount borrowed

$28,500,000

Payments on related party line of credit

32,608,000

16,335,000

21,600,000

Basis spread on variable rate

1.50%

2.50%

0.50%

1.50%

3.50%

5.50%

Credit facility, maximum borrowing capacity

60,000,000

30,000,000

Debt maximum amount outstanding

60,000,000

Non-cash expense related to unamortized loan origination costs

$1,405,000

Line of credit carried an interest rate

6.75%

Long term liability as the maturity date

18-Jun-18

Summary_of_2013_Credit_Facilit

Summary of 2013 Credit Facility (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013
Line of Credit Facility [Line Items]	'
Amount outstanding	$24,500
Available borrowing capacity	35,500
Maximum borrowing capacity	$60,000
Interest rate at period end	2.13%
Maturity date	7-Aug-18

Amounts_Outstanding_Under_the_

Amounts Outstanding Under the Prior Credit Facility (Detail) (USD $)	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2012
Debt Instrument [Line Items]	'
Line of credit-related party	$750
Term A Loan	58,500
Less current portion	-3,000
Long-term debt less current portion	$55,500

Commitment_and_Contingencies_A

Commitment and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Commitments and Contingencies [Line Items]	'	'	'	'
Operating Leases, leases expense	$0.70	$0.70	$2	$2

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Stock-based compensation expense	$547,000	$381,000	$1,675,000	$1,733,000
Stock Option Plan, total intrinsic value of options exercised	'	'	'	11,300,000
Employee stock-based compensation, fair value assumption expected dividends	'	'	0	'
Stock Option \| Minimum	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Vesting period	'	'	'1 year	'
Stock Option \| Maximum	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Vesting period	'	'	'5 years	'
Expiration period of options granted	'	'	'10 years	'
Restricted Stock Units (RSUs)	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Vesting period	'	'	'4 years	'
Vesting percent at the end of one year	'	'	25.00%	'
Restricted stock units granted	504,669	'	504,669	'
Stock-based compensation expense	300,000	'	300,000	'
Unrecognized stock-based compensation expense	$8,500,000	'	$8,500,000	'
Recognized over the remaining weighted-average vesting period	'	'	'3 years 8 months 12 days	'

Stock_Option_Activity_Under_Pl

Stock Option Activity Under Plan (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Number of shares outstanding	'	'
Options outstanding, beginning balance	2,501,885	'
Options granted	9,290	'
Options outstanding, ending balance	2,511,175	2,501,885
Options vested and expected to vest	2,511,175	'
Options exercisable	1,401,299	'
Weighted-average exercise price	'	'
Weighted-average exercise price, beginning of period	$4.88	'
Options granted	$7.59	'
Weighted-average exercise price, ending balance	$4.88	$4.88
Options vested and expected to vest	$4.88	'
Options exercisable	$4.38	'
Weighted average remaining contractual life	'	'
Options outstanding	'8 years	'9 years
Options vested and expected to vest	'8 years	'
Options exercisable	'8 years	'
Aggregate intrinsic value	'	'
Options outstanding	$35,841	$6,828
Options vested and expected to vest	35,841	'
Options exercisable	$20,867	'

Stock_Option_Activity_Under_Pl1

Stock Option Activity Under Plan (Parenthetical) (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Options granted, weighted average fair value	$2.59

Assumptions_Used_to_Value_Stoc

Assumptions Used to Value Stock-Based Awards Granted to Employees and Members of Board of Directors (Detail)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Expected term (years)	'5 years 6 months	'
Volatility	36.00%	'
Volatility, Minimum	'	35.00%
Volatility, Maximum	'	36.00%
Risk-free interest rate	0.79%	'
Risk-free interest rate, Minimum	'	0.61%
Risk-free interest rate, Maximum	'	1.36%
Dividend yield	0.00%	0.00%
Minimum	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Expected term (years)	'	'5 years 6 months
Maximum	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Expected term (years)	'	'6 years 6 months

Summary_of_Allocation_of_Stock

Summary of Allocation of Stock-Based Compensation in Accompanying Consolidated Statements of Income (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	$547	$381	$1,675	$1,733
Cost of sales	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	8	'	16	'
Sales and marketing	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	38	44	114	115
Research and development	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	12	6	41	20
General and administrative	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Stock-based compensation	$489	$331	$1,504	$1,598

Calculation_of_Basic_and_Dilut

Calculation of Basic and Diluted Earnings Per Share (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Schedule Of Earnings Per Share Basic And Diluted [Line Items]	'	'	'	'
Net income	$9,924	$5,469	$19,195	$12,425
Weighted average shares used to compute basic earnings per share	35,013	33,465	33,983	31,588
Dilutive effect of employee stock plans	1,410	253	1,125	318
Weighted average shares used to compute diluted earnings per share	36,423	33,718	35,108	31,906
Basic	$0.28	$0.16	$0.56	$0.39
Diluted	$0.27	$0.16	$0.55	$0.39

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail)	3 Months Ended		9 Months Ended
Earnings Per Share - Additional Information (Detail)	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Anti-dilutive shares excluded from calculation of diluted earnings per share	0	99,000	0	0

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Tax Disclosure [Line Items]	'	'	'	'
Provision for income taxes	$2,872	$4,099	$7,834	$7,131
Effective tax rates	22.40%	42.80%	29.00%	36.50%

Summary_of_Total_Sales_by_Geog

Summary of Total Sales by Geographic Location of Customer (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]	'	'	'	'
Sales	$82,293	$72,864	$207,487	$179,256
United States	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Sales	27,005	22,498	72,358	64,263
International	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'
Sales	$55,288	$50,366	$135,129	$114,993

Longlived_Assets_by_Geographic

Long-lived Assets by Geographic Location (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]	'	'
Long-lived assets	$12,540	$11,789
United States	'	'
Segment Reporting Information [Line Items]	'	'
Long-lived assets	11,761	11,429
International	'	'
Segment Reporting Information [Line Items]	'	'
Long-lived assets	$779	$360

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (Subsequent Event, Acquisition, USD $)	1 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013
Subsequent Event \| Acquisition	'
Subsequent Event [Line Items]	'
Business acquired in cash	$2.30