Power Solutions International (PSIX) 10-K 28 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 24, 2014	Jun. 28, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Trading Symbol	'PSIX	'	'
Entity Registrant Name	'POWER SOLUTIONS INTERNATIONAL, INC.	'	'
Entity Central Index Key	'0001137091	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	10,562,139	'
Entity Public Float	'	'	$75,719,955

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets	'	'
Cash	$6,306	$543
Accounts receivable, net	42,730	37,480
Inventories, net	55,986	39,968
Prepaid expenses and other current assets	2,173	1,910
Deferred income taxes	2,811	2,176
Total current assets	110,006	82,077
Property, plant & equipment, net	13,104	7,145
Other noncurrent assets	3,509	1,543
TOTAL ASSETS	126,619	90,765
Current liabilities	'	'
Accounts payable	24,444	26,579
Income taxes payable	167	1,074
Accrued compensation and benefits	3,758	2,396
Accrued liabilities	4,016	2,615
Total current liabilities	32,385	32,664
LONG-TERM OBLIGATIONS	'	'
Revolving line of credit	17,933	30,942
Deferred income taxes	304	136
Private placement warrants	24,525	3,666
Other noncurrent liabilities	1,051	623
TOTAL LIABILITIES	76,198	68,031
COMMITMENTS AND CONTINGENCIES	'	'
STOCKHOLDERS' EQUITY	'	'
Series A convertible preferred stock - $0.001 par value. Authorized: 114,000 shares. Issued and outstanding: -0- shares at December 31, 2013 and 2012.	'	'
Common stock - $0.001 par value. Authorized: 50,000,000 shares. Issued: 11,352,812 and 9,909,212 shares at December 31, 2013 and 2012, respectively. Outstanding: 10,521,887 and 9,078,287 shares at December 31, 2013 and 2012, respectively.	11	10
Additional paid-in-capital	57,308	10,862
(Accumulated deficit) retained earnings	-2,648	16,112
Treasury stock, at cost, 830,925 shares at December 31, 2013 and 2012.	-4,250	-4,250
TOTAL STOCKHOLDERS' EQUITY	50,421	22,734
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$126,619	$90,765

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Apr. 29, 2011
Statement Of Financial Position [Abstract]	'	'	'
Series A convertible preferred stock, par value	$0.00	$0.00	'
Series A convertible preferred stock, shares authorized	114,000	114,000	'
Series A Convertible Preferred Stock, shares issued	0	0	'
Series A convertible preferred stock, shares outstanding	0	0	'
Common stock, par value	$0.00	$0.00	'
Common stock, shares authorized	50,000,000	50,000,000	'
Common stock, shares issued	11,352,812	9,909,212	'
Common stock, shares outstanding	10,521,887	9,078,287	10,000,000
Treasury stock, at cost	830,925,000	830,925,000	'

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net sales	$237,842	$202,342	$154,969
Cost of sales	193,316	168,425	128,541
Gross profit	44,526	33,917	26,428
Operating expenses:	'	'	'
Research & development and engineering	10,439	7,377	4,713
Selling and service	7,545	5,925	6,666
General and administrative	11,575	8,299	5,244
Total operating expense	29,559	21,601	16,623
Operating income	14,967	12,316	9,805
Other expense:	'	'	'
Interest expense	657	1,023	1,340
Loss on debt extinguishment	270	'	485
Private placement warrant expense	28,031	448	382
Other expense, net	10	'	764
Total other expense	28,968	1,471	2,971
(Loss) income before income taxes	-14,001	10,845	6,834
Income tax provision	4,759	4,143	2,773
Net (loss) income	-18,760	6,702	4,061
Undistributed (loss) earnings	-18,760	6,702	4,061
Common Shares [Member]	'	'	'
Other expense:	'	'	'
Undistributed (loss) earnings allocable to shares	-18,760	6,702	1,548
Weighted-average preferred shares outstanding:	'	'	'
Basic	9,779,457	9,068,846	3,512,534
Diluted	9,779,457	9,068,846	3,512,534
Weighted-average common shares outstanding:	'	'	'
Basic	9,779,457	9,068,846	3,512,534
Diluted	9,779,457	9,068,846	3,512,534
Undistributed (loss) earnings per share - basic	'	'	'
Undistributed (loss) earnings per share - basic	($1.92)	$0.74	$0.44
Undistributed (loss) earnings per share - diluted	'	'	'
Undistributed (loss) earnings per share - diluted	($1.92)	$0.74	$0.44
Preferred Shares [Member]	'	'	'
Weighted-average preferred shares outstanding:	'	'	'
Basic	'	'	'
Diluted	'	'	'
Weighted-average common shares outstanding:	'	'	'
Basic	'	'	'
Diluted	'	'	'
Series A Convertible Preferred Shares [Member]	'	'	'
Other expense:	'	'	'
Undistributed (loss) earnings allocable to shares	'	'	$2,513
Undistributed (loss) earnings per share - basic	'	'	'
Undistributed (loss) earnings per share - basic	'	'	'
Undistributed (loss) earnings per share - diluted	'	'	'
Undistributed (loss) earnings per share - diluted	'	'	'

CONSOLIDATED_STATEMENTS_OF_CHA

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)	Total	Preferred Shares [Member]	Common Stock [Member]	Common Stock Warrant [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	(Accumulated deficit) retained earnings [Member]
In Thousands
Balance at Dec. 31, 2010 (Originally Stated [Member])	$5,356	'	$10	'	($3)	'	$5,349
Balance (Restatement Adjustment [Member])	5,356	'	'	'	7	'	5,349
1 for 32 reverse split	'	'	-10	'	10	'	'
Net (loss) income	4,061	'	'	'	'	'	4,061
Reverse recapitalization	-380	-389	'	'	9	'	'
Net proceeds from private placement	10,537	10,138	'	399	'	'	'
Conversion of preferred stock	'	-9,749	10	'	9,739	'	'
Exercise of private placement warrants	'	'	'	-399	399	'	'
Repurchase of common stock	-4,250	'	'	'	'	-4,250	'
Balance at Dec. 31, 2011	15,324	'	10	'	10,154	-4,250	9,410
Net (loss) income	6,702	'	'	'	'	'	6,702
Share-based compensation expense	478	'	'	'	478	'	'
Exercise of private placement warrants	230	'	'	'	230	'	'
Balance at Dec. 31, 2012	22,734	'	10	'	10,862	-4,250	16,112
Net (loss) income	-18,760	'	'	'	'	'	-18,760
Net proceeds from stock offering	34,016	'	1	'	34,015	'	'
Share-based compensation expense	1,268	'	'	'	1,268	'	'
Payment of withholding taxes for net settlement of share-based awards	-2,063	'	'	'	-2,063	'	'
Excess tax benefit from exercise of share-based awards	1,642	'	'	'	1,642	'	'
Exercise of private placement warrants	11,584	'	'	'	11,584	'	'
Balance at Dec. 31, 2013	$50,421	'	$11	'	$57,308	($4,250)	($2,648)

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities	'	'	'
Net (loss) income	($18,760,000)	$6,702,000	$4,061,000
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:	'	'	'
Depreciation and amortization	1,568,000	1,105,000	820,000
Deferred income taxes	-467,000	-716,000	-870,000
Share-based compensation expense	1,268,000	478,000	'
Increase (decrease) in accounts receivable allowances	10,000	'	-249,000
Increase in valuation of private placement warrants liability	28,031,000	448,000	382,000
Loss on investment in joint venture	39,000	'	'
Loss on disposal of assets	72,000	111,000	6,000
Loss on debt extinguishment	270,000	'	485,000
(Increase) decrease in operating assets:	'	'	'
Accounts receivable	-5,260,000	-7,957,000	-12,992,000
Inventories	-16,018,000	-6,575,000	-1,225,000
Prepaid expenses and other assets	-1,785,000	-535,000	-237,000
Increase (decrease) in operating liabilities:	'	'	'
Accounts payable	-3,687,000	2,473,000	7,365,000
Accrued liabilities	2,763,000	924,000	1,609,000
Income taxes payable	-445,000	510,000	-55,000
Other noncurrent liabilities	-34,000	91,000	-73,000
Net cash used in operating activities	-12,435,000	-2,941,000	-973,000
Cash flows from investing activities	'	'	'
Purchases of property, plant, equipment and other assets	-6,007,000	-3,890,000	-1,557,000
Investment in joint venture	-500,000	'	'
Increase in cash surrender value of life insurance	-7,000	-8,000	-13,000
Net cash used in investing activities	-6,514,000	-3,898,000	-1,570,000
Cash flows from financing activities	'	'	'
(Decrease) increase in cash overdraft	'	-3,780,000	3,251,000
Proceeds from stock offering	36,750,000	'	'
Proceeds from issuance of preferred stock with warrants	'	'	18,000,000
Initial proceeds/advances from borrowings under revolving line of credit	38,995,000	'	18,338,000
Repayments of prior revolving line of credit	-38,945,000	'	-21,633,000
Proceeds from exercise of private placement warrants	4,412,000	178,000	'
Proceeds from long-term debt	'	'	43,000
Payments on long-term debt and capital lease obligations	'	-64,000	-7,880,000
Repurchase of common stock	'	'	-4,250,000
Payment of withholding taxes from net settlement of share-based awards	-2,063,000	'	'
Excess tax benefit from exercise of share-based awards	1,642,000	'	'
Cash paid for financing and transaction fees	-3,020,000	-228,000	-4,654,000
Net cash provided by financing activities	24,712,000	7,382,000	2,543,000
Increase in cash	5,763,000	543,000	'
Cash at beginning of the year	543,000	'	'
Cash at end of the year	6,306,000	543,000	'
Supplemental disclosures of cash flow information	'	'	'
Cash paid for interest	660,000	912,000	1,163,000
Cash paid for income taxes	4,869,000	4,353,000	3,695,000
Supplemental disclosure of non-cash transactions	'	'	'
Unpaid property, plant, equipment and other assets	1,552,000	928,000	164,000
Fair value of private placement warrants exercised	7,172,000	52,000	'
Dividends	'	'	224,000
Common stock issued due to exercise of warrant	'	'	399,000
Noncurrent obligation [Member]	'	'	'
Cash flows from financing activities	'	'	'
Initial proceeds/advances from borrowings under revolving line of credit	74,841,000	72,062,000	'
Repayments of prior revolving line of credit	-87,900,000	-65,035,000	'
Current obligation [Member]	'	'	'
Cash flows from financing activities	'	'	'
Net change in revolving line of credit - current obligation	'	$4,249,000	$1,328,000

Description_of_the_company_and

Description of the company and summary of significant accounting policies	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Description of the company and summary of significant accounting policies	'
	1. Description of the company and summary of significant accounting policies
	Description of the company
	Power Solutions International, Inc., a Delaware corporation, is the successor in a migratory merger to Power Solutions International, Inc., a Nevada corporation (“Power Solutions International” and “PSI” refer to Power Solutions International, Inc., a Nevada corporation, prior to the consummation of the migratory merger, and Power Solutions International, Inc., a Delaware corporation, following the consummation of the migratory merger). Power Solutions International, Inc., a Nevada corporation, was formerly known as Format, Inc. (“Format”), and prior to the consummation of a reverse recapitalization, was engaged, to a limited extent, in EDGARizing corporate documents for filing with the Securities and Exchange Commission (“SEC”) and in providing limited commercial printing services. On April 29, 2011, Format consummated a reverse acquisition transaction with The W Group, Inc. and its subsidiaries (“The W Group”), and in connection with this transaction, Format changed its corporate name to Power Solutions International, Inc. The W Group remained as the surviving corporation of the reverse acquisition, becoming a wholly-owned subsidiary of Power Solutions International.
	The W Group was the accounting acquirior in the reverse recapitalization with Format, Inc. Accordingly, with respect to the period prior to the reverse recapitalization, it is The W Group’s historical financial position and results of operations that are presented in the consolidated financial statements, with The W Group’s historical equity restated to reflect the originally issued and outstanding equity of Format, plus the equity issued by Power Solutions International, pursuant to the reverse recapitalization.
	Unless the context otherwise requires, the “Company” refers to The W Group prior to the closing of the reverse recapitalization on April 29, 2011, and Power Solutions International, Inc. as successor to the business of The W Group, following the completion of the reverse recapitalization.
	Refer to Note 3, “Reverse recapitalization of The W Group, private placement, reverse split and migratory merger,” for further description of these transactions.
	Nature of business operations
	The Company is a global producer and distributor of a broad range of high performance, certified low emission, power systems, including alternative fuel power systems, for original equipment manufacturers of off-highway industrial equipment (“industrial OEMs”). The Company’s customers include companies that are large, industry-leading and/or multinational organizations. The Company’s products and services are sold predominantly to customers throughout North America, as well as, to customers located throughout Asia and Europe. The Company operates as one business and geographic segment.
	The Company’s power systems are highly engineered, comprehensive systems which, through its technologically sophisticated development and manufacturing processes, including its in-house design, prototyping, testing and engineering capabilities and its analysis and determination of the specific components to be integrated into a given power system (driven in large part by emission standards and cost restrictions required, or desired, to be met), allow the Company to provide to its customers power systems customized to meet specific industrial OEM application requirements, other technical specifications of customers, and requirements imposed by environmental regulatory bodies. The Company’s power system configurations range from a basic engine integrated with appropriate fuel system components to completely packaged power systems that include any combination of cooling systems, electronic systems, air intake systems, fuel systems, housings, power takeoff systems, exhaust systems, hydraulic systems, enclosures, brackets, hoses, tubes and other assembled componentry. The Company purchases engines from third party suppliers and produces an internally-designed engine, all of which engines are then integrated into the Company’s power systems. Additionally, the Company is designing and developing other engines in-house. Of the other components that the Company integrates into its power systems, a substantial portion consist of internally designed components and components for which the Company coordinates significant design efforts with third party suppliers, with the remainder consisting largely of parts that are sourced off-the-shelf from third party suppliers. Some of the key components (including purchased engines) embody proprietary intellectual property of the Company’s suppliers. As a result of its design and manufacturing capabilities, the Company is able to provide to its customers a comprehensive power system which can be incorporated, using a single part number, directly into a customer’s specified application. Capitalizing on its expertise in developing and manufacturing emission-certified power systems and its access to the latest power system technologies, the Company believes that it is able to provide complete “green” power systems to industrial OEMs at a low cost and with fast design turnaround. In addition to the certified products described above, the Company sells diesel and non-certified power systems and aftermarket components.
	Basis of presentation
	The consolidated financial statements of Power Solutions International, Inc. present information in accordance with generally accepted accounting principles in the U.S. (“GAAP”), have been prepared pursuant to the rules and regulations of the SEC and, in the opinion of management present fairly the consolidated financial position, results of operations and cash flows of the Company and its wholly-owned subsidiaries for the periods presented, including retroactive restatement to reflect the 1-for-32 Reverse Split approved by the stockholders in their vote on the Migratory Merger and Reverse Split which were effective August 26, 2011 (and described below in Note 3, “Reverse recapitalization of The W Group, private placement, reverse split and migratory merger”), as required in accordance with SEC Staff Accounting Bulletin (SAB) Topic 4C Equity Accounts — Change in Capital Structure, and Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 260, Earnings Per Share. The consummation of the Migratory Merger and Reverse Split, effective on August 26, 2011, also triggered the automatic conversion of the shares of the Company’s preferred stock to the Company’s common stock. In accordance with ASC 260, the conversion of the Company’s preferred stock is presented prospectively from August 26, 2011, in the Company’s results as of and for the year ended December 31, 2011, resulting in a $9.7 million increase in additional paid in capital and elimination of the Series A Convertible Preferred Stock in the Company’s consolidated balance sheet as of December 31, 2011, detailed in Note 12, “Stockholders’ equity.” Earnings per share is calculated based upon the weighted average shares which reflect the conversion of the preferred shares to shares of the Company’s common stock effective August 26, 2011, as restated for the Reverse Split.
	Principles of consolidation
	The consolidated financial statements include the accounts of Power Solutions International, Inc., and its direct and indirect wholly-owned subsidiaries, The W Group, Inc., Power Production, Inc., Power Great Lakes, Inc., Power Solutions, Inc., Power Global Solutions, Inc., Auto Manufacturing, Inc., Torque Power Source Parts, Inc., XISync, LLC, PSI International, LLC, and Power Properties, L.L.C. Collectively, these entities produce and distribute off-highway industrial engines and provide aftermarket support for the industrial engine market. All significant intercompany balances and transactions have been eliminated in consolidation.
	Use of estimates
	The preparation of consolidated financial statements in conformity with GAAP requires that management make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could materially differ from those estimates.
	Revenue recognition
	The Company recognizes revenue upon transfer of title and risk of loss to the customer, which is typically when products are shipped, provided there is persuasive evidence of an arrangement, the sales price is fixed or determinable and management believes collectability is reasonably assured.
	The Company classifies shipping and handling charges billed to customers as revenue. Shipping and handling costs paid to others are classified as a component of cost of sales when incurred.
	Inventories, net
	Inventories consist primarily of engines and parts. Engines are valued at the lower of cost, plus estimated freight-in, as determined by specific serial number identification, or market value. Parts are valued at the lower of cost (first-in, first-out) or market value. When necessary, the Company writes down inventory for an estimated amount equal to the difference between the cost of the inventory and the estimated realizable value. Additionally, an inventory reserve is provided for based upon the Company’s estimation of future demand for the quantity of inventory on hand. In determining an estimate of future demand, multiple factors are taken into consideration, including (i) customer purchase orders and customer forecasted demand; (ii) historical sales/usage for each inventory item; and (iii) utilization within a current or anticipated future power system.
	Inventories consisted of the following as of December 31:
		2013			2012
	Raw materials	$	53,538		$	36,006
	Finished goods		2,448			3,962
	Total	$	55,986		$	39,968
	Accounts receivable and allowance for doubtful accounts
	Accounts receivable are due under normal trade terms generally requiring payment within 30 to 45 days from the invoice date. A limited number of customers have terms which may extend up to 150 days from the invoice date. The carrying amount of accounts receivable is reduced by a valuation allowance that reflects management’s best estimate of the amounts that will not be collected. Management specifically reviews all past due accounts receivable balances and, based on historical experience and an assessment of current creditworthiness, estimates the portion, if any, of the balance that will not be collected.
	The activity in the Company’s allowance for doubtful accounts as of December 31, was as follows:
		2013			2012
	Balance at beginning of year	$	70		$	140
	(Reduction of) charged to expense		(15	)		(72	)
	(Write-offs), net of recoveries		25			2
	Balance at end of year	$	80		$	70
	Cash overdrafts
	Prior to the March 20, 2012 amendment of the Company’s prior loan and security agreement with BMO Harris Bank, N.A. (“BMO Bank”), cash received was automatically swept and applied against the Company’s revolving line of credit. Accordingly, the Company did not maintain cash on its consolidated balance sheet, but instead funded its operations through borrowings under its revolving line of credit. Under this cash management system, cash overdraft balances existed for the Company’s primary disbursement accounts and such cash overdraft balances were classified within accounts payable on the Company’s consolidated balance sheet and changes in the cash overdraft balances were presented as financing activities on the Company’s consolidated statement of cash flows. These overdrafts represented uncleared checks in excess of cash balances in the related bank accounts. As a result of the amendment and as provided in the Company’s current loan and security agreement with Wells Fargo Bank, National Association, cash balances are no longer automatically applied against the revolving line of credit, and as a result, the Company carries cash balances on its consolidated balance sheet from time to time.
	Under ASC 470-10-45, Debt, the elimination of the automatic sweeping of the Company’s cash and application of such cash against the revolving line of credit resulted in a change in the presentation of the revolving line of credit from a current liability to a long-term obligation on the Company’s consolidated balance sheet. Accordingly, the Company presented the revolving line of credit as a long-term obligation on its consolidated balance sheet subsequent to March 20, 2012.
	Warranty costs
	The Company offers a standard limited warranty on the workmanship of its products that in most cases covers defects for a defined period. Warranties for certified emission products are mandated by the Environmental Protection Agency (“EPA”) and/or the California Air Resources Board (“CARB”) and are longer than the Company’s standard warranty on certain emission related products. The Company’s products also carry limited warranties from suppliers. Costs related to supplier warranty claims are borne by the supplier; the Company’s warranties apply only to the modifications made to supplier base products. The Company’s management estimates and records a liability, and related charge to income, for the warranty program at the time products are sold to customers. Estimates are based on historical experience and reflect management’s best estimates of expected costs at the time products are sold. The Company makes adjustments to estimates in the period in which it is determined that actual costs may differ from initial or previous estimates.
	The activity in the Company’s warranty accrual as of December 31 was as follows:
		2013			2012
	Balance at beginning of year	$	690		$	803
	Charged to expense		1,195			148
	Payments		(611	)		(261	)
	Balance at end of year	$	1,274		$	690
	Private placement warrants
	The Company’s private placement warrants are accounted for as a liability, in accordance with ASC 480-10-25-14, Distinguishing Liabilities from Equity. ASC 480-10-25-14 states that, if an entity must or could settle an instrument by issuing a variable number of its own shares, and, as in this case, the obligation’s monetary value is based solely or predominantly on variations in the fair value of the company’s equity shares, but moves in the opposite direction, then the obligation to issue shares is to be recorded as a liability at the inception of the arrangement, and is adjusted with subsequent changes in the fair value of the underlying stock. The effect of the change in value of the obligation is reflected as “Private placement warrant expense” in the Company’s consolidated statements of operations. See Note 6, “Fair value of financial instruments,” for detail describing the valuation approach for the Private Placement Warrants.
	Long-lived assets
	Long-lived assets, such as property, plant and equipment and land, are evaluated for impairment whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable. If such review indicates that the carrying amount of long-lived assets is not recoverable, the carrying amount of such assets is reduced to fair value. There were no adjustments to the carrying values of long-lived assets during the years ended December 31, 2013 and 2012.
	Research & development and engineering costs
	The Company expenses research & development and engineering costs when incurred. Research & development costs classified within research & development and engineering expenses in the consolidated statements of operations, consist primarily of wages and materials related to engineering work and approximated $9.4 million, $6.8 million and $4.0 million for the years ended December 31, 2013, 2012, and 2011, respectively.
	Share-based compensation
	The Company accounts for share-based compensation expense for awards granted to employees for service over the service period based on the grant date fair value.
	Fair value of financial instruments
	The Company’s financial instruments include accounts receivable, accounts payable, revolving line of credit, notes payable and private placement warrants. The carrying amounts of accounts receivable and accounts payable approximate fair value because of their short-term nature. The carrying value of the revolving line of credit approximates fair value because the interest rates fluctuate with market interest rates or the fixed rates are based on current rates offered to the Company for debt with similar terms and maturities. Based upon the Company’s current credit agreement with Wells Fargo Bank, National Association, using the Company’s balances and interest rates as of December 31, 2013, and holding other variables constant, a 10% increase in the interest rates for the next 12 month period charged by the bank to the Company would have decreased the Company’s pre-tax earnings and cash flow by less than $100,000. The fair value of the private placement warrants is described below in Note 6, “Fair value of financial instruments.”
	Self-funded insurance
	The Company is self-insured for certain costs of its employee health insurance plan, although the Company obtains third-party insurance coverage to limit its exposure. The Company maintains a stop-loss insurance policy with individual and aggregate stop-loss coverage.
	Income taxes
	The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.
	The Company records net deferred tax assets to the extent it believes these assets will more likely than not be realized. In making such a determination, the Company considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. As of December 31, 2013 and 2012, the Company had not recorded a deferred tax asset valuation allowance.
	The Company records uncertain tax positions in accordance with ASC 740, Income Taxes , on the basis of a two-step process whereby (1) it determines whether it is more likely than not that the tax positions will be sustained based on the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold, the Company recognizes the largest amount of tax benefit that is greater than 50 percent likely to be realized upon ultimate settlement with the related tax authority. As of December 31, 2013, the Company had an unrecognized tax benefit of $570,000 for uncertain tax positions including interest and penalties. As of December 31, 2012, the Company had not recorded any unrecognized tax benefit for uncertain tax positions. The Company recognizes interest and penalties related to unrecognized tax benefits in income tax expense.
	Concentrations
	The Company generally maintains cash balances in various accounts at one financial institution in the Midwest. During 2013 and as of December 31, 2013, the Company maintained cash in non-interest bearing accounts at two financial institutions while transitioning its accounts from one financial institution to another financial institution. At December 31, 2013, cash accounts are insured by the Federal Deposit Insurance Corporation (FDIC) up to $250,000 per institution and per depositor. The Company’s cash balances exceeded the FDIC maximum insured amounts. At December 31, 2012, the Company had no uninsured cash balances.
	The Company is exposed to potential credit risks associated with its accounts receivable. The Company performs ongoing credit evaluations of its customers and generally does not require collateral on its accounts receivable. For certain non-U.S. trade receivables, the Company obtains trade credit insurance or requires letters of credit for those non-U.S. accounts for which trade credit insurance is not available or is insufficient. The Company has not experienced significant credit-related losses to date.
One customer (“Customer A”) individually accounted for more than 10% of the Company’s sales during one or more years from 2011 through 2013 and represented 16%, 16% and 15% of consolidated net sales in 2013, 2012, and 2011, respectively.
Three customers (“Customer A” referred to above, and “Customer B” and “Customer C”) individually accounted for more than 10% of consolidated accounts receivable at December 31, 2013 and 2012. At December 31, 2013 and 2012, Customer A represented 11% and 15% of consolidated accounts receivable, respectively. At December 31, 2013 and 2012, Customer B represented 18% of consolidated accounts receivable. At December 31, 2013 and 2012, Customer C represented 13% and 11% of consolidated accounts receivable, respectively.
Three vendors (“Vendor A,” “Vendor B” and “Vendor C”) individually accounted for more than 10% of the Company’s purchases during one or more years from 2011 through 2013. Vendor A accounted for 30%, 30% and 37% of the Company’s purchases in 2013, 2012 and 2011, respectively. Vendor B accounted for 16% of the Company’s purchases in 2012, and less than 10% of the Company’s purchases in 2013 and 2011. Vendor C accounted for 15% of the Company’s purchases in 2013, and less than 10% of the Company’s purchases in 2012 and 2011.

Recently_issued_accounting_pro

Recently issued accounting pronouncements	12 Months Ended
	Dec. 31, 2013
Accounting Changes And Error Corrections [Abstract]	'
Recently issued accounting pronouncements	'
	2. Recently issued accounting pronouncements
	The Company evaluates the pronouncements of various authoritative accounting organizations, including the FASB and the SEC, to determine the impact of new pronouncements on GAAP and the Company. There are no new accounting pronouncements that have been issued or adopted during the year ended December 31, 2013, that are expected to have a significant effect on the Company’s consolidated financial statements.

Reverse_recapitalization_of_Th

Reverse recapitalization of The W Group, private placement, reverse split and migratory merger	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Reverse recapitalization of The W Group, private placement, reverse split and migratory merger	'
	3. Reverse recapitalization of The W Group, private placement, reverse split and migratory merger
	On April 29, 2011, Power Solutions International, Inc. (formerly known as Format, Inc.) completed a reverse acquisition transaction (“Reverse Recapitalization”) in which PSI Merger Sub, Inc., a Delaware corporation that was newly-created as a wholly-owned subsidiary of Power Solutions International, Inc., merged with and into The W Group. The W Group remained as the surviving corporation of the reverse acquisition transaction and became a wholly-owned subsidiary of Power Solutions International, Inc. Pursuant to an agreement and plan of merger, all of the outstanding shares of common stock of The W Group held by the three stockholders of The W Group at the closing of the reverse acquisition transaction converted into, and Power Solutions International, Inc. issued to the three stockholders of The W Group, an aggregate of 10,000,000 shares of common stock (share amount prior to the Reverse Split (as defined below)) and 95,960.90289 shares of Series A Convertible Preferred Stock (both share amounts prior to the Reverse Split defined below).
	In accordance with ASC 805, Business Combinations, The W Group was considered the accounting acquiror for accounting purposes, and accounted for the transaction as a reverse recapitalization because (1) The W Group’s former stockholders received the greater portion of the voting rights in the combined entity, (2) The W Group’s senior management represented all of the senior management of the combined entity and (3) immediately prior to the transaction, Format, Inc., was a company with nominal operations and assets. Consequently, the assets and liabilities and the historical operations that are reflected in Power Solutions International, Inc.’s consolidated financial statements are those of The W Group and have been recorded at the historical cost basis of The W Group, with a recapitalization adjustment to report the issued equity of PSI. However, PSI has accounted for the reverse acquisition as a reverse recapitalization of The W Group, and no goodwill or other intangible assets have been recorded because immediately prior to, and at the time of, the reverse acquisition, Format Inc., the accounting acquiree, was a company with nominal assets and nominal operations, engaged to a limited extent in EDGARizing corporate documents for filing with the SEC and limited commercial printing services.
	The results of operations of Format, Inc. have not been included in the consolidated statements of operations from the date of the Reverse Recapitalization, April 29, 2011, because Format had nominal operations and assets, which consisted mostly of cash immediately prior to consummation of the Reverse Recapitalization transaction. In accordance with the accounting for an entity with nominal operations and assets under a reverse recapitalization transaction, the net income and equity of Format immediately prior to the Reverse Recapitalization were reclassified to preferred equity. The related party obligations owed by Format immediately prior to the Reverse Recapitalization were settled through the terms of a repurchase agreement, while the remaining obligations were settled with the available cash on Format Inc.’s balance sheet. Immediately prior to the reverse acquisition transaction, Format had assets with a net book value of $5,000 which were written off in connection with the transaction.
	Concurrent with the closing of the Reverse Recapitalization, Power Solutions International, Inc. and The W Group entered into a purchase agreement (“Private Placement”) whereby Power Solutions International, Inc. completed the sale of an aggregate of 18,000 shares of PSI preferred stock together with warrants (“Private Placement Warrants”) representing the right to purchase an aggregate of 24,000,007 shares of PSI common stock (share amount prior to the Reverse Split (as defined below)), subject to certain limitations on exercise. The shares of PSI preferred stock issued in the Private Placement were initially convertible into an aggregate of 48,000,007 shares of PSI common stock (share amount prior to the Reverse Split), subject to certain limitations. In consideration, Power Solutions International, Inc. and The W Group received proceeds of $18.0 million before transaction fees, costs and expenses of approximately $5.1 million in connection with the Reverse Recapitalization and Private Placement.
	In connection with the Private Placement, the Company also issued to Roth Capital Partners, LLC (“Roth”) a warrant (“Roth Warrant”) to purchase initially 3,360,000 shares of PSI common stock (share amount prior to the Reverse Split (as defined below)), subject to certain limitations on exercise set forth in the Roth Warrant. On September 1, 2011, the Roth Warrant was exercised.
	In connection with, and prior to the consummation of, the Reverse Recapitalization, the board of directors of Format approved a 1-for-32 reverse stock split of issued and outstanding shares of the Company’s common stock (“Reverse Split”), immediately following the effectiveness of which each 32 issued and outstanding shares of the Company’s common stock would automatically convert into one share of Company common stock. Any stockholder of the Company that would otherwise be entitled to a fraction of a share of the Company’s common stock (after aggregating all fractional shares of the Company’s common stock to be received by such holder) as a result of the Reverse Split, would receive an additional share of the Company’s common stock (i.e., the aggregate number of shares of the Company’s common stock of a stockholder resulting from the Reverse Split would be rounded up to the nearest whole number).
	Further, in connection with the Reverse Recapitalization and the Private Placement, the board of directors of Format approved a migratory merger (“Migratory Merger”) of the Company with and into a Delaware corporation that was newly-created as a wholly-owned subsidiary of the Company, which Migratory Merger would be effected for the purpose of changing the Company’s jurisdiction of incorporation from Nevada to Delaware. The parties agreed that the Reverse Split would be effected through the consummation of the Migratory Merger, whereby each 32 shares of the Company’s common stock would be converted into one share of common stock of the surviving entity in the Migratory Merger. The consummation of the Migratory Merger would constitute the Reverse Split for all purposes, as contemplated by the transaction documents entered into in connection with the consummation of the Reverse Recapitalization and the Private Placement. The consummation by the Company of the Migratory Merger, including the Reverse Split to be effected thereby, was subject to the approval of the Company’s stockholders.
	The Migratory Merger and Reverse Split were approved by the stockholders at a special meeting of the Company’s stockholders held on August 25, 2011, and the Migratory Merger and the Reverse Split were effective on August 26, 2011. The Reverse Split did not affect the number of authorized shares of common stock of the Company or the par value per share of the Company’s common stock. Immediately following the effectiveness of the Reverse Split, each issued and outstanding share of Company preferred stock automatically converted into a number of shares of Company common stock equal to $1,000 divided by the conversion price then in effect.
	The impact of the above transactions on the Company’s issued capital is further described in Note 12, “Stockholders’ equity.”

Earnings_per_share

Earnings per share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings per share	'
	4. Earnings per share
	The Company computes earnings (loss) per share by applying the guidance stated in ASC 260, Earnings per Share, to determine the net income (loss) available per share of its common stock. Prior to the conversion of the shares of Company preferred stock to Company common stock as described in Note 3, “Reverse recapitalization of The W Group, private placement, reverse split and migratory merger,” earnings per share was calculated using the two-class method because the convertible preferred shares participated in any undistributed earnings with the common stockholders, specifically, on a one-to-one, as-if converted basis, without giving effect to the limitations on conversion of the preferred stock. Thus, under the two-class method, earnings allocated to preferred shares were based upon the proportion of the “as-if converted” preferred shares to the combined total of common shares, plus the “as-if converted” shares. Basic and diluted EPS under the two-class method were then calculated as earnings allocated to common shares divided by the weighted average of the actual common shares outstanding during the reporting period after giving effect to the adjustment for the Reverse Split.
	Though the Company did not pay dividends prior to the Reverse Split, because the preferred stock granted the right to participate in undistributed earnings with Company common stock, it was considered a participating security, and the Company applied the two-class method to calculate per share amounts for distributed and undistributed earnings required under ASC 260, until all of the shares of preferred stock were converted into shares of Company common stock. Upon the effectiveness of the Reverse Split on August 26, 2011, all shares of the Company’s preferred stock automatically converted into shares of the Company’s common stock. Effective upon, and at all times since, the conversion of the Company preferred stock to Company common stock, the treasury stock method has been used to compute earnings (loss) per share.
	Computation of undistributed earnings and allocation of undistributed earnings to participating securities
	The undistributed earnings were allocable to the participating securities (i.e., common shares and the convertible preferred shares) on a pro rata basis under the two-class method until August 26, 2011, the effective date of the Migratory Merger, through which the Reverse Split was consummated (including the automatic conversion of preferred stock effected thereby). Through August 26, 2011, the allocation of undistributed earnings to each class of participating stock was based upon the proportionate ratio of average outstanding shares of each class of stock to the total average shares outstanding as adjusted for the Reverse Split, on an as-if converted basis. Upon the effectiveness of the Migratory Merger, each of the preferred shares was automatically converted into a number of shares of common stock of the surviving entity in the Migratory Merger, equal to one-thousand dollars divided by $12.00, the per share conversion price for the preferred stock, as adjusted for the Reverse Split, and thereafter, no PSI preferred shares existed. Accordingly, all undistributed earnings were allocated to shares of common stock after conversion of the shares of preferred stock into shares of common stock on August 26, 2011.
	Computation of dilutive common shares
	The Company utilizes the treasury stock method described in ASC 260-10-55 to determine the number of treasury shares assumed to be purchased, with any residual shares representing the incremental common shares to be issued and included in diluted EPS. The Roth Warrant (until exercised), the Company’s Private Placement Warrants, the stock appreciation rights (“SAR” as described in Note 9, “2012 Incentive compensation plan”) and restricted stock (as also described in Note 9, “2012 Incentive compensation plan) were evaluated for their potentially dilutive effect under the treasury stock method.
	As of December 31, 2013, due to the loss reported in the consolidated statements of operating results, any potentially issuable shares of Company common stock associated with the Private Placement Warrants, SAR and restricted stock granted are not included in the dilutive EPS calculation. These potential shares were excluded from the diluted EPS calculation because they have an anti-dilutive effect under the treasury stock method.
	The Company’s average closing market price of the Company’s common stock for the year ended December 31, 2012 was $15.51 per share. Although the exercise price of the Private Placement Warrants was $13.00 per share, all of the remaining potentially issuable shares of common stock associated with the Private Placement Warrants were determined to be anti-dilutive due to warrant valuation expenses that were included in the consolidated statement of operating results, but such expenses were required to be excluded from operating results in the fully dilutive computation. As of December 31, 2012, based on the Company’s estimated average fair value as noted above and the SAR strike price of $22.07 per share, as well as certain other requirements as defined in the stock appreciation rights award agreement, the SAR was not dilutive to the Company’s earnings per share. Accordingly, all potentially issuable shares of Company common stock associated with the SAR were excluded from the diluted EPS calculation.
	Due to the Company’s limited trading volume during the year ended December 31, 2011, the Company estimated the average fair value of its common shares using the estimated fair value derived in the periodic valuations of its Private Placement Warrants liability. Based upon an average estimated fair value of $9.55 per share of the Company’s common stock for the year ended December 31, 2011, and an exercise price of $13.00 per share, all of the potentially issuable shares of common stock were excluded from the diluted EPS calculation.
	During the year ended December 31, 2013 and 2012, portions of the Private Placement Warrants were exercised, resulting in the issuance of 339,410 and 13,750 shares of Company common stock, respectively. The Roth Warrant was cashlessly exercised in full on September 1, 2011, for an aggregate of 62,116 shares of common stock based upon the value of the Company’s common stock as determined pursuant to the Roth Warrant. See Note 12, “Stockholders’ equity” for further detail of these transactions.

Property_plant_and_equipment_n

Property, plant and equipment, net	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Property, plant and equipment, net	'
	5. Property, plant and equipment, net
	The components of property, plant and equipment as of December 31, were as follows:
		2013			2012
	Land	$	260		$	260
	Building and improvements		4,125			3,882
	Office furniture and equipment		2,723			2,172
	Tooling and equipment		7,595			5,505
	Transportation equipment		203			223
	Construction in progress		4,844			594
	Property, plant and equipment, at cost		19,750			12,636
	Accumulated depreciation		(6,646	)		(5,491	)
	Property, plant and equipment, net	$	13,104		$	7,145
	Property, plant and equipment are recorded at cost. The Company computes depreciation using the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized over the shorter of the assets’ useful economic lives or the period from the date the assets are placed in service to the end of the lease term including renewal periods that are considered by the Company to be reasonably assured of being exercised. Depreciation expense totaled $1,528,000, $1,074,000, and $785,000, for the years ended December 31, 2013, 2012, and 2011, respectively.
	Repairs and maintenance costs are charged directly to expense as incurred. Major renewals or replacements that substantially extend the useful life of an asset are capitalized and depreciated.
	Estimated useful lives by major asset category are as follows:
		Life (in years)
	Buildings and improvements	39 Lesser of (i) 39 years, (ii) expected useful life of improvement or (ii) life of lease (including likely extension thereof)
	Tooling and equipment	Up to 10 years
	Office furniture and equipment	5 – 10
	Transportation equipment	3 – 5

Fair_value_of_financial_instru

Fair value of financial instruments	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair value of financial instruments	'
	6. Fair value of financial instruments
	As of December 31, 2013 and 2012, the Company measured its financial assets and liabilities under the amended ASC 820, Fair Value Measurements and Disclosures of the Accounting Standards Codification, which defines fair value as the price that would be received to sell an asset or paid to transfer a liability (i.e., exit price) in an orderly transaction between market participants at the measurement date. It also establishes a three-level valuation hierarchy for disclosures of fair value measurement as follows:
	Level 1 — quoted prices in active markets for identical assets or liabilities;
	Level 2 — other significant observable inputs for the assets or liabilities through corroborations with market data at the measurement date; and
	Level 3 — significant unobservable inputs that reflect management’s best estimate of what market participants would use to price the assets or liabilities at the measurement date.
	Private placement warrants liability
	As of December 31, 2013 and 2012, the Company’s Private Placement Warrants were measured at fair value under ASC 820. The Company’s liability for the Private Placement Warrants is measured at fair value based on unobservable inputs, and thus is considered a Level 3 financial instrument. The Company analyzes financial instruments with features of both liabilities and equity under ASC 480, Distinguishing Liabilities from Equity and ASC 815, Derivatives and Hedging.
	As of December 31, 2013 and 2012, the Company estimated the fair value of its Private Placement Warrants with a publicly traded stock pricing approach using the Black-Scholes option pricing model. The inputs of the Black-Scholes option pricing model as of December 31, were as follows:
		2013			2012
	Market value of the Company’s common stock	$	75.1		$	16.18
	Exercise price	$	13		$	13
	Risk-free interest rate		0.51	%		0.42	%
	Estimated price volatility		42.5	%		45	%
	Marketability discount		—			15	%
	Contractual term		2.33 years			3.33 years
	Dividend yield		—			—
	The market value of the Company’s common stock was based on its closing price on December 31, 2013 and 2012, the date of each valuation. The volatility factors noted above represented the upper end of the range of implied volatility of publicly traded call options of benchmark companies. During 2013, there was a significant increase in the Company’s stock price and daily average trading volume and additional Private Placement Warrants were exercised. Additionally, as described further under Note 12, “Stockholders’ equity,” the Company completed an underwritten public offering of its common stock, which significantly increased the Company’s public float. In consideration of these factors, the Company no longer believes the Private Placement Warrants to be burdened by a lack of marketability. Accordingly, the warrant valuation as of December 31, 2013, was not discounted. As of December 31, 2012, the warrant valuation was discounted by 15%, reflecting the fact that the Private Placement Warrants were not directly traded and, at the time, were burdened by a lack of marketability. If all other assumptions were held constant, the recorded liability of the Private Placement Warrants would increase or decrease by approximately $2.5 million due to a 10% change in the enterprise value of the Company based on the Black-Scholes option pricing model.
	The following table summarizes fair value measurements by level as of December 31, 2013, for the Company’s level 3 financial liability measured at fair value on a recurring basis:
		Level 1		Level 2	Level 3
	Private placement warrants liability				$	24,525
	The following table summarizes fair value measurements by level as of December 31, 2012, for the Company’s level 3 financial liability measured at fair value on a recurring basis:
		Level 1		Level 2	Level 3
	Private placement warrants liability				$	3,666
	The following table summarizes the change in the estimated fair value of the Company’s Level 3 financial instrument as of December 31:
		2013			2012
	Balance at beginning of year	$	3,666		$	3,270
	Fair value of private placement warrants exercised		(7,172	)		(52	)
	Increase in the value of private placement warrants		28,031			448
	Balance at end of year	$	24,525		$	3,666
	For the year ended December 31, 2013, 2012 and 2011, the Company recognized expenses of $28,031,000, $448,000 and $382,000, respectively, due to an increase in the estimated fair value of the Company’s Private Placement Warrants. These expenses were recorded as “Private placement warrant expense” on the Company’s consolidated statements of operations for the respective periods.
	Financial assets and liabilities not measured at fair value
	As of December 31, 2013 and 2012, the Company’s revolving line of credit, including accrued interest, recorded on the consolidated balance sheets were carried at cost. The carrying value of the revolving line of credit approximates fair value because the interest rates fluctuate with market interest rates or the fixed rates approximate current rates offered to the Company for debt with similar terms and maturities, and the Company’s credit profile has not changed significantly since the origination of these financial liabilities. Under ASC 825, Financial Instruments, these financial liabilities are defined as Level 2 in the three-level valuation hierarchy, as the inputs to their valuation are market observable.

Revolving_line_of_credit

Revolving line of credit	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Revolving line of credit	'
	7. Revolving line of credit
	On April 29, 2011, in connection with the closing of the Reverse Recapitalization, The W Group and Power Solutions International, Inc. entered into a loan and security agreement (“Harris Agreement”) with BMO Harris Bank N.A. (“BMO Bank”), which replaced the existing loan and security agreement that The W Group had with a senior lender.
	The Harris Agreement, prior to its March 20, 2012 amendment, provided for borrowings up to $35.0 million under a revolving line of credit and was scheduled to mature on April 29, 2014. The Harris Agreement was collateralized by substantially all of the Company’s assets. The Company was required to meet certain financial covenants, including a minimum monthly fixed charge coverage ratio and a limitation on annual capital expenditures. The Harris Agreement contained customary covenants and restrictions, including agreements to provide financial information, comply with laws, pay taxes and maintain insurance, restrictions on the incurrence of certain indebtedness, guarantees and liens, restrictions on mergers, acquisitions and certain dispositions of assets, and restrictions on the payment of dividends and distributions. In addition, the Harris Agreement required cash accounts to be held with BMO Bank. Historically, the Company’s financing arrangements, including the Harris Agreement, required that cash received be applied against the Company’s revolving line of credit. Accordingly, the Company did not maintain cash on its consolidated balance sheet during the term of the Harris Agreement and the loan and security agreement immediately preceding the Harris Agreement, but instead funded its operations through borrowings under its revolving line of credit.
	Under the Harris Agreement, prior to its amendment on March 20, 2012: (a) the Company was a party to the Harris Agreement and pledged all of its shares of The W Group to BMO Bank as collateral for the revolving line of credit; (b) there were no term loans; (c) the revolving line of credit bore interest at BMO Bank’s prime rate plus an applicable margin ranging from 0% to 0.50%; or, at the Company’s option, all or a portion of the revolving line of credit could have been designated to bear interest at LIBOR plus an applicable margin ranging from 2.00% to 2.50%; (d) the Company had a limitation on annual capital expenditures; and (e) a fixed charge coverage ratio was included, except that this fixed charge coverage ratio excluded certain historical debt service costs and certain other one-time expenses (each as defined in the Harris Agreement).
	On March 20, 2012, the loan and security agreement with BMO Bank was amended (the Harris Agreement, as so amended, the “Amended Harris Agreement I”) to increase the total credit facility from $35.0 million to $50.0 million and to extend the maturity date to March 20, 2017. Under the terms of the Amended Harris Agreement I: (a) the revolving line of credit bore interest at BMO Bank’s prime rate plus an applicable margin ranging from 0% to 0.50%; or, at the Company’s option, all or a portion of the revolving line of credit could have been designated to bear interest at LIBOR plus an applicable margin ranging from 1.75% to 2.25%; (b) the unused revolving line fee was reduced to 0.25%; and (c) the Company was only required to report its compliance with the fixed charge coverage ratio for any month when the Company’s Excess Availability, (as defined in the Amended Harris Agreement I), was less than the Liquidity Threshold. The Liquidity Threshold was defined in the Amended Harris Agreement I as the greater of (i) $7.5 million or (ii) 12.5% of the total credit facility of $50.0 million, as may have been reduced from time to time pursuant to the terms of the Amended Harris Agreement I. When required to report its compliance with the fixed charge coverage ratio, the Company would have had to continue to report its compliance with the fixed charge coverage ratio until it had exceeded the Liquidity Threshold for 60 consecutive days. Additionally, under the Amended Harris Agreement I, cash balances were no longer automatically swept by BMO Bank, and, as a result, from time to time, the Company carried cash balances on its consolidated balance sheet since the date of the Amended Harris Agreement I.
	On November 8, 2012, the loan and security agreement with BMO Bank was further amended (the Harris Agreement, as so amended, “Amended Harris Agreement II”). The Amended Harris Agreement II increased the Company’s thresholds for certain transactions, allowing the Company to: (i) make acquisitions up to an aggregate of $2.0 million, (ii) enter into joint ventures up to an aggregate of $2.0 million, up from $500,000, and (iii) make annual capital expenditures up to an aggregate of $8.0 million, up from $4.0 million. These thresholds were subject to certain limitations as set forth in the Amended Harris Agreement II.
	On June 28, 2013, the Company entered into a credit agreement with Wells Fargo Bank, National Association, (the “Wells Credit Agreement”) which replaced the Amended Harris Agreement II with BMO Bank. The Wells Credit Agreement enables the Company to borrow under a revolving line of credit which is secured by substantially all of the Company’s tangible and intangible assets (other than real property). The Wells Credit Agreement (a) provides an initial maximum $75.0 million revolving line of credit to the Company, which, at the Company’s request and subject to the terms of the Wells Credit Agreement, may be increased up to $100.0 million during the term of the Wells Credit Agreement; (b) bears interest at the Wells Fargo Bank’s prime rate plus an applicable margin ranging from 0% to 0.50%; or at the Company’s option, all or a portion of the revolving line of credit can be designated to bear interest at LIBOR plus an applicable margin ranging from 1.50% to 2.00%; (c) has an unused line fee of 0.25% and (d) requires the Company to report its fixed charge coverage ratio, when its Excess Availability (as defined in the Wells Credit Agreement) is less than the Threshold Amount (as defined in the Wells Credit Agreement), for a period of 60 consecutive days, until the Company’s availability is greater than or equal to the Threshold Amount. The Threshold Amount is defined in the Wells Credit Agreement as the greater of (i) $9,375,000 or (ii) 12.5% of the maximum revolver amount of $75.0 million or as it may be increased during the term of the Wells Credit Agreement up to $100.0 million.
	Under the Wells Credit Agreement, the amount that the Company may borrow is limited to the lesser of the maximum available amount and borrowing base. The borrowing base is calculated as a percentage of the Company’s eligible accounts receivable and eligible inventory (as defined in the Wells Credit Agreement). The Company is required to meet certain financial covenants, including a minimum monthly fixed charge coverage ratio of not less than 1.0 to 1.0, the testing of which commences on the last day of the month prior to the date the Company’s Excess Availability (as defined in the Wells Credit Agreement) is less than the Threshold Amount and continuing for a period of 60 consecutive days, until the Company’s availability is greater than or equal to the Threshold Amount. The Wells Credit Agreement also contains customary covenants and restrictions applicable to the Company, including agreements to provide financial information, comply with laws, pay taxes and maintain insurance, restrictions on the incurrence of certain indebtedness, guarantees and liens, restrictions on mergers, acquisitions and certain dispositions of assets, and restrictions on the payment of dividends and distributions. In addition, the Wells Credit Agreement requires the Company’s cash accounts to be held with Wells Fargo Bank subject to an interim period during which the Company’s cash accounts and activities are transitioned from BMO Bank to Wells Fargo Bank. The Credit Agreement is scheduled to mature on June 28, 2018.
	In connection with the refinancing, the Company recognized a $270,000 loss on extinguishment of debt for the unamortized deferred financing costs related to the BMO Bank agreement, in the year ended December 31, 2013.
	As of December 31, 2013, $8.9 million of the Company’s outstanding borrowings under its revolving line of credit bore interest at the prime rate, which equaled 3.25% with the applicable margin included. The remaining outstanding balance of $9.0 million as of December 31, 2013, had been designated to bear interest at the LIBOR rate, plus an applicable margin, which equaled 1.67%. The unused and available revolving line of credit balance was $47.9 million at December 31, 2013.
	As of December 31, 2012, $5.9 million of the Company’s outstanding borrowings under its revolving line of credit bore interest at the prime rate, which equaled 3.25% with the applicable margin included. The remaining outstanding balance of $25.0 million as of December 31, 2012, had been designated to bear interest at the LIBOR rate, plus an applicable margin which equaled 1.96%. The unused and available revolving line of credit balance was $19.1 million at December 31, 2012.

Leases

Leases	12 Months Ended
	Dec. 31, 2013
Leases [Abstract]	'
Leases	'
	8. Leases
	The Company leases certain buildings and equipment under various noncancelable operating lease agreements that contain renewal provisions. Rent expense under these leases approximated $2.7 million, $2.5 million and $1.7 million for the years ended December 31, 2013, 2012, and 2011, respectively.
	The future minimum lease payments due under operating leases as of December 31, 2013, were as follows:
	2014	$	2,556
	2015		2,529
	2016		2,352
	2017		1,916
	2018		1,010
		$	10,363

2012_Incentive_compensation_pl

2012 Incentive compensation plan	12 Months Ended
	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
2012 Incentive compensation plan	'
	9. 2012 Incentive compensation plan
	On May 30, 2012, the Board of Directors of the Company approved and adopted the Company’s 2012 Incentive Compensation Plan (the “2012 Plan”), and the 2012 Plan was approved by the Company’s stockholders at the Company’s annual meeting held on August 29, 2012. The 2012 Plan is administered by the Compensation Committee of the Board of Directors, which consists only of independent, non-employee directors.
	The 2012 Plan is a broad-based plan which allows for a variety of different types of awards, including (but not limited to) non-qualified stock options, incentive stock options, SAR, restricted stock, deferred stock and performance units, to be made to the Company’s executive officers, employees, consultants and directors. The 2012 Plan is intended to assist the Company in attracting and retaining exceptionally qualified employees, consultants and directors to support the sustained progress, growth and profitability of the Company.
	Under the 2012 Plan, 830,925 shares of the Company’s common stock were initially made available for awards pursuant to the 2012 Plan. On July 31, 2013, the Board of Directors of the Company, upon recommendation of the Compensation Committee, adopted an amendment to the 2012 Plan to increase the number of shares of common stock available for issuance under the 2012 Plan by 700,000 shares. This amendment was approved by the Company’s stockholders at the Company’s annual meeting of stockholders held on August 28, 2013. Of the Company’s 1,530,925 shares reserved for awards under the 2012 Plan, 543,872 shares were originally underlying a SAR award granted to the Company’s Chief Operating Officer on June 6, 2012 and 162,993 shares of restricted stock have been granted to date to eligible employees (both of which are further described below). As of December 31, 2013, the Company had 824,060 shares of common stock available for future issuance under the 2012 Plan.
	SAR award agreement
	On June 6, 2012 (the “SAR Grant Date”), the Compensation Committee of the Board of Directors approved, and the Company granted, a SAR to the Company’s Chief Operating Officer (“Grantee”), pursuant to the 2012 Plan and a Stock Appreciation Rights Award Agreement (“SAR Award Agreement”), dated as of the SAR Grant Date. The SAR granted to the Grantee covers an aggregate of 543,872 shares of Company common stock and is exercisable only in whole shares at a price per share of $22.07. The SAR expires on the tenth anniversary of the SAR Grant Date.
	The SAR granted to the Grantee vests and becomes exercisable ratably on each of the first three anniversaries of the SAR Grant Date (“graded vesting”). In addition, the SAR did not become exercisable until the date that was the last of any seven Valuation Dates (as defined in the SAR Award Agreement) within any period of ten or fewer consecutive Valuation Dates that commenced after the Grant Date and prior to the expiration date on each of which the market value per share of Company common stock is at least $22.07. This market condition was met during the year ended December 31, 2013.
	The SAR entitles the Grantee to receive, upon any exercise, a number of shares of the Company’s common stock equal to (i) the number of shares for which the SAR is being exercised multiplied by the value of one share of the Company’s common stock on the date of exercise (determined as provided in the SAR Award Agreement), (ii) less the number of shares for which the SAR is being exercised multiplied by $22.07, (iii) divided by the value of one share of the Company’s common stock on the date of exercise (determined as provided in the SAR Award Agreement). The exercised SAR is to be settled only in whole shares of the Company’s common stock, and the value of any fractional share of the Company’s common stock will be forfeited.
	The SAR is accounted for as equity, in accordance with ASC 718, Compensation — Stock Compensation, and states that options or similar instruments on shares shall be classified as liabilities if either the underlying shares are classified as liabilities or the entity can be required under any circumstance to settle the option or similar instrument by transferring cash or other assets. The Company’s underlying shares are classified as equity, and under the terms of the SAR Award Agreement, the Company must settle the exercised portion of the SAR in shares of the Company’s common stock. As such, the Company has accounted for the SAR as equity.
	As of the SAR Grant Date, the fair value of the SAR was estimated using the Black-Scholes option pricing model. The inputs of the Black-Scholes option pricing model included the fair value of the Company’s common stock, exercise price, risk-free interest rate, estimated price volatility, term and dividend yield. Due to the limited trading activity in the Company’s common stock at the date of issuance of the SAR, the fair value of the Company’s common stock (i.e. equity) was established through multiple valuation techniques, including (a) the income approach in the form of the discounted cash flow method and (b) the market approach in the form of (i) the guideline public company method and (ii) the merger and acquisition method. After the equity was determined it was then allocated to the SAR using the Option Pricing Method. In addition to that described above, other assumptions used in the Black-Scholes method included the following as of the SAR Grant Date: an expected term of 6.0 years, a risk-free interest rate of 0.92%, an anticipated volatility factor of 55.0% and a zero dividend yield. The resulting valuation as of the SAR Grant Date, was discounted by 15%, reflecting an assessment of the trading activity of the Company’s common stock (and by extension the SAR). The suggested value from the Black-Scholes method reflected a fully marketable security that was not burdened by limited marketability; however, at that time, the Company’s common stock (and by extension the SAR) did not have regular trading activity. Therefore, the Company considered it necessary to incorporate a discount to reflect the limited liquidity associated with the SAR. This approach was consistent with that utilized to value the Company’s Private Placement Warrants at that time. The resulting fair value of the SAR granted was $3.31 per underlying share.
	ASC 718, Compensation — Stock Compensation, was utilized in order to estimate the fair value of the SAR. The term “fair value” has been defined in Note 6, “Fair value of financial instruments.” ASC 718 requires an entity to measure the cost of employee services received in exchange for an award of equity instruments based on the fair value of the award as of the grant date. That cost is then recognized over the period during which an employee is required to provide service in exchange for the award. ASC 718-10-55-72 provides that, if vesting (or exercisability) of an award is based on satisfying both a market condition and a performance or service condition and it is probable that the performance or service condition will be satisfied, the initial estimate of the service period is the longest of the explicit, implicit or derived service period. The Company has computed compensation expense by applying the guidance stated in ASC 718, on a straight-line basis over the requisite service period for each separately vesting portion of the award as if the award was, in-substance, multiple awards (graded vesting attribution method). Since, as noted above, the SAR granted by the Company includes both a market and service condition, the Company used the longest of the periods to define its requisite service period in each separately vesting portion or tranche. To determine the derived service period associated with the SAR’s market condition, the Company performed a Monte Carlo analysis in order to estimate the likely timeframe until the Company’s public equivalent value would exceed its aggregate exercise price over a period of seven days within a period of 10 or fewer trading days (i.e. the value at which the per share value of the Company’s equity exceeds $22.07). Based on the results of this analysis, the derived service period associated with the SAR’s market condition was determined to be 1.78 years. Thus, compensation expense for the first tranche was computed on a straight-line basis over the derived service period of 1.78 years. The second and third tranches were computed on a straight-line basis over the explicit service period. In the year ended December 31, 2013 and 2012, the Company recognized $907,000 and $478,000, respectively, of expense for the SAR granted. There was no similar expense recorded as of December 31, 2011.
	During the year ended December 31, 2013, the Grantee exercised the vested portion of his SAR. The impact of this transaction on the Company’s issued capital is described in Note 12, “Stockholders’ equity.”
	As of December 31, 2013, there was $415,000 of total unrecognized compensation expense related to the SAR granted under the Plan. The Company expects the SAR expense to continue to be recognized over approximately the next eighteen months.
	Restricted stock awards
	On June 17, 2013, (the “June Restricted Stock Grant Date”), the Compensation Committee of the Board of Directors approved, and the Company granted, 136,661 shares of Company restricted stock (“Restricted Stock”) to various employees pursuant to the 2012 Plan and subject in each case to a Restricted Stock Award Agreement (“Restricted Stock Award Agreement”). The fair value of the Restricted Stock was $36.00 on the June Restricted Stock Grant Date.
	On August 28, 2013 and August 29, 2013, the Compensation Committee of the Board of Directors approved, and the Company granted, 3,000 shares and 4,833 shares, respectively, of Restricted Stock to certain employees pursuant to the 2012 Plan and subject to a Restricted Stock Award Agreement. The fair value of the Restricted Stock was $51.91 and $52.28 on August 28, 2013, and August 29, 2013, respectively.
	On October 1, 2013, October 14, 2013 and December 10, 2013, the Compensation Committee of the Board of Directors approved, and the Company granted, 6,999 shares, 10,000 shares and 1,500 shares, respectively, of Restricted Stock to certain employees pursuant to the 2012 Plan and subject to a Restricted Stock Award Agreement. The fair value of the Restricted Stock was $57.81, $56.28 and $71.81 on October 1, 2013, October 14, 2013 and December 10, 2013, respectively.
	These shares of Restricted Stock vest in various increments and periods over a maximum of ten years from the date the stock was granted as defined under the applicable Restricted Stock Award Agreement. During the year ended December 31, 2013, the Company recognized approximately $361,000, of compensation expense in connection with the Restricted Stock granted under the 2012 Plan. As of December 31, 2013, there was approximately $6,043,000 of total unrecognized compensation expense related to the Restricted Stock granted under the 2012 Plan. The total Restricted Stock expense is expected to be approximately $6,404,000, and the weighted-average period over which total unrecognized compensation cost is expected to be recognized is approximately 8 years. As there were no restricted stock awards prior to 2013, the Company did not incur any restricted stock expense in the years ended December 31, 2012 and 2011.

Defined_contribution_plan

Defined contribution plan	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Defined contribution plan	'
	10. Defined contribution plan
	The Company sponsors a retirement savings plan for employees meeting certain eligibility requirements. Participants may choose from various investment options and can contribute an amount of their eligible compensation annually as defined by the plan document, subject to Internal Revenue Code limitations. The plan was amended in 2013, to enable employees to invest in a fund which exclusively invests in the Company’s stock. The plan is funded by participant contributions and discretionary Company contributions. The Company made no discretionary contributions during 2013, 2012 or 2011.

Income_taxes

Income taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income taxes	'
	11. Income taxes
	The expense (benefit) for income taxes for the years ended December 31, was as follows:
		2013			2012			2011
	Current tax expense
	Federal	$	2,629		$	3,806		$	2,816
	State		955			1,053			827
			3,584			4,859			3,643
	Deferred tax expense (benefit)
	Federal		967			(542	)		(809	)
	State		208			(174	)		(61	)
			1,175			(716	)		(870	)
	Total tax expense	$	4,759		$	4,143		$	2,773
	A reconciliation between the Company’s effective tax rate on income from continuing operations and the statutory tax rate for the years ended December 31, was as follows:
		2013						2012						2011
		Amount			Percent			Amount			Percent			Amount			Percent
	Income tax (benefit) expense at federal statutory rate	$	(4,760	)		34	%	$	3,687			34	%	$	2,324			34	%
	State income tax, net of federal benefit		848			(6.1	)		581			5.4			506			7.4
	Non-deductible transaction expenses		—			—			—			—			259			3.8
	Non-deductible private placement warrant expense		9,531			(68.0	)		152			1.4			130			1.9
	Domestic production activity		(376	)		2.7			(221	)		(2.0	)		(216	)		(3.1	)
	Research tax credits		(1,054	)		7.5			(44	)		(0.4	)		(240	)		(3.5	)
	Tax reserve reassessment		570			(4.1	)		—			—			—			—
	Other, net		—			—			(12	)		(0.2	)		10			0.1
	Income tax expense	$	4,759			(34.0	)%	$	4,143			38.2	%	$	2,773			40.6	%
	The Company recognized a pre-tax loss of $14,001,000 which included $28,031,000 of permanently excludable expenses associated with the Company’s private placement warrants for the year ended December 31, 2013. Excluding this expense, the Company’s pre-tax income was $14,030,000. This adjusted pre-tax income compares to $11,293,000 of pre-tax income after excluding $448,000 of expenses associated with the Company’s private placement warrants for the year ended December 31, 2012. The Company’s income tax expense for the year ended December 31, 2013, increased principally due to the higher taxable income realized in 2013 as compared with 2012. Partially offsetting the increase in income tax expense for the year ended December 31, 2013 were federal research tax credits recorded in 2013 for the years ended December 31, 2012 and 2013, net of unrecognized tax benefits, as described above. On January 2, 2013, the American Taxpayer Relief Act of 2012 (“Act”) was signed into law. Some of the provisions of the Act were retroactive to January 1, 2012, including the Research and Experimentation Credit, which was extended through the end of 2013. Because a change in tax law is accounted for in the period of enactment, certain provisions of the Act benefiting the Company’s 2012 federal taxes, including R&D credit, were not recognized in the Company’s financial results until 2013. As the Act was signed into law in 2013, this federal research tax credit for the year ended December 31, 2012 of $413,000, along with the federal research tax credit estimated for 2013 of $641,000, were recorded in the Company’s financial results in the year ended December 31, 2013.
	The Company generates research tax credits as a result of its research & development activities which reduce the Company’s effective income tax rate. In general, these credits are general business credits and may be carried forward up to 20 years to be offset against future taxable income.
	As the Company reported a loss before income taxes in the year ended December 31, 2013, an effective income tax rate is not a meaningful calculation. The Company’s effective income tax rate was 38.2% in the year ended December 31, 2012. Excluding the expenses associated with the change in the private placement warrants in 2013 and 2012, the Company’s effective income tax rates were 33.9% and 36.7%, respectively.
	The Company’s effective income tax rate for the year ended December 31, 2011, was 40.6%. The Company’s effective income tax rate in 2011 was adversely impacted by non-deductible expenses associated with certain transaction costs incurred in connection with the Reverse Recapitalization.
	Changes in tax laws and rates may affect recorded deferred tax assets and liabilities and our effective tax rate in the future.
	On September 19, 2013, the US Department of Treasury finalized tangible property regulations and reissued in proposed form the regulations addressing accounting for the disposal of components of tangible property. These proposed regulations generally apply to taxable years beginning in 2014, with the option for early adoption. Because changes in tax law are accounted for in the period of enactment, certain provisions of the legislation could impact the Company’s classification of its deferred tax assets and liabilities on the balance sheet and are not expected to have an impact to the Company’s effective tax rate. The impact of adopting these regulations is expected to be primarily timing in nature and is not likely to have a material effect on the financial statements.
	Components of the deferred income tax assets and liabilities consisted of the following as of December 31:
		2013			2012
	Deferred tax assets
	Inventory	$	1,630		$	862
	Allowances and bad debts		196			184
	Accrued warranty		496			276
	Accrued wages and benefits		359			331
	Stock compensation		490			192
	Deferred revenue		—			512
	Other		302			54
	Total deferred tax assets		3,473			2,411
	Deferred tax liabilities
	Tax depreciation in excess of book		(966	)		(371	)
	Total deferred tax liabilities		(966	)		(371	)
	Net deferred tax assets	$	2,507		$	2,040
	The Company’s net deferred tax assets and liabilities are presented as follows in the Company’s consolidated balance sheets as of December 31:
		2013			2012
	Current deferred tax assets, net	$	2,811		$	2,176
	Non-current deferred tax liabilities, net		(304	)		(136	)
	Net deferred tax assets	$	2,507		$	2,040
	In preparing the Company’s consolidated financial statements, management has assessed the likelihood that its deferred income tax assets will be realized from future taxable income. In evaluating the ability to recover its deferred income tax assets, management considers all available evidence, positive and negative; including the Company’s operating results, ongoing tax planning and forecasts of future taxable income on a jurisdiction by jurisdiction basis. A valuation allowance is established if it is determined that it is more likely than not that some portion or all of the net deferred income tax assets will not be realized. Management exercises significant judgment in determining the Company’s provisions for income taxes, its deferred income tax assets and liabilities and its future taxable income for purposes of assessing its ability to utilize any future tax benefit from its deferred income tax assets.
	Although management believes that its tax estimates are reasonable, the ultimate tax determination involves significant judgments that could become subject to audit by tax authorities in the ordinary course of business. As of each reporting date management considers new evidence, both positive and negative, that could impact management’s view with regards to future realization of deferred tax assets. As of December 31, 2013, management believes that is it more likely than not that all of the Company’s deferred income tax assets will be realized and no valuation allowance is required on its US deferred tax assets.
	The Company recognizes interest and penalties related to unrecognized tax benefits in income tax expense. As of December 31, 2013, the Company had $15,000 accrued for the payment of interest and penalties. As of December 31, 2012, the Company had no amounts accrued for interest or penalties.
	The change in unrecognized tax benefits excluding interest and penalties for the year ended December 31, 2013 was as follows:
	Balance at December 31, 2012	$	—
	Gross increases — current period tax positions		555
	Balance at December 31, 2013	$	555
	As of December 31, 2013, Management believes the liability for unrecognized tax benefits could decrease by approximately $148,000 in 2014 due to lapses in the statute of limitations. Due to the various jurisdictions in which the Company files tax returns, it is possible that there could be other significant changes in the amount of unrecognized tax benefits in 2014, but the amount cannot be estimated.
	In the normal course of business, the Company is subject to examination by taxing authorities. The Company believes that it is no longer subject to U.S. federal and state income tax examinations for years prior to 2010. The Company has not been notified by any jurisdiction that it will be subject to examination.

Stockholders_equity

Stockholders' equity	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Stockholders' equity	'
	12. Stockholders’ equity
	The statements of changes in stockholders’ equity for the years ended December 31, 2013, 2012 and 2011, present the changes giving effect to the Company’s common stock issued in its underwritten public offering, stock compensation activity and Private Placement Warrant exercises, each of which is described below. In addition, as described in Note 3, “Reverse recapitalization of The W Group, private placement, reverse split and migratory merger” the statement of changes in stockholders equity in the year ended December 31, 2011, reflects the impact of the Private Placement in which the Company received gross proceeds of $18.0 million before transaction fees, costs and expenses in exchange for the issuance of shares of Company preferred stock as described below under Series A Convertible preferred stock.
	August 26, 2011 Reverse Split
	The aggregate value of the shares of common stock issued and outstanding was reduced by $10,000, with a corresponding increase to additional paid-in capital as of December 31, 2010 associated with the retroactive adjustment for the Reverse Split. The shares of Company common stock prior to the Reverse Split were 10,000,000 shares of common stock as of December 31, 2010, and upon the Reverse Split, such shares of Company common stock automatically converted into 312,500 shares of common stock. Shares held by the former stockholders of Format, Inc., the legal acquiror in the April 29, 2011, Reverse Recapitalization, were also retroactively adjusted from 770,083 common shares (without giving effect to the Reverse Split) to 24,093 common shares (giving effect to the Reverse Split). The shares issuable upon exercise by Roth of the Roth Warrant were 3,360,000 prior to the Reverse Split and were adjusted to 105,000 shares of common stock (giving effect to the Reverse Split). On August 26, 2011, the effective date of the Migratory Merger and Reverse Split, 113,961 shares of the Company preferred stock, representing all then-issued and outstanding shares of preferred stock, were automatically converted into 9,496,753 shares of Company common stock. Upon the consummation of the Migratory Merger and Reverse Split, each share of the Company’s preferred stock automatically converted into a number of shares of common stock equal to one-thousand dollars divided by $12.00 per share, the conversion price for the preferred stock giving effect to the adjustment resulting from the Reverse Split. Accordingly, preferred equity was eliminated and additional paid-in capital was increased by $9.7 million, while the aggregate value of the shares of common stock issued and outstanding was increased by $10,000.
	Common stock
	The Company has authorized 50,000,000 shares of common stock with a par value of $0.001 per share. At December 31, 2013, 11,352,812 shares of Company common stock were issued and 10,521,887 shares of Company’s common stock were outstanding. At December 31, 2012, 9,909,212 shares of Company common stock were issued and 9,078,278 shares of Company’s common stock were outstanding. Each holder of a share of the Company’s common stock is entitled to one vote per share held on each matter to be considered by holders of the Company’s common stock. Holders of the Company’s common stock are entitled to receive ratably such dividends, if any, as may be declared by the Company’s board of directors. The Company’s current policy is to retain earnings for operations and growth. Upon any liquidation, dissolution or winding-up of the Company, the holders of the Company’s common stock are entitled to share ratably in all assets available for distribution, after payment of, or provision for, all liabilities and the preferences of any then outstanding shares of Company preferred stock. The holders of the Company’s common stock have no preemptive, subscription, redemption or conversion rights.
	Underwritten public offering
	On July 16, 2013, the Company closed an underwritten public offering of 2,005,000 shares of its common stock at a price to the public of $35.00 per share. The Company sold 1,050,000 shares of its common stock, and certain selling stockholders, sold 955,000 shares of common stock in the offering. The proceeds to the Company, net of the underwriter’s fees and expenses, were $34,530,000 before deducting offering expenses of approximately $514,000 paid by the Company. The Company did not receive any proceeds from the sale of the shares by the selling stockholders.
	SAR exercise for shares of Company common stock
	On August 15, 2013, the Grantee exercised the SAR with respect to 181,291 shares of common stock, which was the then vested portion of the SAR. Upon such exercise, the Company initially issued 96,504 shares of the Company’s common stock. Under the terms of the plan, at the option of the Grantee, the Company then withheld 42,314 of the shares issued to satisfy his income tax obligations. The cash equivalent of the shares withheld was $2,063,000, representing the Grantee’s income tax withholding obligation that was remitted by the Company to the applicable taxing authorities. The payment of the income tax withholding obligation was recorded as a reduction in additional paid-in-capital during the year ended December 31, 2013.
	In connection with this exercise, the excess of the underlying value of the shares of common stock issued over the amount recognized as compensation expense in the Company’s financial statements is a cost that is deductible for income tax purposes by the Company. As such, the Company realized an income tax benefit of $1,642,000 for this incremental amount that was recorded as a reduction in the Company’s income tax liability and an increase in additional paid-in-capital during the year ended December 31, 2013.
	Series A Convertible preferred stock
	The Company has authorized 114,000 shares of Series A Convertible preferred stock with a par value of $0.001 per share. At December 31, 2013 and 2012, no shares of Series A Convertible preferred stock of the Company were issued or outstanding. Series A Convertible preferred stock was convertible into shares of the Company’s common stock at any time at the election of its holder, subject to limitations on conversion set forth in the certificate of designation and automatically converted into shares of the Company’s common stock on August 26, 2011, the effective date of the Migratory Merger and Reverse Split. The preferred stock conversion price was $12.00 per share giving effect to the Reverse Split and was subject to adjustment for non-cash dividends, distributions, stock splits or other subdivisions or reclassifications of Company common stock. The Series A Convertible preferred stock was also subject to full-ratchet anti-dilution protection whereby, upon the issuance (or deemed issuance) of shares of the Company’s common stock, subject to specified exceptions, the conversion price of the Company’s preferred stock would have been reduced to the effective price of its common stock so issued (or deemed to be issued). The Company preferred stock did not have a stated maturity date, and upon the occurrence of the liquidation, dissolution or winding up of the Company each holder of preferred stock would have been entitled to be paid before any distribution or payment was made upon the Company’s common stock. The Company preferred stock could only have been converted to shares of its common stock and was not redeemable for cash upon the occurrence of any other events. The Company preferred stock was not within the scope of ASC 480, Distinguishing Liabilities from Equity, as the preferred stock was not a mandatorily redeemable financial instrument; it did not embody an obligation to repurchase the Company’s equity shares by transferring assets; and it did not embody an unconditional obligation to issue a variable number of the Company’s equity shares. Accordingly, the Company’s preferred stock did not meet the conditions in paragraph 2 of ASC 480-10-S99-3A (as interpreted in paragraph 3f) that would require temporary equity classification. Therefore, the preferred stock was classified as permanent equity on the Company’s balance sheet.
	The allocation of the $18.0 million Private Placement proceeds to Company preferred stock and Private Placement Warrants is described below. The respective values of the preferred stock and Private Placement Warrants were separately estimated and applied to these respective securities for purposes of applying the appropriate accounting guidance to each security. The value assigned to the shares of preferred stock was computed on an “as-if” converted basis and derived through an estimation of the fair value of the Company’s common stock as of April 29, 2011, the date upon which the Reverse Recapitalization and Private Placement occurred, and represented the residual amount of the $18.0 million Private Placement proceeds after determining the value of the Private Placement Warrants as discussed further below under Private placement warrants. The Company estimated the fair value of its common stock using the “Backsolve Method,” as described in the current working draft of the AICPA Practice Aid. The Backsolve Method, a form of the market approach to valuation, derives the implied equity value for one type of equity security (e.g. common equity) from a contemporaneous transaction involving another type of equity security (e.g., preferred stock). In this case, the Company solved for the common equity value ($10.08 per share as adjusted for the Reverse Split) in an option pricing model such that the aggregate value of the securities issued in the Private Placement, considering both the Company’s preferred stock component and Private Placement Warrant’s component, equaled $18.0 million. That is, the sum of (i) $10.08 per common share, multiplied by 1,500,009 shares of the Company’s common stock issuable upon conversion of the shares of the Company’s preferred stock issued in the Private Placement (as adjusted for the Reverse Split, on an as-if converted basis) plus (ii) $3.85 per share multiplied by 750,002 shares of the Company’s common stock issuable upon exercise of the Private Placement Warrants (as adjusted for the Reverse Split) equals $18.0 million. Accordingly, the value assigned to the Company preferred stock was $15.1 million of the $18.0 million gross proceeds received in the Private Placement. After reflecting the costs associated with the Reverse Recapitalization and allocation of the transaction costs associated with the Private Placement, as described below under Transaction costs, the value of the Company’s preferred equity was $9.7 million immediately prior to its elimination upon the automatic conversion of the shares of the preferred stock to shares of Company common stock on August 26, 2011, the effective date of the Migratory Merger and Reverse Split.
	Immediately following the effectiveness of the Reverse Split, each issued and outstanding share of the Company’s preferred stock automatically converted into a number of shares of the Company’s common stock equal to $1,000 divided by $12.00, the per share conversion price for the preferred stock giving effect to the adjustment resulting from the Reverse Split. At issuance, no portion of the proceeds of the Company preferred stock was assigned to the conversion feature as a separate derivative instrument under ASC 815 because the economic characteristics and risks of the conversion option were clearly and closely related to those characteristics of the Company’s preferred stock as further discussed below.
	The accounting for the embedded conversion option of the Company’s preferred stock was determined by ASC 815, which required that an embedded derivative be separated from the host contract (i.e., the Company’s preferred stock in this case) and accounted for as a derivative instrument if all of the following criteria were met: (a) the economic characteristics and risks of the embedded derivative were not clearly and closely related to the economic characteristics and risks of the host contract; (b) the hybrid instrument (i.e., the Company preferred stock and its embedded conversion option) was not remeasured at fair value under otherwise applicable generally accepted accounting principles with changes in fair value reported in earnings as they occur; and (c) a separate instrument with the same terms as the embedded derivative would, pursuant to ASC 815, be a derivative instrument subject to the requirements of ASC 815.
	The host contract (i.e., the Company preferred stock), absent the conversion option, did not provide the holders with principal protection, and it encompassed a residual interest in the Company. Therefore, the host contract was more analogous to equity. The conversion option enabled the holders to convert the Company preferred stock into shares of Company common stock, subject to certain adjustments and limitations on conversion. Since the host contract was an equity host and the conversion option was to convert the preferred stock into Company common stock and both possessed principally equity characteristics related to the same entity, the economic characteristics and risks of the conversion option were clearly and closely related to those of the Company preferred stock host contract. Therefore, the requirements in paragraph ASC 815(a) were not met. Accordingly, the embedded conversion option was not required to be separately classified and accounted for apart from the Company preferred stock.
	Private placement warrants
	Each investor in the Private Placement as described in Note 3, “Reverse recapitalization of The W Group, private placement, reverse split and migratory merger,” received a number of Private Placement Warrants equal to one-half the number of shares of the Company’s common stock issuable upon conversion of the shares of the Company’s preferred stock purchased by such investor. At issuance, the Private Placement Warrants represented the right to purchase a total of 750,002 shares of the Company’s common stock at an exercise price of $13.00 per share, as adjusted for the Reverse Split, subject to further adjustment for non-cash dividends, distributions, stock splits or other reorganizations or reclassifications of the Company’s common stock. The Private Placement Warrants are also subject to full ratchet anti-dilution protection whereby, upon the issuance (or deemed issuance) of shares of the Company’s common stock at a price below the then-current exercise price of the Private Placement Warrants, subject to specified exceptions, the exercise price of the Private Placement Warrants will be reduced to the effective price of the Company’s common stock so issued (or deemed to be issued). The Private Placement Warrants will expire on April 29, 2016.
	At any time beginning six months after the closing of the Private Placement at which the Company is required to register the shares issuable upon exercise of the Private Placement Warrants pursuant to the registration rights agreement entered into in connection with the Private Placement, but such shares may not be freely sold to the public, the Private Placement Warrants may be “cashlessly” exercised by their holders. In such circumstances, the warrant holders may “cashlessly” exercise the Private Placement Warrants by causing the Company to withhold a number of shares of its common stock otherwise issuable upon such exercise having a value, based upon the market price of the Company’s common stock (such market price as defined in the purchase agreement for the Private Placement), equal to the aggregate exercise price associated with such exercise. In other words, in such circumstances, the exercise of the Private Placement Warrants will occur without any cash being paid by the holders of the Private Placement Warrants. Because the shares issuable upon exercise of the Private Placement Warrants are currently available for resale pursuant to effective registration statements filed by the Company with the SEC, the Private Placement Warrants may not be “cashlessly” exercised at this time. The Private Placement Warrants further include a requirement that, from and after the effective date of the Reverse Split, the Company will keep reserved out of the authorized and unissued shares of its common stock sufficient shares to provide for the exercise of the Private Placement Warrants.
	The Company’s Private Placement Warrants are accounted for as a liability, in accordance with ASC 480, Distinguishing Liabilities from Equity. ASC 480 states that, if an entity must or could settle an instrument by issuing a variable number of its own shares, and, as in this case, the obligation’s monetary value is based solely or predominantly on variations in the fair value of the company’s equity shares, but moves in the opposite direction, then the obligation to issue shares is to be recorded as a liability at the inception of the arrangement, and is adjusted with subsequent changes in the fair value of the underlying stock. The effect of the change in value of the obligation is reflected as “Private placement warrant expense” in the Company’s consolidated statements of operations.
	The Private Placement Warrants issued with the 18,000 shares of the Company’s preferred stock had an estimated fair value of $2,887,000 at the closing of the Reverse Recapitalization transaction and the Private Placement on April 29, 2011, determined based upon an agreed-upon exercise price of the Private Placement Warrants; the purchase price for (value of) the Company’s preferred stock and Private Placement Warrants, in the aggregate as agreed upon with the investors in the Private Placement; an assessment of an appropriate risk-free interest rate of 2.1%, an anticipated volatility factor of 50.0%, and a zero percent dividend yield, all incorporated into a valuation using the Black-Scholes option pricing model. The Company determined that the five-year Treasury Bond yield was a reasonable assumption for a risk-free rate, and that an appropriate volatility rate would represent the upper end of the range of implied volatility of publicly traded call options of benchmark companies, which reflects the mid-range of their historical volatility. The Company’s past history of not paying dividends and management’s intentions to continue such a dividend policy resulted in a zero dividend yield assumption. The five-year term of the Private Placement Warrants, the stated warrant exercise price of $13.00 per share (as adjusted for the Reverse Split), when the Private Placement Warrants became exercisable, and the Company’s common stock valuation of $10.08 per share (as adjusted for the Reverse Split), when the Private Placement Warrants became exercisable, comprise the balance of the inputs into the Black-Scholes pricing model for the warrant valuation.
	See Note 6, “Fair value of financial instruments,” for detail describing the valuation approach for the Private Placement Warrants as of December 31, 2013 and 2012.
	During the years ended December 31, 2013 and 2012, a portion of the Private Placement Warrants were exercised, resulting in the issuance of 339,410 and 13,750 shares of the Company’s common stock, respectively. There were no exercises of the Private Placement Warrants in the year ended December 31, 2011.
	As of December 31, 2013 and 2012, 396,842 shares and 736,252 shares of Company common stock, respectively, remained reserved for the exercise of the Private Placement Warrants, in accordance with the terms of the purchase agreement for the Private Placement.
	Roth warrant
	The Company issued to Roth, the Roth Warrant to purchase shares of the Company’s common stock, as compensation for its role as placement agent in connection with the Private Placement. Prior to its exercise in full on September 1, 2011, as described below, the Roth Warrant represented the right to purchase an aggregate of 105,000 shares of the Company’s common stock, at an exercise price of $13.20 per share, subject to further adjustment for non-cash dividends, distributions, stock splits, or other reorganizations or reclassifications of the Company’s common stock. The Roth Warrant was originally scheduled to expire on April 29, 2016. At any time following the effectiveness of the Reverse Split, the Roth Warrant could have been “cashlessly” exercised by its holder by causing the Company to withhold a number of shares of its common stock otherwise issuable upon such exercise having a value, based upon the market price of the Company’s common stock (such market price as defined in the Roth Warrant), equal to the aggregate exercise price associated with such exercise. In other words, in such circumstances, the exercise of the Roth Warrant would occur without any cash being paid by the holder of the warrant to the Company. The Roth Warrant included a requirement that the Company reserve a sufficient number of shares of its common stock solely for the purpose of effecting the exercise of the Roth Warrant into shares of the Company’s common stock pursuant to the terms (and subject to the limitations) thereof.
	The estimated fair value of the Roth Warrant of $0.4 million as of the consummation of the Private Placement on April 29, 2011 was determined using the same assumptions used to value the Private Placement Warrants described above, and by using the same inputs, but for its specific exercise price of $13.20 per share as adjusted for the Reverse Split. The Roth Warrant was classified as equity and was recorded as an adjustment between the Roth Warrant and the Company’s preferred stock equity. Unlike the Private Placement Warrants, the Roth Warrant did not contain, and was not otherwise subject to, any price-based anti-dilution provisions and could only be settled by the Company with a fixed number of shares of the Company’s common stock (subject to customary adjustments for non-cash dividends, distributions, stock splits or other reorganizations or reclassifications of the Company’s common stock). Under ASC 815, this lack of price-based anti-dilution provisions was the distinctive attribute as compared to the Private Placement Warrants that required the Roth Warrant to be classified as equity on the Company’s consolidated balance sheets. The valuation of the Company’s preferred stock, common stock and Private Placement Warrants employed the Black-Scholes option pricing model and incorporated the purchase price of the Company’s preferred stock and Private Placement Warrants, including the Roth Warrant, and the Company’s assessment relative to the interest rate, volatility factor, and other inputs utilized in the model. The Roth Warrant represented compensation to Roth for its services in its capacity as placement agent for the Private Placement, and the Roth Warrant’s $0.4 million estimated fair value ($3.80 per share of common stock issuable upon exercise of the Roth Warrant as adjusted for the Reverse Split) was recorded as a reduction of capital from the preferred stock issuance.
	In accordance with its terms, on September 1, 2011, Roth “cashlessly” exercised, in full, the Roth Warrant, receiving 62,116 shares of the Company’s common stock on a net basis, with 42,884 of the 105,000 warrant shares issuable upon exercise thereof withheld by the Company in lieu of payment by Roth to the Company of an amount in cash equal to the aggregate exercise price thereof, in accordance with the provisions of the Roth Warrant.
	Treasury stock
	The Company and Gary S. Winemaster, the Company’s Chief Executive Officer and President, and Chairman of the Board of Directors of the Company, entered into a Stock Purchase Agreement, pursuant to which, on October 31, 2011, the Company purchased from Mr. Winemaster 830,925 shares of Company common stock for $4.25 million, or $5.11 per share. These shares were returned to the Company’s treasury as authorized and issued, but not outstanding, shares of common stock of the Company.
	Transaction costs from reverse recapitalization and the private placement
	The transaction costs incurred in connection with the Reverse Recapitalization and the Private Placement consist of cash costs of approximately $5.7 million, and the issuance to Roth, as placement agent for the Private Placement, of the Roth Warrant (with an estimated fair value of approximately $0.4 million). The cash costs consisted of fees to the placement agent in the Private Placement, legal and accounting fees, consulting fees, fees for the repurchase of shares of Format stock from the former sole director and executive officer of Format and termination of his interest in and obligations owed by Format to him, and other expenses associated with the Reverse Recapitalization and Private Placement transactions. The cash transaction costs were required to be allocated between equity (approximately $4.9 million) for the costs allocated to the Company’s preferred stock, plus subsequent registration costs of the Company’s common stock, and operating results (approximately $0.8 million) for the costs allocated to the Private Placement Warrants.
	Included in the transaction costs above were costs for filing registration statements with the SEC covering the resale of shares of common stock issued upon conversion of shares of preferred stock and exercise of the Roth Warrant and issuable upon exercise of the Private Placement Warrants, which totaled approximately $0.6 million as of December 31, 2011, and were recorded as a reduction of additional paid-in capital, as the Company was obligated to register all such shares of the Company’s common stock pursuant to the terms of the purchase agreement for the Private Placement.
	Registration rights agreement
	In connection with the Private Placement, the Company entered into a Registration Rights Agreement (the “Private Placement Registration Rights Agreement”) with the investors in the Private Placement and Roth Capital Partners, LLC, pursuant to which it agreed to file a registration statement on Form S-1, with the SEC, covering the resale of “Registrable Securities” (as defined below) (which includes the shares of the Company’s common stock that were issuable upon conversion of shares of the Company’s preferred stock originally issued in the Private Placement and shares of the Company’s common stock issuable upon exercise of the Private Placement Warrants and shares of the Company’s common stock that were issuable upon exercise of the Roth Warrant), on or before the date which is 30 days after the closing date of the Private Placement, and to use its commercially reasonable efforts to have such registration statement declared effective by the SEC as soon as practicable. The Company further agreed, within 30 days after it becomes eligible to use a registration statement on Form S-3 to register the Registrable Securities for resale, to file a registration statement on Form S-3 covering the Registrable Securities. On June 27, 2013, within 30 days after the Company became eligible to use a registration statement on Form S-3, in accordance with the Private Placement Registration Rights Agreement, it filed a registration statement on Form S-3 (as a post-effective amendment to the registration statement on Form S-1) covering the Registrable Securities, which was declared effective on June 27, 2013.
	The Company is obligated to maintain the effectiveness of the registration statement until the earliest of (1) the first date on which all Registrable Securities covered by such registration statement have been sold, (2) the first date on which all Registrable Securities covered by such registration statement may be sold without restriction pursuant to Rule 144 or (3) the first date on which none of the securities included in the registration statement constitute Registrable Securities.
	Pursuant to the Private Placement Registration Rights Agreement, the holders of Registrable Securities are also entitled to certain piggyback registration rights if the Registrable Securities are not covered by one or more effective registration statements. As of December 31, 2013, and as of the time of the closing of the public offering on July 16, 2013, all of the Registrable Securities were covered by an effective registration statement. “Registrable Securities,” as contemplated by the Private Placement Registration Rights Agreement, means certain shares of the Company’s common stock, including those shares that were issuable upon conversion of shares of Company preferred stock issued in the Private Placement and shares of the Company’s common stock issuable upon exercise of the Private Placement Warrants and the shares of the Company’s common stock that were issued upon exercise of the Roth Warrant; provided, that, any such share shall cease to be a Registrable Security upon (A) sale pursuant to the registration statement or Rule 144 under the Securities Act, (B) such share becoming eligible for sale without restriction by the selling securityholder holding such security pursuant to Rule 144 under the Securities Act or (C) such share otherwise becoming eligible for sale without restriction pursuant to Section 4(1) of the Securities Act, provided that, any restrictive legend on any certificate or other instrument representing such shares has been removed or there has been delivered to the transfer agent for such shares irrevocable documentation (including any necessary legal opinion) to the effect that, upon submission by the applicable selling securityholder of the certificate or instrument representing such security, any such restrictive legend shall be removed.
	In addition, at any time beginning six months after the closing of the Private Placement at which the Company was required to register the shares issuable upon exercise of the Private Placement Warrants, but such shares may not be freely sold to the public, the warrants may be “cashlessly” exercised by the holders thereof. In such circumstances, the warrant holders may “cashlessly” exercise the Private Placement Warrants by causing the Company to withhold a number of shares of its common stock otherwise issuable upon such exercise having a value, based upon the market price (such market price as defined in the purchase agreement for the Private Placement) of the Company’s common stock, equal to the aggregate exercise price associated with such exercise. In other words, in such circumstances, the exercise of the Private Placement Warrants will occur without any cash being paid by the holders of the Private Placement Warrants to the Company. Because the shares issuable upon exercise of the Private Placement Warrants are currently available for resale pursuant to effective registration statements filed by the Company with the SEC, the Private Placement Warrants may not be “cashlessly” exercised as of December 31, 2013.
	In connection with the consummation of the Reverse Recapitalization, the Company also entered into a registration rights agreement with the former stockholders of The W Group, pursuant to which it agreed to provide to such persons certain piggyback registration rights with respect to shares of the Company’s capital stock, including shares issuable upon exercise, conversion or exchange of securities, held by such persons at any time on or after the closing of the Reverse Recapitalization. The piggyback registration rights under this registration rights agreement are subject to customary cutbacks and are junior to the piggyback registration rights granted to investors in the Private Placement and to Roth pursuant to the Private Placement Registration Rights Agreement.
	The Company had a commitment to file a registration statement on Form S-1 with the SEC as described above. If a registration statement was not filed with the SEC on or prior to the date which was 30 days after the closing date of the Private Placement, or if (1) a registration statement covering the Registrable Securities was not declared effective by the SEC prior to the earlier of (A) five business days after the SEC informed the Company that no review of such registration statement would be made or that the SEC had no further comments on such registration statement, or (B) the 120th day after the closing of the Private Placement, or (2) after a registration statement had been declared effective by the SEC, sales could not be made pursuant to such registration statement for any reason, but excluding any period for which the use of any prospectus included in a registration statement has been suspended if and so long as certain conditions exist (which period may not be for more than 20 consecutive days or for a total of more than 45 days in any 12-month period), then the Company would have been required to pay amounts representing liquidated damages to each of the investors. Specifically, in any such case the Company would have been required to pay each investor 1.5% of the aggregate amount invested by such investor for each 30-day period (or pro rata for any portion thereof) following the date by which such registration statement should have been filed with the SEC or been declared effective, or was unavailable, as applicable. Thus, liquidated damages to investors could have amounted to approximately $0.3 million every 30 days. The terms of the Private Placement Registration Rights Agreement did not specify a maximum potential amount of liquidated damages and settlement alternatives were not provided. As the payment of liquidated damages did not appear probable at inception of the Private Placement, and remained so as of the date that any subsequent financial statements were issued, the Company did not record any contingent liability as an allocation of the gross proceeds from the Private Placement, nor subsequently, as an expense in accordance with ASC 450-20, Loss Contingencies. A registration statement covering the Registrable Securities was declared effective on August 26, 2011 by the SEC, which resolved the contingency regarding the registration statement being declared effective.
	The Company had a commitment to file a registration statement on Form S-3 with the SEC as described above. If a registration statement on Form S-3 was not filed with the SEC within 30 days after the Company became eligible to use a registration statement on Form S-3, then the Company would have been required to pay amounts representing liquidated damages to each of the investors. Specifically, in any such case the Company would have been required to pay each investor 1.5% of the aggregate purchase price paid by such investor that was attributable to those Registrable Securities that remained unsold at that time each 30-day period (or pro rata for any portion thereof) following the date by which such registration statement should have been filed with the SEC. The terms of the Private Placement Registration Rights Agreement did not specify a maximum potential amount of liquidated damages and settlement alternatives were not provided. As the payment of liquidated damages did not appear probable at inception of the Private Placement, and remained so as of the date that any subsequent financial statements were issued, the Company did not record any contingent liability as an allocation of the gross proceeds from the Private Placement, nor subsequently, as an expense in accordance with ASC 450-20, Loss Contingencies. A registration statement on Form S-3 (as a post-effective amendment to the registration statement on Form S-1) covering the Registrable Securities was filed with the SEC on June 27, 2013, which resolved the contingency regarding the registration statement on Form S-3 being filed with the SEC.
	In addition, the Company filed a universal shelf registration statement, which was declared effective on February 14, 2014, pursuant to which the Company may offer, issue and sell, from time to time, in one or more offerings, common stock, preferred stock, debt securities, depositary shares, warrants, subscription rights, stock purchase contracts and units.

Commitments_and_contingencies

Commitments and contingencies	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and contingencies	'
	13. Commitments and contingencies
	The Private Placement Registration Rights Agreement provides, among other things, that if, after such registration statement has been declared effective by the SEC, sales cannot be made pursuant to such registration statement for any reason, but excluding any period for which the use of any prospectus included in a registration statement has been suspended if and so long as certain conditions exist (which period may not be for more than 20 consecutive days or for a total of more than 45 days in any 12-month period), then the Company is required to pay amounts representing liquidated damages to each of the investors, on the same basis as the liquidated damages the Company could have been required to pay in connection with the initial registration statement filed pursuant to the Private Placement Registration Rights Agreement. See also Note 12, “Stockholders Equity” for a discussion of a contingency related to the filing of a registration statement on Form S-3.
	The Company is involved in various legal proceedings from time to time arising in the normal course of doing business. The Company is required to record a provision for a liability when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated; however, based upon a review of information currently available to the Company regarding the potential impact of negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to the legal proceedings in which the Company is currently involved, the resolution of these legal proceedings, either individually or in the aggregate, is not expected to have a material effect on the Company’s consolidated results of operations, financial condition or cash flows.
	On December 7, 2012, the Company signed an agreement to enter into a joint venture with another entity for the purpose of manufacturing, assembling and selling certain engines into the Asian market. As of December 31, 2013, the production facility was completed and manufacturing has been scheduled to commence during 2014. In connection with this agreement, the Company has committed up to $1.2 million toward the joint venture. As of December 31, 2013, and absent any changes in facts and circumstances, the Company intends to account for this joint venture under the equity method as prescribed by ASC 323, Investments — Equity Method and Joint Ventures.

Related_party_transactions

Related party transactions	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Related party transactions	'
	14. Related party transactions
	Thomas Somodi, who previously served as the Company’s Chief Operating Officer and Chief Financial Officer, entered into with The W Group (i) a subscription agreement, dated as of April 16, 2005, as amended by the amendment to the subscription agreement, effective January 1, 2008, and (ii) an employment agreement dated as of April 16, 2005, as amended by the amendment to the employment agreement, effective January 1, 2008. Pursuant to the subscription agreement entered into with Mr. Somodi, Mr. Somodi acquired shares of The W Group which represented 10% of the issued and outstanding shares of common stock of The W Group as of the date of such agreement and immediately prior to the closing of the Reverse Recapitalization, and the subscription agreement provided that, upon any issuance or change in the structure of capital stock, The W Group would make an equitable adjustment to the shares held by Mr. Somodi so that Mr. Somodi would maintain an interest equal to 10% of the fully-diluted capital stock of The W Group. The subscription agreement further provided (i) Mr. Somodi with the right to require The W Group to purchase his shares, and (ii) The W Group with the right to require Mr. Somodi to sell his shares to The W Group, upon The W Group’s achievement of certain thresholds relating to the valuation of The W Group. Also, Mr. Somodi agreed to sell his shares, if requested by The W Group, to a third party in connection with the sale of The W Group.
	On April 28, 2011, Gary Winemaster, Chief Executive Officer, and Mr. Somodi entered into a purchase and sale agreement which was subsequently amended on October 31, 2011, as described below, whereby Mr. Winemaster agreed to purchase all of Mr. Somodi’s shares of preferred and common stock in The W Group, which shares converted into an aggregate of 830,925 shares of Company common stock upon the consummation of the Reverse Recapitalization, as adjusted for the Reverse Split as described in Note 3, “Reverse recapitalization of The W Group, private placement, reverse split and migratory merger.”
	On October 31, 2011, Mr. Winemaster and Mr. Somodi amended the purchase and sale agreement to provide that Mr. Winemaster would purchase the 830,925 shares of the Company’s common stock then held by Mr. Somodi at an initial closing upon delivery by Mr. Winemaster of $4.25 million, by delivery of a full-recourse promissory note therefore, and to modify the terms upon which Mr. Winemaster was required to transfer shares of the Company’s common stock to Mr. Somodi upon the Company’s achievement of certain common stock value thresholds set forth in the purchase and sale agreement as follows: (a) an aggregate of 112,530 shares of Company common stock within 90 days of such time as the value per share of the Company’s common stock was at least $22.2162; (b) an additional aggregate of 135,036 shares of Company common stock within 90 days of such time as the value per share of the Company’s common stock was at least $27.7717; and (c) an additional aggregate of 90,024 shares of the Company’s common stock within 90 days of such time as the value per share of the Company’s common stock was at least $33.3244. All share and per share numbers in the foregoing provisions were subject to adjustment for stock splits, stock dividends, stock combinations and similar events.
	Messrs. Winemaster and Somodi consummated the sale of the 830,925 shares of Company common stock from Mr. Somodi to Mr. Winemaster pursuant to the terms of the purchase and sale agreement, as amended, on October 31, 2011, and, thereafter on October 31, 2011, pursuant to the terms of a purchase agreement between the Company and Mr. Winemaster, the Company purchased the 830,925 shares of the Company’s common stock from Mr. Winemaster in exchange for delivery by the Company to Mr. Winemaster of $4.25 million, representing a price per share of $5.11. The promissory note delivered by Mr. Winemaster to Mr. Somodi in exchange for the shares at the closing of the transactions contemplated by the purchase and sale agreement, as amended, was paid in full by Mr. Winemaster on October 31, 2011. Promptly following the purchase of the shares by the Company from Mr. Winemaster pursuant to the terms of the purchase agreement, the shares were returned to the Company’s treasury as authorized and issued, but not outstanding, shares of Company common stock.
	Pursuant to the terms of the purchase and sale agreement, as amended, Mr. Winemaster had the right to elect to make a payment to Mr. Somodi equal to the product of the number of shares Mr. Winemaster would otherwise be required to deliver to Mr. Somodi upon achievement of a common stock value threshold, multiplied by the applicable threshold price. The first common stock value threshold was achieved on or about March 27, 2013, the second common stock value threshold was achieved on or about May 7, 2013, and the third common stock value threshold was achieved on or about May 28, 2013. On June 24, 2013, Mr. Somodi transferred to the Company his right to receive shares or a cash payment from Mr. Winemaster as a result of the achievement of the first common stock value threshold, in exchange for a cash payment by the Company to Mr. Somodi of $2.5 million. Mr. Winemaster contemporaneously paid the Company $2.5 million in full satisfaction of Mr. Winemaster’s obligations to the Company as a result of the achievement of the first common stock value threshold. On August 5, 2013, Mr. Somodi again transferred to the Company his right to receive shares or a cash payment from Mr. Winemaster as a result of the achievement of the second common stock value threshold, in exchange for a cash payment by the Company to Mr. Somodi of $3.75 million. Mr. Winemaster contemporaneously paid the Company $3.75 million in full satisfaction of Mr. Winemaster’s obligations to the Company as a result of the achievement of the second common stock value threshold. On August 26, 2013, Mr. Somodi transferred to the Company his right to receive shares or a cash payment from Mr. Winemaster as a result of the achievement of the third common stock value threshold, in exchange for a cash payment by the Company to Mr. Somodi of $3.0 million. Mr. Winemaster contemporaneously paid the Company $3.0 million in full satisfaction of Mr. Winemaster’s obligations to the Company as a result of the achievement of the third common stock value threshold. These transactions were all approved by the Audit Committee prior to being entered into and consummated.
	During the years ended December 31, 2013, 2012 and 2011, the Company incurred fees for tax return and other consulting services with a professional services firm that is affiliated with a stockholder and member of the board of directors. Fees incurred during 2013, 2012 and 2011, were $127,000, $125,000 and $156,000, respectively.

Description_of_the_company_and1

Description of the company and summary of significant accounting policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Basis of presentation	'
	Basis of presentation
	The consolidated financial statements of Power Solutions International, Inc. present information in accordance with generally accepted accounting principles in the U.S. (“GAAP”), have been prepared pursuant to the rules and regulations of the SEC and, in the opinion of management present fairly the consolidated financial position, results of operations and cash flows of the Company and its wholly-owned subsidiaries for the periods presented, including retroactive restatement to reflect the 1-for-32 Reverse Split approved by the stockholders in their vote on the Migratory Merger and Reverse Split which were effective August 26, 2011 (and described below in Note 3, “Reverse recapitalization of The W Group, private placement, reverse split and migratory merger”), as required in accordance with SEC Staff Accounting Bulletin (SAB) Topic 4C Equity Accounts — Change in Capital Structure, and Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 260, Earnings Per Share. The consummation of the Migratory Merger and Reverse Split, effective on August 26, 2011, also triggered the automatic conversion of the shares of the Company’s preferred stock to the Company’s common stock. In accordance with ASC 260, the conversion of the Company’s preferred stock is presented prospectively from August 26, 2011, in the Company’s results as of and for the year ended December 31, 2011, resulting in a $9.7 million increase in additional paid in capital and elimination of the Series A Convertible Preferred Stock in the Company’s consolidated balance sheet as of December 31, 2011, detailed in Note 12, “Stockholders’ equity.” Earnings per share is calculated based upon the weighted average shares which reflect the conversion of the preferred shares to shares of the Company’s common stock effective August 26, 2011, as restated for the Reverse Split.
Principles of consolidation	'
	Principles of consolidation
	The consolidated financial statements include the accounts of Power Solutions International, Inc., and its direct and indirect wholly-owned subsidiaries, The W Group, Inc., Power Production, Inc., Power Great Lakes, Inc., Power Solutions, Inc., Power Global Solutions, Inc., Auto Manufacturing, Inc., Torque Power Source Parts, Inc., XISync, LLC, PSI International, LLC, and Power Properties, L.L.C. Collectively, these entities produce and distribute off-highway industrial engines and provide aftermarket support for the industrial engine market. All significant intercompany balances and transactions have been eliminated in consolidation.
Use of estimates	'
	Use of estimates
	The preparation of consolidated financial statements in conformity with GAAP requires that management make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could materially differ from those estimates.
Revenue recognition	'
	Revenue recognition
	The Company recognizes revenue upon transfer of title and risk of loss to the customer, which is typically when products are shipped, provided there is persuasive evidence of an arrangement, the sales price is fixed or determinable and management believes collectability is reasonably assured.
	The Company classifies shipping and handling charges billed to customers as revenue. Shipping and handling costs paid to others are classified as a component of cost of sales when incurred.
Inventories, net	'
	Inventories, net
	Inventories consist primarily of engines and parts. Engines are valued at the lower of cost, plus estimated freight-in, as determined by specific serial number identification, or market value. Parts are valued at the lower of cost (first-in, first-out) or market value. When necessary, the Company writes down inventory for an estimated amount equal to the difference between the cost of the inventory and the estimated realizable value. Additionally, an inventory reserve is provided for based upon the Company’s estimation of future demand for the quantity of inventory on hand. In determining an estimate of future demand, multiple factors are taken into consideration, including (i) customer purchase orders and customer forecasted demand; (ii) historical sales/usage for each inventory item; and (iii) utilization within a current or anticipated future power system.
	Inventories consisted of the following as of December 31:
		2013			2012
	Raw materials	$	53,538		$	36,006
	Finished goods		2,448			3,962
	Total	$	55,986		$	39,968
Accounts receivable and allowance for doubtful accounts	'
	Accounts receivable and allowance for doubtful accounts
	Accounts receivable are due under normal trade terms generally requiring payment within 30 to 45 days from the invoice date. A limited number of customers have terms which may extend up to 150 days from the invoice date. The carrying amount of accounts receivable is reduced by a valuation allowance that reflects management’s best estimate of the amounts that will not be collected. Management specifically reviews all past due accounts receivable balances and, based on historical experience and an assessment of current creditworthiness, estimates the portion, if any, of the balance that will not be collected.
	The activity in the Company’s allowance for doubtful accounts as of December 31, was as follows:
		2013			2012
	Balance at beginning of year	$	70		$	140
	(Reduction of) charged to expense		(15	)		(72	)
	(Write-offs), net of recoveries		25			2
	Balance at end of year	$	80		$	70
Cash overdrafts	'
	Cash overdrafts
	Prior to the March 20, 2012 amendment of the Company’s prior loan and security agreement with BMO Harris Bank, N.A. (“BMO Bank”), cash received was automatically swept and applied against the Company’s revolving line of credit. Accordingly, the Company did not maintain cash on its consolidated balance sheet, but instead funded its operations through borrowings under its revolving line of credit. Under this cash management system, cash overdraft balances existed for the Company’s primary disbursement accounts and such cash overdraft balances were classified within accounts payable on the Company’s consolidated balance sheet and changes in the cash overdraft balances were presented as financing activities on the Company’s consolidated statement of cash flows. These overdrafts represented uncleared checks in excess of cash balances in the related bank accounts. As a result of the amendment and as provided in the Company’s current loan and security agreement with Wells Fargo Bank, National Association, cash balances are no longer automatically applied against the revolving line of credit, and as a result, the Company carries cash balances on its consolidated balance sheet from time to time.
	Under ASC 470-10-45, Debt, the elimination of the automatic sweeping of the Company’s cash and application of such cash against the revolving line of credit resulted in a change in the presentation of the revolving line of credit from a current liability to a long-term obligation on the Company’s consolidated balance sheet. Accordingly, the Company presented the revolving line of credit as a long-term obligation on its consolidated balance sheet subsequent to March 20, 2012.
Warranty costs	'
	Warranty costs
	The Company offers a standard limited warranty on the workmanship of its products that in most cases covers defects for a defined period. Warranties for certified emission products are mandated by the Environmental Protection Agency (“EPA”) and/or the California Air Resources Board (“CARB”) and are longer than the Company’s standard warranty on certain emission related products. The Company’s products also carry limited warranties from suppliers. Costs related to supplier warranty claims are borne by the supplier; the Company’s warranties apply only to the modifications made to supplier base products. The Company’s management estimates and records a liability, and related charge to income, for the warranty program at the time products are sold to customers. Estimates are based on historical experience and reflect management’s best estimates of expected costs at the time products are sold. The Company makes adjustments to estimates in the period in which it is determined that actual costs may differ from initial or previous estimates.
	The activity in the Company’s warranty accrual as of December 31 was as follows:
		2013			2012
	Balance at beginning of year	$	690		$	803
	Charged to expense		1,195			148
	Payments		(611	)		(261	)
	Balance at end of year	$	1,274		$	690
Private placement warrants	'
	Private placement warrants
	The Company’s private placement warrants are accounted for as a liability, in accordance with ASC 480-10-25-14, Distinguishing Liabilities from Equity. ASC 480-10-25-14 states that, if an entity must or could settle an instrument by issuing a variable number of its own shares, and, as in this case, the obligation’s monetary value is based solely or predominantly on variations in the fair value of the company’s equity shares, but moves in the opposite direction, then the obligation to issue shares is to be recorded as a liability at the inception of the arrangement, and is adjusted with subsequent changes in the fair value of the underlying stock. The effect of the change in value of the obligation is reflected as “Private placement warrant expense” in the Company’s consolidated statements of operations. See Note 6, “Fair value of financial instruments,” for detail describing the valuation approach for the Private Placement Warrants.
Long-lived assets	'
	Long-lived assets
	Long-lived assets, such as property, plant and equipment and land, are evaluated for impairment whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable. If such review indicates that the carrying amount of long-lived assets is not recoverable, the carrying amount of such assets is reduced to fair value. There were no adjustments to the carrying values of long-lived assets during the years ended December 31, 2013 and 2012.
Research & development and engineering costs	'
	Research & development and engineering costs
	The Company expenses research & development and engineering costs when incurred. Research & development costs classified within research & development and engineering expenses in the consolidated statements of operations, consist primarily of wages and materials related to engineering work and approximated $9.4 million, $6.8 million and $4.0 million for the years ended December 31, 2013, 2012, and 2011, respectively.
Share-based compensation	'
	Share-based compensation
	The Company accounts for share-based compensation expense for awards granted to employees for service over the service period based on the grant date fair value.
Fair value of financial instruments	'
	Fair value of financial instruments
	The Company’s financial instruments include accounts receivable, accounts payable, revolving line of credit, notes payable and private placement warrants. The carrying amounts of accounts receivable and accounts payable approximate fair value because of their short-term nature. The carrying value of the revolving line of credit approximates fair value because the interest rates fluctuate with market interest rates or the fixed rates are based on current rates offered to the Company for debt with similar terms and maturities. Based upon the Company’s current credit agreement with Wells Fargo Bank, National Association, using the Company’s balances and interest rates as of December 31, 2013, and holding other variables constant, a 10% increase in the interest rates for the next 12 month period charged by the bank to the Company would have decreased the Company’s pre-tax earnings and cash flow by less than $100,000. The fair value of the private placement warrants is described below in Note 6, “Fair value of financial instruments.”
Self-funded insurance	'
	Self-funded insurance
	The Company is self-insured for certain costs of its employee health insurance plan, although the Company obtains third-party insurance coverage to limit its exposure. The Company maintains a stop-loss insurance policy with individual and aggregate stop-loss coverage.
Income taxes	'
	Income taxes
	The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.
	The Company records net deferred tax assets to the extent it believes these assets will more likely than not be realized. In making such a determination, the Company considers all available positive and negative evidence, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. As of December 31, 2013 and 2012, the Company had not recorded a deferred tax asset valuation allowance.
	The Company records uncertain tax positions in accordance with ASC 740, Income Taxes , on the basis of a two-step process whereby (1) it determines whether it is more likely than not that the tax positions will be sustained based on the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold, the Company recognizes the largest amount of tax benefit that is greater than 50 percent likely to be realized upon ultimate settlement with the related tax authority. As of December 31, 2013, the Company had an unrecognized tax benefit of $570,000 for uncertain tax positions including interest and penalties. As of December 31, 2012, the Company had not recorded any unrecognized tax benefit for uncertain tax positions. The Company recognizes interest and penalties related to unrecognized tax benefits in income tax expense.
Concentrations	'
	Concentrations
	The Company generally maintains cash balances in various accounts at one financial institution in the Midwest. During 2013 and as of December 31, 2013, the Company maintained cash in non-interest bearing accounts at two financial institutions while transitioning its accounts from one financial institution to another financial institution. At December 31, 2013, cash accounts are insured by the Federal Deposit Insurance Corporation (FDIC) up to $250,000 per institution and per depositor. The Company’s cash balances exceeded the FDIC maximum insured amounts. At December 31, 2012, the Company had no uninsured cash balances.
	The Company is exposed to potential credit risks associated with its accounts receivable. The Company performs ongoing credit evaluations of its customers and generally does not require collateral on its accounts receivable. For certain non-U.S. trade receivables, the Company obtains trade credit insurance or requires letters of credit for those non-U.S. accounts for which trade credit insurance is not available or is insufficient. The Company has not experienced significant credit-related losses to date.
	One customer (“Customer A”) individually accounted for more than 10% of the Company’s sales during one or more years from 2011 through 2013 and represented 16%, 16% and 15% of consolidated net sales in 2013, 2012, and 2011, respectively.
	Three customers (“Customer A” referred to above, and “Customer B” and “Customer C”) individually accounted for more than 10% of consolidated accounts receivable at December 31, 2013 and 2012. At December 31, 2013 and 2012, Customer A represented 11% and 15% of consolidated accounts receivable, respectively. At December 31, 2013 and 2012, Customer B represented 18% of consolidated accounts receivable. At December 31, 2013 and 2012, Customer C represented 13% and 11% of consolidated accounts receivable, respectively.
	Three vendors (“Vendor A,” “Vendor B” and “Vendor C”) individually accounted for more than 10% of the Company’s purchases during one or more years from 2011 through 2013. Vendor A accounted for 30%, 30% and 37% of the Company’s purchases in 2013, 2012 and 2011, respectively. Vendor B accounted for 16% of the Company’s purchases in 2012, and less than 10% of the Company’s purchases in 2013 and 2011. Vendor C accounted for 15% of the Company’s purchases in 2013, and less than 10% of the Company’s purchases in 2012 and 2011.
Business Combinations	'
	In accordance with ASC 805, Business Combinations, The W Group was considered the accounting acquiror for accounting purposes, and accounted for the transaction as a reverse recapitalization
Earnings Per Share	'
	The Company computes earnings (loss) per share by applying the guidance stated in ASC 260, Earnings per Share, to determine the net income (loss) available per share of its common stock.
Distinguishing Liabilities from Equity	'
	The Company analyzes financial instruments with features of both liabilities and equity under ASC 480, Distinguishing Liabilities from Equity
Derivatives and Hedging	'
	The Company analyzes financial instruments with features of both liabilities and equity under ASC 480, Distinguishing Liabilities from Equity and ASC 815, Derivatives and Hedging.

Description_of_the_company_and2

Description of the company and summary of significant accounting policies (Tables)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Components of Inventories	'
	Inventories consisted of the following as of December 31:
		2013			2012
	Raw materials	$	53,538		$	36,006
	Finished goods		2,448			3,962
	Total	$	55,986		$	39,968
Activity in Company's Allowance for Doubtful Accounts	'
	The activity in the Company’s allowance for doubtful accounts as of December 31, was as follows:
		2013			2012
	Balance at beginning of year	$	70		$	140
	(Reduction of) charged to expense		(15	)		(72	)
	(Write-offs), net of recoveries		25			2
	Balance at end of year	$	80		$	70
Schedule of Company's Warranty Accrual	'
	The activity in the Company’s warranty accrual as of December 31 was as follows:
		2013			2012
	Balance at beginning of year	$	690		$	803
	Charged to expense		1,195			148
	Payments		(611	)		(261	)
	Balance at end of year	$	1,274		$	690

Property_plant_and_equipment_n1

Property, plant and equipment, net (Tables)	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Components of Property, Plant and Equipment	'
	The components of property, plant and equipment as of December 31, were as follows:
		2013			2012
	Land	$	260		$	260
	Building and improvements		4,125			3,882
	Office furniture and equipment		2,723			2,172
	Tooling and equipment		7,595			5,505
	Transportation equipment		203			223
	Construction in progress		4,844			594
	Property, plant and equipment, at cost		19,750			12,636
	Accumulated depreciation		(6,646	)		(5,491	)
	Property, plant and equipment, net	$	13,104		$	7,145
Estimated Useful Lives by Major Asset Category	'
	Estimated useful lives by major asset category are as follows:
		Life (in years)
	Buildings and improvements	39 Lesser of (i) 39 years, (ii) expected useful life of improvement or (ii) life of lease (including likely extension thereof)
	Tooling and equipment	Up to 10 years
	Office furniture and equipment	5 – 10
	Transportation equipment	3 – 5

Fair_value_of_financial_instru1

Fair value of financial instruments (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Estimated Fair Value of Private Placement Warrants Publicly Traded Stock Pricing Approach	'
	As of December 31, 2013 and 2012, the Company estimated the fair value of its Private Placement Warrants with a publicly traded stock pricing approach using the Black-Scholes option pricing model. The inputs of the Black-Scholes option pricing model as of December 31, were as follows:
		2013			2012
	Market value of the Company’s common stock	$	75.1		$	16.18
	Exercise price	$	13		$	13
	Risk-free interest rate		0.51	%		0.42	%
	Estimated price volatility		42.5	%		45	%
	Marketability discount		—			15	%
	Contractual term		2.33 years			3.33 years
	Dividend yield		—			—
Financial Liability Measured at Fair Value on Recurring Basis	'
	The following table summarizes fair value measurements by level as of December 31, 2013, for the Company’s level 3 financial liability measured at fair value on a recurring basis:
		Level 1		Level 2	Level 3
	Private placement warrants liability				$	24,525
	The following table summarizes fair value measurements by level as of December 31, 2012, for the Company’s level 3 financial liability measured at fair value on a recurring basis:
		Level 1		Level 2	Level 3
	Private placement warrants liability				$	3,666
Summary of Change in Estimated Fair Value of Company's Level 3 Financial Instrument	'
	The following table summarizes the change in the estimated fair value of the Company’s Level 3 financial instrument as of December 31:
		2013			2012
	Balance at beginning of year	$	3,666		$	3,270
	Fair value of private placement warrants exercised		(7,172	)		(52	)
	Increase in the value of private placement warrants		28,031			448
	Balance at end of year	$	24,525		$	3,666

Leases_Tables

Leases (Tables)	12 Months Ended
	Dec. 31, 2013
Leases [Abstract]	'
Future Minimum Lease Payments Due Under Operating Leases	'
	The future minimum lease payments due under operating leases as of December 31, 2013, were as follows:
	2014	$	2,556
	2015		2,529
	2016		2,352
	2017		1,916
	2018		1,010
		$	10,363

Income_taxes_Tables

Income taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Summary of Expense (Benefit) for Income Tax	'
	The expense (benefit) for income taxes for the years ended December 31, was as follows:
		2013			2012			2011
	Current tax expense
	Federal	$	2,629		$	3,806		$	2,816
	State		955			1,053			827
			3,584			4,859			3,643
	Deferred tax expense (benefit)
	Federal		967			(542	)		(809	)
	State		208			(174	)		(61	)
			1,175			(716	)		(870	)
	Total tax expense	$	4,759		$	4,143		$	2,773
Summary of Company's Effective Tax Rate on Income From Continuing Operations and Statutory Tax Rate	'
	A reconciliation between the Company’s effective tax rate on income from continuing operations and the statutory tax rate for the years ended December 31, was as follows:
		2013						2012						2011
		Amount			Percent			Amount			Percent			Amount			Percent
	Income tax (benefit) expense at federal statutory rate	$	(4,760	)		34	%	$	3,687			34	%	$	2,324			34	%
	State income tax, net of federal benefit		848			(6.1	)		581			5.4			506			7.4
	Non-deductible transaction expenses		—			—			—			—			259			3.8
	Non-deductible private placement warrant expense		9,531			(68.0	)		152			1.4			130			1.9
	Domestic production activity		(376	)		2.7			(221	)		(2.0	)		(216	)		(3.1	)
	Research tax credits		(1,054	)		7.5			(44	)		(0.4	)		(240	)		(3.5	)
	Tax reserve reassessment		570			(4.1	)		—			—			—			—
	Other, net		—			—			(12	)		(0.2	)		10			0.1
	Income tax expense	$	4,759			(34.0	)%	$	4,143			38.2	%	$	2,773			40.6	%
Summary of Components of Net Deferred Tax Asset or Liability	'
	Components of the deferred income tax assets and liabilities consisted of the following as of December 31:
		2013			2012
	Deferred tax assets
	Inventory	$	1,630		$	862
	Allowances and bad debts		196			184
	Accrued warranty		496			276
	Accrued wages and benefits		359			331
	Stock compensation		490			192
	Deferred revenue		—			512
	Other		302			54
	Total deferred tax assets		3,473			2,411
	Deferred tax liabilities
	Tax depreciation in excess of book		(966	)		(371	)
	Total deferred tax liabilities		(966	)		(371	)
	Net deferred tax assets	$	2,507		$	2,040
Schedule of Net Deferred Tax Assets and Liabilities	'
	The Company’s net deferred tax assets and liabilities are presented as follows in the Company’s consolidated balance sheets as of December 31:
		2013			2012
	Current deferred tax assets, net	$	2,811		$	2,176
	Non-current deferred tax liabilities, net		(304	)		(136	)
	Net deferred tax assets	$	2,507		$	2,040
Schedule of Change in Unrecognized Tax Benefits	'
	The change in unrecognized tax benefits for the year ended December 31, 2013 was follows:
	Balance at December 31, 2012	$	—
	Gross increases — current period tax positions		555
	Balance at December 31, 2013	$	555

Recovered_Sheet1

Description of the Company and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Aug. 26, 2011
Description Of Business And Significant Accounting Policies [Line Items]	'	'	'	'
Increase in additional paid in capital	$57,308,000	$10,862,000	'	$9,700,000
Research & development and engineering expenses	9,400,000	6,800,000	4,000,000	'
Decrease in pre-tax earnings and cash flow	100,000	'	'	'
Tax asset valuation allowance	0	0	'	'
Unrecognized tax benefit for uncertain tax positions, including interest and penalties	570,000	0	'	'
Interest-bearing accounts insured	250,000	'	'	'
Uninsured cash balances	'	$0	'	'
Vendor A [Member]	'	'	'	'
Description Of Business And Significant Accounting Policies [Line Items]	'	'	'	'
Purchases accounted	30.00%	30.00%	37.00%	'
Vendor B [Member]	'	'	'	'
Description Of Business And Significant Accounting Policies [Line Items]	'	'	'	'
Purchases accounted	10.00%	16.00%	10.00%	'
Vendor C [Member]	'	'	'	'
Description Of Business And Significant Accounting Policies [Line Items]	'	'	'	'
Purchases accounted	15.00%	10.00%	10.00%	'
Significant Customers [Member]	'	'	'	'
Description Of Business And Significant Accounting Policies [Line Items]	'	'	'	'
Invoice date	'150 days	'	'	'
Customer A [Member]	'	'	'	'
Description Of Business And Significant Accounting Policies [Line Items]	'	'	'	'
Consolidated accounts receivable	11.00%	15.00%	'	'
Customer B [Member]	'	'	'	'
Description Of Business And Significant Accounting Policies [Line Items]	'	'	'	'
Consolidated accounts receivable	18.00%	18.00%	'	'
Customer C [Member]	'	'	'	'
Description Of Business And Significant Accounting Policies [Line Items]	'	'	'	'
Consolidated accounts receivable	13.00%	11.00%	'	'
Consolidated net sales [Member] | Customer A [Member]	'	'	'	'
Description Of Business And Significant Accounting Policies [Line Items]	'	'	'	'
Consolidated net sales, percentage	16.00%	16.00%	15.00%	'
Minimum [Member]	'	'	'	'
Description Of Business And Significant Accounting Policies [Line Items]	'	'	'	'
Invoice date	'30 days	'	'	'
Consolidated accounts receivable	10.00%	10.00%	'	'
Maximum [Member]	'	'	'	'
Description Of Business And Significant Accounting Policies [Line Items]	'	'	'	'
Invoice date	'45 days	'	'	'
Business Segments [Member]	'	'	'	'
Description Of Business And Significant Accounting Policies [Line Items]	'	'	'	'
Number of Operating Segments	1	'	'	'
Wells Fargo Bank, National Association [Member]	'	'	'	'
Description Of Business And Significant Accounting Policies [Line Items]	'	'	'	'
Interest rates on debt	10.00%	'	'	'

Recovered_Sheet2

Description of the Company and Summary of Significant Accounting Policies - Components of Inventories (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Inventory Net [Abstract]	'	'
Raw materials	$53,538	$36,006
Finished goods	2,448	3,962
Total	$55,986	$39,968

Recovered_Sheet3

Description of the Company and Summary of Significant Accounting Policies - Activity in Company's Allowance for Doubtful Accounts (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]	'	'
Balance at beginning of year	$70	$140
(Reduction of) charged to expense	-15	-72
(Write-offs), net of recoveries	25	2
Balance at end of year	$80	$70

Description_of_the_Company_and3

Description of the Company and Summary of Significant Accounting Policies - Schedule of Company's Warranty Accrual (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Product Warranty Liability [Abstract]	'	'
Balance at beginning of year	$690	$803
Charged to expense	1,195	148
Payments	-611	-261
Balance at end of year	$1,274	$690

Recovered_Sheet4

Reverse Recapitalization of the W Group, Private Placement, Reverse Split and Migratory Merger - Additional Information (Detail) (USD $)	1 Months Ended
	Apr. 29, 2011	Dec. 31, 2013	Dec. 31, 2012	Aug. 26, 2011
Business Acquisition [Line Items]	'	'	'	'
Common stock shares, outstanding	10,000,000	10,521,887	9,078,287	'
Series A Convertible Preferred Stock, shares issued	'	0	0	'
Assets prior to reverse acquisition transaction, net book value	$5,000	'	'	'
Aggregate sale of shares	18,000	'	'	'
Amount of common stock that Preferred stock issued could be converted to	48,000,007	'	'	'
Proceeds before transaction fees	18,000,000	'	'	'
Costs and expenses	5,100,000	'	'	'
Shares issuable upon exercise	3,360,000	'	'	'
Reverse stock split ratio	'	'	'	32
Conversion of preferred stock into common stock, value	'	'	'	$1,000
Reverse acquisition transaction [Member]	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'
Series A Convertible Preferred Stock, shares issued	95,960.90	'	'	'
Number of stockholders	3	'	'	'
Pre-split shares of Common Stock issuable upon exercise of the private placement warrant	24,000,007	'	'	'

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail) (USD $)	0 Months Ended	1 Months Ended	12 Months Ended
	Aug. 26, 2011	Aug. 26, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 01, 2011
Class of Warrant or Right [Line Items]	'	'	'	'	'	'
Conversion price for the preferred stock	$12	$12	$12	'	'	'
Exercise price per share	'	'	'	$13	$13	'
Strike price of dilutive common shares for SAR	'	'	'	$22.07	'	'
Average closing market price of common stock excluded from diluted earning per share	'	'	'	$15.51	'	'
Estimated fair value per share of common stock	'	'	'	'	$9.55	'
Shares of common stock issuable upon exercise of the Roth Warrant	'	'	'	'	'	105,000
Private Placement Warrants [Member]	'	'	'	'	'	'
Class of Warrant or Right [Line Items]	'	'	'	'	'	'
Shares issued for warrants exercised	'	'	339,410	13,750	'	'
Roth Warrant [Member]	'	'	'	'	'	'
Class of Warrant or Right [Line Items]	'	'	'	'	'	'
Shares of common stock issuable upon exercise of the Roth Warrant	'	'	'	'	'	62,116

Recovered_Sheet5

Property, Plant and Equipment, Net - Components of Property, Plant and Equipment (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Property Plant And Equipment [Abstract]	'	'
Land	$260	$260
Building and improvements	4,125	3,882
Office furniture and equipment	2,723	2,172
Tooling and equipment	7,595	5,505
Transportation equipment	203	223
Construction in progress	4,844	594
Property, plant and equipment, at cost	19,750	12,636
Accumulated depreciation	-6,646	-5,491
Property, plant and equipment, net	$13,104	$7,145

Recovered_Sheet6

Property, Plant and Equipment, Net - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property Plant And Equipment Useful Life And Values [Abstract]	'	'	'
Depreciation expense	$1,528,000	$1,074,000	$785,000

Property_Plant_and_Equipment_N2

Property, Plant and Equipment, Net - Estimated Useful Lives by Major Asset Category (Detail)	12 Months Ended
	Dec. 31, 2013
Buildings and improvements [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, plant and equipment, useful life, description	'39 Lesser of (i) 39 years, (ii) expected useful life of improvement or (ii) life of lease (including likely extension thereof)
Property, plant and equipment, useful life	'39 years
Tooling and equipment [Member] | Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, plant and equipment, useful life	'10 years
Office furniture and equipment [Member] | Minimum [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, plant and equipment, useful life	'5 years
Office furniture and equipment [Member] | Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, plant and equipment, useful life	'10 years
Transportation equipment [Member] | Minimum [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, plant and equipment, useful life	'3 years
Transportation equipment [Member] | Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Property, plant and equipment, useful life	'5 years

Recovered_Sheet7

Fair Value of Financial Instruments - Estimated Fair Value of Private Placement Warrants Publicly Traded Stock Pricing Approach (Detail) (USD $)	0 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended
	Jun. 06, 2012	Dec. 31, 2013	Apr. 29, 2011	Dec. 31, 2013	Dec. 31, 2012
			Private Placement [Member]	Private Placement [Member]	Private Placement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'	'
Market value of the Company's common stock	'	'	'	$75.10	$16.18
Exercise price	'	'	'	13	13
Risk-free interest rate	0.92%	'	'	0.51%	0.42%
Estimated price volatility	55.00%	'	50.00%	42.50%	45.00%
Marketability discount	'	'	'	'	15.00%
Contractual term	'	'	'	'2 years 3 months 29 days	'3 years 3 months 29 days
Dividend yield	'	0.00%	0.00%	'	'

Recovered_Sheet8

Fair Value of Financial Instruments - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Discounted valuation of warrant	0.00%	15.00%	'
Private Placement Warrants [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Estimated fair value	$28,031,000	$448,000	$382,000
Private Placement Warrants [Member] | Black-Scholes [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Warrant sensitivity percentage	10.00%	'	'
Estimated fair value	$2,500,000	'	'

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments - Financial Liability Measured at Fair Value on Recurring Basis (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Private placement warrants liability	'	'
Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Private placement warrants liability	'	'
Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Private placement warrants liability	$24,525	$3,666

Fair_Value_of_Financial_Instru3

Fair Value of Financial Instruments - Summary of Change in Estimated Fair Value of Company's Level 3 Financial Instrument (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Increase in the value of private placement warrants	$28,031	$448	$382
Level 3 [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Balance ending	24,525	3,666	'
Level 3 [Member] | Private Placement [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Balance beginning	3,666	3,270	'
Fair value of private placement warrants exercised	-7,172	-52	'
Increase in the value of private placement warrants	28,031	448	'
Balance ending	$24,525	$3,666	'

Revolving_Line_of_Credit_Addit

Revolving Line of Credit - Additional Information (Detail) (USD $)

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

1 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Nov. 08, 2012

Mar. 20, 2012

Dec. 31, 2013

Dec. 31, 2013

Mar. 20, 2012

Dec. 31, 2013

Jun. 28, 2013

Mar. 20, 2012

Dec. 31, 2013

Jun. 28, 2013

Mar. 20, 2012

Mar. 20, 2012

Nov. 08, 2012

Mar. 20, 2012

Dec. 31, 2013

Nov. 08, 2012

Nov. 08, 2012

Wells Fargo Bank, National Association [Member]

BMO Harris Bank [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

BMO Harris Bank N A prime rate [Member]

BMO Harris Bank N A prime rate [Member]

Pre Amended Plan [Member]

Pre Amended Plan [Member]

Amended Plan [Member]

Amended Plan [Member]

Amended Plan [Member]

Wells Fargo Bank, National Association [Member]

Wells Fargo Bank, National Association [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Line of Credit Facility [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Agreement provides for borrowings under a revolving line of credit

'

'

'

$35,000,000

'

'

'

'

$75,000,000

'

'

$100,000,000

'

'

'

$35,000,000

$50,000,000

'

'

Revolving line of credit, scheduled maturity date

29-Apr-14

'

'

'

28-Jun-18

20-Mar-17

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit, interest at LIBOR

'

'

'

'

'

'

2.00%

1.75%

1.50%

2.50%

2.25%

2.00%

'

'

'

'

'

'

'

Applicable margin, during the period

'

'

'

'

'

'

'

'

0.00%

'

'

0.50%

0.00%

0.50%

'

'

'

'

'

Percentage of revolving unused line fee

0.25%

'

'

'

'

'

'

'

'

'

'

0.25%

'

'

'

'

'

'

'

Liquidity Threshold

'

'

'

7,500,000

'

'

'

'

'

'

'

9,375,000

'

'

'

'

'

'

'

Percent of total credit facility

'

'

'

12.50%

'

'

'

'

'

'

'

12.50%

'

'

'

'

'

'

'

Consecutive days of liquidity threshold

'60 days

'

'

'

'

'

'

'

'

'

'

'60 days

'

'

'

'

'

'

'

Revolving line of credit, extended maturity date

20-Mar-17

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum aggregate annual capital expenditures

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,000,000

'

'

'

8,000,000

Investment in joint ventures

'

'

'

'

'

'

'

'

'

'

'

'

'

'

500,000

'

'

2,000,000

'

Aggregate amount of acquisition as per amended Harris agreement

'

'

2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility covenants minimum fixed charge coverage ratio

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

Deferred financing costs

'

'

'

'

'

270,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit bears interest at BMO Bank's prime rate

3.25%

3.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding borrowings under its revolving line of credit

8,900,000

5,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Remaining outstanding balance

9,000,000

25,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of applicable margin interest rate

1.67%

1.96%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unused and available line of credit balance

$47,900,000

$19,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Leases_Additional_Information_

Leases - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Leases [Abstract]	'	'	'
Rent expense under operating lease	$2.70	$2.50	$1.70

Leases_Future_Minimum_Lease_Pa

Leases - Future Minimum Lease Payments Due Under Operating Leases (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Leases [Abstract]	'
2014	$2,556
2015	2,529
2016	2,352
2017	1,916
2018	1,010
Total Operating Lease	$10,363

Recovered_Sheet9

2012 Incentive Compensation Plan - Additional Information (Detail) (USD $)

0 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

Aug. 28, 2013

Jun. 06, 2012

Aug. 29, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Jun. 17, 2013

Dec. 31, 2013

Dec. 31, 2013

Jul. 31, 2013

Dec. 31, 2013

Jun. 06, 2012

Dec. 31, 2013

Jun. 17, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 10, 2013

Oct. 14, 2013

Oct. 01, 2013

Maximum [Member]

Minimum [Member]

Employee Stock Option 2012 [Member]

Employee Stock Option 2012 [Member]

Stock Compensation Plan [Member]

Stock Compensation Plan [Member]

Stock Compensation Plan [Member]

Stock Appreciation Rights (SARs) [Member]

Stock Appreciation Rights (SARs) [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

Restricted Stock [Member]

2012 Plan [Member]

Chief Operating Officer [Member]

Chief Operating Officer [Member]

Maximum [Member]

2012 Plan [Member]

Employee Stock Option 2012 [Member]

Employee Stock Option 2012 [Member]

Employee Stock Option 2012 [Member]

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock repurchased by the company, shares

'

'

'

830,925,000

830,925,000

'

'

'

'

'

830,925

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock available for issuance

'

'

'

'

'

'

'

'

'

'

'

700,000

'

'

'

'

'

'

'

'

'

'

'

'

Share authorized for stock based compensation

'

'

'

'

'

'

'

'

'

'

'

'

1,530,925

'

'

'

'

'

'

'

'

'

'

'

Number of shares granted to employees

3,000

'

4,833

0

'

'

'

'

136,661

'

'

'

'

543,872

543,872

'

162,993

'

'

'

'

1,500

10,000

6,999

Common stock available for further issuance

'

'

'

'

'

'

'

'

'

'

'

'

824,060

'

'

'

'

'

'

'

'

'

'

'

Number of shares granted under SAR Award Agreement

'

543,872

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, market value per share

'

'

'

$22.07

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Valuation dates of common stock under SAR award agreement, description

'

'

'

'Commence after grant date and prior to expiration date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

SAR award expiration period from grant date

'

'

'

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expected term

'

'

'

'6 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Risk-free interest rate

'

0.92%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividend yield

'

'

'

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Anticipated volatility factor and zero dividend yield

'

55.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Discount on valuation of trading activity

'

'

'

15.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of the SAR granted per share

'

'

'

3.31

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Service period

'

'

'

'1 year 9 months 11 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expected term to exceed public equivalent value over aggregate exercise price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expenses for the SAR granted

'

'

'

907,000

478,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total unrecognized compensation expense

'

'

'

415,000

'

'

'

'

'

'

'

'

'

'

'

'

6,404,000

0

0

'

6,043,000

'

'

'

Restricted stock fair value

51.91

'

52.28

'

'

'

'

'

'

'

'

'

'

'

'

36

'

'

'

'

'

71.81

56.28

57.81

Compensation expenses

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$361,000

'

'

'

'

'

'

'

Expected period of recognition of cost

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'8 years

'

'

'

'

'

'

'

Restricted stock agreement vesting

'

'

'

'

'

'

'

'

'

'These shares of Restricted Stock vest in various increments and periods over a maximum of ten years from the date the stock was granted as defined under the applicable Restricted Stock Award Agreement.

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Vesting period for restricted stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'

'

'

'

Income_Taxes_Summary_of_Expens

Income Taxes - Summary of Expense (Benefit) for Income Tax (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current tax expense	'	'	'
Federal	$2,629	$3,806	$2,816
State	955	1,053	827
Current tax expense, Gross	3,584	4,859	3,643
Deferred tax expense (benefit)	'	'	'
Federal	967	-542	-809
State	208	-174	-61
Deferred tax expense (benefit), Gross	-467	-716	-870
Income tax expense	$4,759	$4,143	$2,773

Income_Taxes_Summary_of_Compan

Income Taxes - Summary of Company's Effective Tax Rate on Income From Continuing Operations and Statutory Tax Rate (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Income tax (benefit) expense at federal statutory rate	($4,760)	$3,687	$2,324
State income tax, net of federal benefit	848	581	506
Non-deductible transaction expenses	'	'	259
Non-deductible private placement warrant expense	9,531	152	130
Domestic production activity	-376	-221	-216
Research tax credits	-1,054	-44	-240
Tax reserve reassessment	570	'	'
Other, net	'	-12	10
Income tax expense	$4,759	$4,143	$2,773
Income tax (benefit) expense at federal statutory rate	34.00%	34.00%	34.00%
State income tax, net of federal benefit	-6.10%	5.40%	7.40%
Non-deductible transaction expenses	'	'	3.80%
Non-deductible private placement warrant expense	-68.00%	1.40%	1.90%
Domestic production activity	2.70%	-2.00%	-3.10%
Research tax credits	7.50%	-0.40%	-3.50%
Tax reserve reassessment	-4.10%	'	'
Other, net	'	-0.20%	0.10%
Income tax expense	-34.00%	38.20%	40.60%

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Pre-tax loss	($14,001,000)	$10,845,000	$6,834,000
Excludable expenses included in pre-tax loss	28,031,000	448,000	'
Pre-tax income	14,030,000	11,293,000	'
Federal research tax credit	641,000	413,000	'
Tax credit carryforward expiration period	'20 years	'	'
Effective tax rate	-34.00%	38.20%	40.60%
Effective tax rate excluding private placement warrants expenses	33.90%	36.70%	'
Accrued for interest or penalties	15,000	0	'
Possible decrease in unrecognized tax benefits	$148,000	'	'

Income_Taxes_Summary_of_Compon

Income Taxes - Summary of Components of Net Deferred Tax Asset or Liability (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Income Tax Disclosure [Abstract]	'	'
Inventory	$1,630	$862
Allowances and bad debts	196	184
Accrued warranty	496	276
Accrued wages and benefits	359	331
Stock compensation	490	192
Deferred revenue	'	512
Other	302	54
Total deferred tax assets	3,473	2,411
Tax depreciation in excess of book	-966	-371
Total deferred tax liabilities	-966	-371
Net deferred tax assets	$2,507	$2,040

Income_Taxes_Schedule_of_Net_D

Income Taxes - Schedule of Net Deferred Tax Assets and Liabilities (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Income Tax Disclosure [Abstract]	'	'
Current deferred tax assets, net	$2,811	$2,176
Non-current deferred tax liabilities, net	-304	-136
Net deferred tax assets	$2,507	$2,040

Income_Taxes_Schedule_of_Chang

Income Taxes - Schedule of Change in Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Balance at December 31, 2012	'
Gross increases - current period tax positions	555
Balance at December 31, 2013	$555

Stockholders_Equity_Additional

Stockholders Equity - Additional Information (Detail) (USD $)

0 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

Jun. 06, 2012

Aug. 26, 2011

Aug. 26, 2011

Apr. 29, 2011

Dec. 31, 2013

Dec. 31, 2010

Dec. 31, 2012

Aug. 26, 2012

Dec. 31, 2011

Sep. 01, 2011

Aug. 15, 2013

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Sep. 01, 2011

Aug. 26, 2011

Oct. 31, 2011

Apr. 29, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Apr. 29, 2011

Jul. 16, 2013

Dec. 31, 2010

Apr. 29, 2011

Dec. 31, 2010

Apr. 29, 2011

Apr. 29, 2011

Dec. 31, 2013

Stock Appreciation Rights (SARs) [Member]

Stock Appreciation Rights (SARs) [Member]

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Series A Preferred Stock [Member]

Roth Warrant [Member]

Roth Warrant [Member]

Roth Warrant [Member]

Stock Purchase Agreement [Member]

Private Placement [Member]

Private Placement [Member]

Private Placement [Member]

Private Placement Warrants [Member]

Private Placement Warrants [Member]

Private Placement Warrants [Member]

Private Placement Warrants [Member]

Underwritten Public Offering [Member]

Before Reverse Stock Split [Member]

Before Reverse Stock Split [Member]

After Reverse Stock Split [Member]

After Reverse Stock Split [Member]

After Reverse Stock Split [Member]

Registration Payment Arrangement By Arrangement [Member]

Format Inc [Member]

Format Inc [Member]

Roth Warrant [Member]

Sale Of Stock [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from Issuance of Convertible Preferred Stock

'

'

'

'

'

'

'

'

'

'

'

'

$18,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Changes in aggregate value of common stock issued and outstanding

'

10,000

'

'

'

10,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of common shares outstanding

'

'

'

10,000,000

10,521,887

'

9,078,287

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,000,000

770,083

'

'

'

'

Common stock, number of shares issued after Reverse Split

'

9,496,753

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

312,500

24,093

105,000

'

Common stock, shares issued

'

'

'

'

11,352,812

'

9,909,212

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,360,000

'

Number of preferred stock converted

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

113,961

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred stock conversion price per share

'

$12

$12

'

$12

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional paid in capital

'

9,700,000

9,700,000

'

57,308,000

'

10,862,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of preferred stock converted into common stock

'

'

'

'

1,000

'

'

10,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock, shares authorized

'

'

'

'

50,000,000

'

50,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock exercise price

'

'

'

'

$0.00

'

$0.00

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$13

'

'

'

'

'

'

'

'

'

'

Common stock, shares outstanding

'

'

'

'

10,521,887

'

9,078,278

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Public offering shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,005,000

'

'

'

'

'

'

Underwritten public offering Price per share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$75.10

$16.18

'

'

'

'

$35

'

'

'

'

'

'

Shares sold through Public offering

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,050,000

'

'

'

'

'

'

Share sold by stockholders through public offering

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

955,000

'

'

'

'

'

'

Proceeds to the company from Public offering

'

'

'

'

36,750,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

34,530,000

'

'

'

'

'

'

Public offering expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

514,000

'

'

'

'

'

'

Shares issued withheld to satisfy income tax obligation

'

'

'

'

'

'

'

'

'

'

42,314

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares issued withheld to satisfy income tax obligation, Value

'

'

'

'

2,063,000

'

'

'

'

'

2,063,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock new issued to meet Stock appreciation right exercise

'

'

'

'

'

'

'

'

'

'

96,504

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Grantee exercised Stock appreciation right

'

'

'

'

'

'

'

'

'

'

181,291

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Income tax benefit realized in connection with exercise of stock appreciation right

'

'

'

'

1,642,000

'

'

'

'

'

'

1,642,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible preferred stock authorizes

'

'

'

'

114,000

'

114,000

'

'

'

'

'

'

114,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible preferred stock, par value per share

'

'

'

'

$0.00

'

$0.00

'

'

'

'

'

'

$0.00

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible preferred stock issued

'

'

'

'

0

'

0

'

'

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible preferred stock outstanding

'

'

'

'

0

'

0

'

'

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Private Placement proceeds allocated to preferred stock and Private Placement Warrants

'

'

'

18,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common equity value as adjusted for the Reverse Split

'

'

'

$10.08

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of converted shares of preferred stock issued in private placement

'

'

'

1,500,009

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Price per warrant

'

'

'

$3.85

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares of common stock issuable upon exercise of the private placement warrant

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

750,002

'

'

'

'

'

'

'

'

'

'

Preferred equity value

'

'

'

9,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Value assigned to the company preferred stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15,100,000

'

'

'

'

'

'

'

Warrants expiry date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

29-Apr-16

'

'

'

'

29-Apr-16

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate sale of shares

'

'

'

18,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated fair value

'

'

'

2,887,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Volatility factor

55.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

42.50%

45.00%

'

'

'

'

'

'

'

'

'

'

'

Risk-free interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.10%

'

'

'

'

'

'

'

'

'

'

'

'

'

Dividend yield

'

'

'

'

0.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

Private placement warrants term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

Exercise price per share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

13.2

'

'

'

'

13

13

'

'

'

'

'

'

'

'

'

'

'

Shares issued for warrants exercised

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

339,410

13,750

0

'

'

'

'

'

'

'

'

Common stock reserved for the exercise of the Private Placement Warrants

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

396,842

736,252

'

'

'

'

'

'

'

'

'

Adjusted shares of common stock

'

'

'

'

'

'

'

'

'

105,000

'

'

'

'

'

'

62,116

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated fair value of the Roth Warrant

'

'

'

400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share price for warrant issuable

'

'

'

$3.80

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Warrant shares issuable

'

'

'

'

42,884

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock repurchased by the company, shares

'

'

'

'

830,925,000

'

830,925,000

'

'

'

'

'

'

'

'

'

'

'

830,925

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock repurchased by the company, value

'

'

'

'

4,250,000

'

4,250,000

'

'

'

'

'

'

'

'

'

'

'

4,250,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock repurchased by the company, per share value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$5.11

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Transaction costs incurred in connection with the Reverse Recapitalization and the Private Placement consist of cash costs

'

'

'

'

5,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Allocated equity

'

'

'

'

4,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Costs allocated to the Private Placement Warrants

'

'

'

'

800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Costs for filing registration statements

'

'

'

'

'

'

'

'

600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Filing registration, condition for suspension, description

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'(which period may not be for more than 20 consecutive days or for a total of more than 45 days in any 12-month period)

Payment to investors

'

'

'

'

1.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.50%

Liquidated damages

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$300,000

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
Commitment And Contingencies [Line Items]	'
Commitment towards investments in joint venture	$1.20
Private Placement [Member]	'
Commitment And Contingencies [Line Items]	'
Registration Rights Agreement filing description	'The Private Placement Registration Rights Agreement provides, among other things, that if, after such registration statement has been declared effective by the SEC, sales cannot be made pursuant to such registration statement for any reason, but excluding any period for which the use of any prospectus included in a registration statement has been suspended if and so long as certain conditions exist (which period may not be for more than 20 consecutive days or for a total of more than 45 days in any 12-month period), then the Company is required to pay amounts representing liquidated damages to each of the investors, on the same basis as the liquidated damages the Company could have been required to pay in connection with the initial registration statement filed pursuant to the Private Placement Registration Rights Agreement.
Number of consecutive days for suspension of registration statement	'20 days
Aggregated number of days, in which conditions regarding suspension persist	'45 days
Number of months as base period for aggregate and consecutive period	'12 months

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)

0 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

In Millions, except Share data, unless otherwise specified

Aug. 26, 2013

Aug. 05, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Oct. 31, 2011

Oct. 31, 2011

Oct. 31, 2011

Oct. 31, 2011

Oct. 31, 2011

Dec. 31, 2013

Oct. 31, 2011

Purchase And Sale Agreement [Member]

Purchase And Sale Agreement [Member]

Purchase And Sale Agreement [Member]

Purchase And Sale Agreement [Member]

Chief Executive Officer [Member]

Chief Executive Officer [Member]

Stock Purchase Agreement [Member]

Agreement One [Member]

Agreement Two [Member]

Restricted Stock [Member]

Convertible Debt Securities [Member]

Related Party Transaction [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Subscription agreement effective date as of April 16, 2005

'

'

'

'

'

'

'

'

'

'

1-Jan-08

'

Employment agreement effective date as of April 16, 2006

'

'

'

'

'

'

'

'

'

'

1-Jan-08

'

Percent of common stock represent by related party

'

'

'

'

'

'

'

'

'

'

10.00%

'

Percent of equity interest by related party

'

'

'

'

'

'

'

'

'

'

10.00%

'

Preferred stock converted to common stock upon the consummation of the reverse split

'

'

'

'

'

'

'

'

'

830,925

'

'

Cash payments for share transfer

'

'

'

'

'

$4.25

'

'

'

'

'

'

Sale of common stock to third party under condition A

'

'

11,352,812

9,909,212

'

'

112,530

135,036

90,024

'

'

'

Par value of common stock to third party under condition A

'

'

$0.00

$0.00

'

'

$22.22

$27.77

$33.32

'

'

'

Common stock repurchased by the company, per share value

'

'

'

'

'

'

'

'

'

'

'

$5.11

Cash payments to third party

3

3.75

2.5

'

'

'

'

'

'

'

'

'

Cash payment from related party

3

3.75

2.5

'

'

'

'

'

'

'

'

'

Fee and other consulting service expenses

'

'

$127,000

$125,000

$156,000

'

'

'

'

'

'

'