Power Solutions International (PSIX) 10-K13 Mar 152014 FY Annual reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
Document and Entity Information (USD $)	Dec. 31, 2014	Mar. 03, 2015	Jun. 30, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	PSIX
Entity Registrant Name	Power Solutions International, Inc.
Entity Central Index Key	1137091
Current Fiscal Year End Date	-19
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		10,731,284
Entity Public Float			$334,387,590

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets
Cash	$6,561	$6,306
Accounts receivable, net	81,740	42,730
Inventories, net	93,903	55,986
Prepaid expenses and other current assets	4,801	2,173
Deferred income taxes	3,998	2,811
Total current assets	191,003	110,006
Property, plant & equipment, net	20,892	13,104
Intangible assets, net	21,392
Goodwill	23,546
Other noncurrent assets	5,804	3,509
TOTAL ASSETS	262,637	126,619
Current liabilities
Accounts payable	60,877	24,444
Income taxes payable	779	167
Accrued compensation and benefits	5,983	3,758
Current maturities of long-term debt	1,667
Other accrued liabilities	6,742	4,016
Total current liabilities	76,048	32,385
Long-term obligations
Revolving line of credit	78,030	17,933
Deferred income taxes	3,241	304
Private placement warrants	11,036	24,525
Long term debt, less current maturities	2,361
Other noncurrent liabilities	1,122	1,051
TOTAL LIABILITIES	171,838	76,198
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, 2014 and 2013.
Common stock - $0.001 par value. Authorized: 50,000,000 shares. Issued: 11,562,209 and 11,352,812 shares at December 31, 2014 and 2013, respectively. Outstanding: 10,731,284 and 10,521,887 shares at December 31, 2014 and 2013, respectively.	12	11
Additional paid-in-capital	73,959	57,308
Retained earnings (accumulated deficit)	21,078	-2,648
Treasury stock, at cost, 830,925 shares at December 31, 2014 and 2013.	-4,250	-4,250
TOTAL STOCKHOLDERS' EQUITY	90,799	50,421
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$262,637	$126,619

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
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	11,562,209	11,352,812
Common stock, shares outstanding	10,731,284	10,521,887
Treasury stock, at cost	830,925	830,925

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net sales	$347,995	$237,842	$202,342
Cost of sales	280,950	193,316	168,425
Gross profit	67,045	44,526	33,917
Operating expenses:
Research & development and engineering	16,900	10,439	7,377
Selling and service	9,715	7,545	5,925
General and administrative	14,386	11,575	8,299
Total operating expenses	41,001	29,559	21,601
Operating income	26,044	14,967	12,316
Other (income) expense:
Interest expense	1,331	657	1,023
Loss on debt extinguishment		270
Contingent consideration	-3,840
Private placement warrant (income) expense	-6,169	28,031	448
Other expense, net	183	10
Total other (income) expense	-8,495	28,968	1,471
Income (loss) before income taxes	34,539	-14,001	10,845
Income tax provision	10,813	4,759	4,143
Net income (loss)	$23,726	($18,760)	$6,702
Common Shares [Member]
Weighted-average common shares outstanding:
Basic	10,706,780	9,779,457	9,068,846
Diluted	11,131,617	9,779,457	9,068,846
Earnings (loss) per share-basic Common shares	$2.22	($1.92)	$0.74
Earnings (loss) per share-diluted Common shares	$1.58	($1.92)	$0.74

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Stockholders' Equity (USD $)	Total	Preferred Stock [Member]	Common Stock [Member]	Common Stock Warrant [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	(Accumulated Deficit) Retained Earnings [Member]
In Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Common Stock Warrant [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	(Accumulated Deficit) Retained Earnings [Member]
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
Net (loss) income	23,726						23,726
Acquisition consideration	5,060				5,060
Tax effect of acquisition consideration	-681				-681
Share-based compensation expense	1,254				1,254
Payment of withholding taxes for net settlement of share-based awards	-430				-430
Excess tax benefit from exercise of share-based awards	2,704				-430
Exercise of private placement warrants	8,745		1		8,744
Balance at Dec. 31, 2014	$90,799		$12		$73,959	($4,250)	$21,078

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities
Net income (loss)	$23,726	($18,760)	$6,702
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation	2,562	1,528	1,074
Amortization	2,147	40	31
Deferred income taxes	1,011	-467	-716
Non-cash interest expense	87	64	81
Share-based compensation expense	1,254	1,268	478
Increase in accounts receivable allowances	204	160	43
Increase in inventory reserves	679	649	739
Inventory step up to fair value	482
(Decrease) increase in valuation of private placement warrants liability	-6,169	28,031	448
Decrease in valuation of contingent consideration liability	-3,840
Loss on investment in joint venture	209	39
Loss on disposal of assets	284	72	111
Loss on debt extinguishment		270
(Increase) decrease in operating assets, net of effects of business acquisition:
Accounts receivable	-35,225	-5,410	-8,000
Inventories	-34,125	-16,667	-7,314
Prepaid expenses and other assets	-4,492	-1,849	-616
Increase (decrease) in operating liabilities, net of effects of business acquisition:
Accounts payable	34,140	-3,687	2,473
Accrued compensation and benefits and other accrued liabilities	667	2,763	924
Income taxes payable	585	-445	510
Other noncurrent liabilities	129	-34	91
Net cash used in operating activities	-15,685	-12,435	-2,941
Cash flows from investing activities
Purchases of property, plant, equipment and other assets	-7,239	-6,007	-3,890
Acquisition, net of cash acquired	-44,122
Investment in joint venture	-350	-500
Increase in cash surrender value of life insurance	-2	-7	-8
Net cash used in investing activities	-51,713	-6,514	-3,898
Cash flows from financing activities
(Decrease) increase in cash overdraft			-3,780
Proceeds from stock offering		36,750
Initial proceeds from borrowings under revolving line of credit		38,995
Repayment of prior revolving line of credit		-38,945
Proceeds from exercise of private placement warrants	1,425	4,412	178
Proceeds from long-term debt	5,000
Payments on long-term debt	-972		-64
Payment of withholding taxes from net settlement of share-based awards	-430	-2,063
Excess tax benefit from exercise of share-based awards	2,704	1,642
Cash paid for financing and transaction fees	-171	-3,020	-228
Net cash provided by financing activities	67,653	24,712	7,382
Increase in cash	255	5,763	543
Cash at beginning of the year	6,306	543
Cash at end of the year	6,561	6,306	543
Supplemental disclosures of cash flow information
Cash paid for interest	1,153	660	912
Cash paid for income taxes	5,333	4,869	4,353
Supplemental disclosures of non-cash transactions
Unpaid property, plant, equipment and other assets	799	1,552	928
Fair value of private placement warrants exercised	7,320	7,172	52
Supplemental disclosures of business
Fair value of assets acquired	60,104
Less liabilities assumed	-5,805
Net assets acquired	54,299
Less shares expected to be issued	-8,900
Less cash acquired	-1,277
Business acquisition, net of cash acquired	44,122
Noncurrent Obligation [Member]
Cash flows from financing activities
Advances from revolving line of credit - noncurrent obligation	82,402	74,841	72,062
Repayment of prior revolving line of credit	-22,305	-87,900	-65,035
Current Obligation [Member]
Cash flows from financing activities
Net change in revolving line of credit - current obligation			$4,249

Description_of_the_company_and

Description of the company and summary of significant accounting policies	12 Months Ended
	Dec. 31, 2014
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, (“Company”), is the successor in a migratory merger (“Migratory Merger”) effective August 26, 2011, 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”) (“Reverse Recapitalization”), and in connection with this transaction, Format changed its corporate name to Power Solutions International, Inc. The W Group was considered the accounting acquirer and remained as the surviving corporation of the reverse acquisition, becoming a wholly-owned subsidiary of Power Solutions International, Inc.

	On April 1, 2014 (the “Date of Acquisition”), the Company’s Board of Directors approved and the Company acquired Professional Power Products, Inc. (“3PI”), pursuant to a stock purchase agreement (the “Stock Purchase Agreement”), with Carl L. Trent and Kenneth C. Trent (each individually a “Shareholder” and collectively the “Shareholders”) and CKT Holdings Inc., a Wisconsin corporation (the “Seller”) owned by the Shareholders. 3PI is a leading designer and manufacturer of large, custom engineered integrated electrical power generation systems serving the global diesel and natural gas power generation markets. Refer to Note 3, “Acquisition of Professional Power Products, Inc.” for a further discussion of this acquisition.

	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”), including large custom-engineered integrated electrical power generation systems. The Company’s customers include 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 its customers with 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 its customers with 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.

	Reclassification

	Certain amounts recorded in the prior period consolidated financial statements presented have been reclassified to conform to the current period financial statement presentation. These reclassifications have no effect on previously reported net income.

	Principles of consolidation

	The consolidated financial statements presented herein include the accounts of Power Solutions International, Inc. and its direct and indirect wholly owned subsidiaries. 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. As of December 31, 2014, the Company had recognized revenue associated with approximately $3.2 million of undelivered product. The Company anticipates the collection of any unpaid balances during 2015. The Company did not enter into any bill and hold arrangements during 2013 or 2012.

	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.



	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:



			2014				2013
	Balance at beginning of year		$	452			$	408
	Charged to expense			204				160
	(Write-offs), net of recoveries			(4	)			(116	)

	Balance at end of year		$	652			$	452


	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:



		2014				2013
Raw materials		$	87,133			$	53,631
Work in process			1,752				1,417
Finished goods			6,777				2,448

Total inventories		$	95,662			$	57,496
Inventory allowance			(1,759	)			(1,510	)

Inventories, net			93,903				55,986


The activity in the Company’s inventory allowance as of December 31 was as follows:



		2014				2013
Balance at beginning of year		$	1,510			$	966
Charged to expense			679				649
Write-offs			(430	)			(105	)

Balance at end of year		$	1,759			$	1,510




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, 2014 and 2013.

Goodwill and other intangibles

Goodwill represents the excess of purchase price and related costs over the values assigned to the net tangible and identifiable intangible assets of businesses acquired. In accordance with ASC 350, Intangibles —Goodwill and Other Intangibles, goodwill is not amortized, but instead is tested for impairment annually, or more frequently if circumstances indicate a possible impairment may exist. Absent any interim indicators of impairment, the Company tests for goodwill impairment on a specified date of each year, October 1.

In accordance with ASC 350, Intangibles — Goodwill and Other Intangibles, the Company amortizes its intangible assets with finite lives using an accelerated method over their respective estimated useful lives and will review for impairment whenever impairment indicators exist. The Company’s intangible assets consist of backlog, customer relationships and trade names and trademarks.

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 liability as of December 31 was as follows:



		2014				2013
Balance at beginning of year		$	1,274			$	690
Acquisition on April 1, 2014			1,600				—
Charged to expense			2,020				1,195
Payments			(1,800	)			(611	)

Balance at end of year		$	3,094			$	1,274


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 (income) expense” in the Company’s consolidated statements of operations. See Note 7, “Fair value of financial instruments,” for detail describing the valuation approach for the Private Placement Warrants.

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 $14.9 million, $9.4 million and $6.8 million for the years ended December 31, 2014, 2013, and 2012, 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, term debt 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 and term debt approximate 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, 2014, 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 approximately $159,000. The fair value of the private placement warrants is described below in Note 7, “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, 2014 and 2013, 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, 2014 and 2013, the Company had an unrecognized tax benefit of $740,000 and $570,000, respectively, for uncertain tax positions including interest and penalties. 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. As of December 31, 2014 and 2013, the Company maintained cash in a non-interest bearing account at a financial institution. At December 31, 2014 and 2013, cash accounts were 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 in both 2014 and 2013.

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.

Three customers (“Customer A”, “Customer B” and “Customer C”) individually accounted for more than 10% of the Company’s sales during one or more years from 2012 through 2014. Customer A represented 11%, 16% and 16% of consolidated net sales in 2014, 2013, and 2012, respectively. Customer B and Customer C represented 11% and 11% of consolidated net sales in 2014, respectively, and less than 10% of consolidated net sales in 2013 and 2012.

Five customers (“Customer A, “Customer B,” “Customer C,” all referred to above, “Customer D” and “Customer E”) individually accounted for more than 10% of consolidated accounts receivable at December 31, 2014 or 2013. At December 31, 2014 and December 31, 2013, Customer A represented less than 10% of consolidated accounts receivable and 11% of consolidated accounts receivable, respectively. At December 31, 2014 and 2013, Customer B represented 14% and 13% of consolidated accounts receivable, respectively. At December 31, 2014 and 2013, Customer C represented 17% of consolidated accounts receivable and less than 10% of consolidated accounts receivable, respectively. At December 31, 2014 and 2013, Customer D represented 11% and 18% of consolidated accounts receivable, respectively. Customer E represented 11% of consolidated accounts receivable in 2014, and less than 10% of the Company’s accounts receivable in 2013.

Three suppliers (“Supplier A,” “Supplier B” and “Supplier C”) individually accounted for more than 10% of the Company’s purchases during one or more years from 2012 through 2014. Supplier A accounted for 15%, 30% and 30% of the Company’s purchases in 2014, 2013 and 2012, respectively. Supplier B accounted for 16% of the Company’s purchases in 2012, and less than 10% of the Company’s purchases in 2014 or 2013. Supplier C accounted for 27% and 15% of the Company’s purchases in 2014 and 2013, respectively, and less than 10% of the Company’s purchases in 2012.

Recently_issued_accounting_pro

Recently issued accounting pronouncements	12 Months Ended
Recently issued accounting pronouncements	Dec. 31, 2014
Accounting Changes and Error Corrections [Abstract]
Recently issued accounting pronouncements	2. Recently issued accounting pronouncements

	The Company evaluates the pronouncements of authoritative accounting organizations, including the Financial Accounting Standards Board (FASB), to determine the impact of new pronouncements on GAAP and the Company. In May of 2014, the FASB and International Accounting Standards Board jointly issued a final standard on revenue recognition which outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers. This standard will supersede most current revenue recognition guidance. Under the new standard, entities are required to identify the following within a contract with a customer; the separate performance obligations in the contract; the transaction price; allocation of the transaction price to the separate performance obligations in the contract; and the appropriate amount of revenue to be recognized when (or as) the entity satisfies each performance obligation. The standard is effective for fiscal years, and the interim periods within those years, beginning after December 15, 2016. Entities have the option of using either retrospective transition or a modified approach in applying the new standard. The Company is currently evaluating the approach it will use to apply the new standard and the impact that the adoption of the new standard will have on the Company’s consolidated financial statements. There were no additional new accounting pronouncements that have been issued or adopted during the year ended December 31, 2014, that are expected to have a significant effect on the Company’s consolidated financial statements.

Acquisition_of_Professional_Po

Acquisition of Professional Power Products, Inc.	12 Months Ended
Acquisition of Professional Power Products, Inc.	Dec. 31, 2014
Business Combinations [Abstract]
Acquisition of Professional Power Products, Inc.	3. Acquisition of Professional Power Products, Inc.

	On the Date of Acquisition, the Company acquired all of the issued and outstanding stock of 3PI, an Illinois corporation and wholly-owned subsidiary of CKT Holdings Inc., for cash of $45.4 million, including cash acquired of $1.3 million, and agreed to pay to the Seller additional consideration of between $5,000,000 and $15,000,000 in shares of the Company’s common stock, valued at $76.02 per share (i.e., between 65,772 and 197,316 shares), based upon, and following the final determination in accordance with the Stock Purchase Agreement of, the 3PI EBITDA (as defined in the Stock Purchase Agreement). As of the Date of Acquisition, this consideration was valued at $8.9 million, and accordingly the total consideration payable for 3PI was valued at $54.3 million. The consideration payable in shares of the Company’s common stock consisted of (i) fixed consideration and (ii) contingent consideration. The Stock Purchase Agreement included a provision by and among the Company, Shareholders and Seller to treat the purchase of the 3PI stock as an acquisition of assets for income tax purposes.

	The fixed portion of the consideration, representing 65,772 shares of the Company’s common stock valued at $5,060,000 at the Date of Acquisition was classified as a component of equity in the Company’s consolidated balance sheet as of December 31, 2014. The fixed portion of the consideration was not subject to revaluation adjustment for financial reporting purposes. The contingent portion of the consideration (i.e., the earn-out consideration) was up to 131,544 shares of the Company’s common stock (i.e., the difference between the maximum number of shares issuable of 197,316 and the fixed number of shares issuable of 65,772). The earn-out portion of consideration was initially valued at $3,840,000 as of the Date of Acquisition and recognized as a liability on the Company’s consolidated balance sheet. The measurement period for determining the amount of contingent consideration ultimately payable to the Sellers was based upon the 2014 full calendar-year performance of 3PI as defined in the Stock Purchase Agreement. The minimum threshold for payout of the earn-out consideration was not met as of December 31, 2014. Accordingly, the Company reversed the liability that had been recorded and recognized a gain of $3,840,000 which amount has been classified as “Other income” in the Company’s consolidated results of operations for the year ended December 31, 2014.

	The Company incurred total transaction costs related to the acquisition of approximately $811,000, all of which was recognized and classified within general and administration expense in the Company’s consolidated statements of operations in 2014 in accordance with generally accepted accounting principles in the U.S. (“GAAP”). To facilitate the transaction, the Company entered into an amended and restated credit agreement with Wells Fargo Bank, N.A. on April 1, 2014, to increase its revolving line of credit and secured a $5.0 million term loan to finance this acquisition. Refer to Note 8, “Revolving line of credit and term loan” for a further description of these obligations.

	The acquisition of 3PI has been accounted for as a business combination in accordance with ASC 805, Business Combinations, and, as such, assets acquired and liabilities assumed have been recorded at their respective fair values. The excess of the acquisition consideration over the fair value of assets acquired and liabilities assumed was allocated to goodwill. The determination of the estimated fair values required management to make significant estimates and assumptions. The more significant assumptions included estimating future cash flows and developing appropriate discount rates. Independent valuation specialists conducted a valuation to assist management of the Company in determining the estimated fair values of inventory, machinery and equipment, intangible assets and contingent consideration. The Company’s management is responsible for the internal and third party valuations and appraisals. The work performed by the independent valuation specialists, has been considered in management’s estimates of fair values reflected. Fair value measurements can be highly subjective, and the reasonable application of measurement principles may result in a range of alternative estimates using the same facts and circumstances. The purchase price for this acquisition allocated to the assets acquired and liabilities assumed based on their estimated fair values was as follows:



			April 1, 2014			Measurement			April 1, 2014
			(As initially			period			(As adjusted)
			reported)			adjustment
	Assets acquired:
	Cash		$	1,277		$	—		$	1,277
	Accounts receivable			3,989			—			3,989
	Inventories			5,073			(120	)		4,953
	Prepaid expenses and other current assets			243			—			243
	Property, plant & equipment			2,596			—			2,596

	Total tangible assets			13,178			(120	)		13,058

	Intangible assets:
	Intangible assets			23,500			—			23,500
	Goodwill			22,372			1,174			23,546

	Total assets acquired			59,050			1,054			60,104

	Liabilities assumed:
	Accounts payable			1,494			—			1,494
	Accrued liabilities			3,257			1,054			4,311

	Total liabilities assumed			4,751			1,054			5,805

	Net assets acquired		$	54,299		$	—		$	54,299


	The above estimated fair values of assets acquired and liabilities assumed were based on known information as of April 1, 2014, were provisionally allocated to the assets acquired and liabilities assumed on an interim basis and deemed final as of December 31, 2014. There are inherent uncertainties and management judgment required in these determinations. The fair value measurements of the assets acquired and liabilities assumed were based on valuations involving significant unobservable inputs, or Level 3 in the fair value hierarchy. The Company believes that this information provides a reasonable basis for estimating the fair values. Except as discussed below, the assets acquired and the liabilities assumed were stated at their estimated fair values at the Date of Acquisition.

	The fair value of accounts receivable acquired was adjusted for amounts known or highly likely to be uncollectible based upon an assessment of known facts and circumstances as of the Date of Acquisition and additional information arising subsequent to the Date of Acquisition with respect to these known facts and circumstances. The gross amount of accounts receivable acquired was approximately $4,332,000 of which $343,000 is expected to be uncollectible.

	The inventory acquired was revalued to its fair value. While the cost of raw materials generally approximates fair value, the value of work in process and finished goods inventory was “stepped up” by $482,000, representing the estimated selling price of that inventory less the sum of costs to complete and a reasonable allowance for the Company’s selling efforts. This “stepped up” inventory value was recognized within the Company’s cost of sales during 2014. Subsequent to the Date of Acquisition, the inventory was further adjusted by approximately $120,000, reflecting the value of the inventory acquired as of April 1, 2014.



	See Note 6, “Goodwill and other intangibles,” for detail describing the intangible assets acquired and the amortization period based on the estimated useful lives of the intangible assets. The fair value of backlog and customer relationships was derived using the multi-period excess earnings method. The fair value of the trade names and trademarks was derived using the relief from royalty method.

	The fair value of property, plant and equipment was based upon an appraisal of these assets or the acquisition costs of assets acquired immediately prior to the Date of Acquisition.

	Goodwill largely consists of geographic expansion of product sales, manufacturing and other synergies of the combined companies, and the value of the assembled workforce.

	The accounts payable and accrued liabilities assumed were based on their book values which approximated their fair values at the Date of Acquisition. Subsequent to the Date of Acquisition, the accrued liabilities were further adjusted by $1,054,000.

	During the year ended December 31, 2014, the Company’s liability for the contingent consideration associated with the acquisition was measured at fair value based on unobservable inputs, and was thus, considered a Level 3 financial instrument. The fair value of the liability determined by this analysis was primarily driven by the Company’s expectations of achieving the performance measures required by the Stock Purchase Agreement, the resulting shares expected to be issued, and the share price of the Company’s common stock. The expected performance metrics and resulting shares expected to be issued were estimated based on a Monte Carlo simulation model considering actual and forecasted results over the measurement period. For the year ended December 31, 2014, the Company recognized income of $3,840,000 due to a decrease in the estimated fair value of the Company’s contingent consideration liability. This valuation adjustment was recorded as “Contingent consideration” in the Company’s consolidated statements of operations for the year ended December 31, 2014. As of December 31, 2014, the Company’s contingent consideration liability was determined to be zero.

	As a result of the provisions within the Stock Purchase Agreement, the Company treated the acquisition of 3PI as a purchase of assets for income tax purposes. Accordingly, the financial and income tax bases of the assets and liabilities were initially the same at the Date of Acquisition. The write-off of the earn-out portion of the contingent consideration and the difference in the book and tax basis of the fixed portion of the consideration resulted in a lower amount of goodwill that will be deductible by the Company for income tax purposes. Accordingly, the Company recognized deferred income tax liabilities arising from these differences which amounted to $1,570,000 and $681,000, respectively. The $1,570,000 was recognized in the Company’s income tax expense while the $681,000 was recognized as an adjustment to the Company’s additional paid-in-capital as of and for the year ended December 31, 2014. The total amount of goodwill that is expected to be deductible for income tax purposes was approximately $18.0 million at December 31, 2014.

	The assets, liabilities, and operating results of 3PI have been included in the Company’s consolidated financial statements from the Date of Acquisition to December 31, 2014. 3PI’s sales, net of intercompany sales, included in the Company’s operating results from the Date of Acquisition to December 31, 2014 were $20.4 million and 3PI reported an operating loss of approximately $2.0 million for the same period. Amortization expense related to identifiable intangible assets associated with the acquisition, further described in Note 6, “Goodwill and other intangibles,” and included in the consolidated financial statements, approximated $2,108,000 from the Date of Acquisition through December 31, 2014 and was included in the aforementioned loss from operations.



	The following supplemental unaudited pro forma information presents the financial results as if the transaction had occurred on January 1, 2013 as follows:



		Year ended
		(unaudited)
		December 31,			December 31,
		2014			2013
Net sales		$	353,175		$	278,117
Net (loss) income		$	23,671		$	(16,557	)
(Loss) earnings per share, basic		$	2.21		$	(1.69	)
(Loss) earnings per share, diluted		$	1.57		$	(1.69	)

The historical operating results of 3PI included in the proforma information above has been adjusted to exclude certain non-recurring expenses, principally transaction expenses which amount approximated $3,474,000 in 2014 and none in 2013.

The pro forma information presented above is for information purposes only and is not indicative of the results of operations that would have been achieved if the acquisition had taken place at an earlier date, nor are these results necessarily indicative of future consolidated results of operations of the Company.

Earnings_per_share

Earnings per share	12 Months Ended
Earnings per share	Dec. 31, 2014
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. The treasury stock method has been used to compute earnings (loss) per share. The Company has issued warrants (“Private Placement Warrants”) that represent the right to purchase shares of the Company’s common stock, stock appreciation rights (“SAR”), and restricted stock, all of which have been evaluated for their potentially dilutive effect under the treasury stock method. Refer to Note 11, “Stockholders’ equity” for a further description of the Private Placement Warrants and Note 10, “2012 Incentive compensation plan” for a further description of the SAR and restricted stock.
	The computations of basic and diluted earnings (loss) per share as of December 31, 2014, 2013 and 2012, were as follows:


		2014			2013			2012
	Numerator:
	Net income (loss)	$	23,726		$	(18,760	)	$	6,702
	Change in the value of Private Placement Warrants		(6,169	)		—			—

		$	17,557		$	(18,760	)	$	6,702

	Denominator:
	Weighted average common shares outstanding-basic		10,706,780			9,779,457			9,068,846
	Incremental shares from assumed exercise of Private Placement Warrants, SAR, restricted stock		424,837			—			—

	Weighted average common shares outstanding-diluted		11,131,617			9,779,457			9,068,846

	Earnings (loss) per share of common stock — basic and diluted
	Earnings (loss) per share of common stock — basic	$	2.22		$	(1.92	)	$	0.74

	Earnings (loss) per share of common stock — diluted	$	1.58		$	(1.92	)	$	0.74

	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 were 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.
	During the years ended December 31, 2014, 2013 and 2012, portions of the Private Placement Warrants were exercised, resulting in the issuance of 109,585 shares, 339,410 shares and 13,750 shares of Company common stock, respectively. See Note 11, “Stockholders’ equity” for further detail of these transactions.

Property_plant_and_equipment_n

Property, plant and equipment, net	12 Months Ended
Property, plant and equipment, net	Dec. 31, 2014
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:


		2014			2013
	Land	$	260		$	260
	Building and improvements		5,015			4,125
	Office furniture and equipment		3,705			2,723
	Tooling and equipment		13,736			7,595
	Transportation equipment		525			203
	Construction in progress		6,056			4,844

	Property, plant and equipment, at cost		29,297			19,750
	Accumulated depreciation		(8,405	)		(6,646	)

	Property, plant and equipment, net	$	20,892		$	13,104

	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 $2,562,000, $1,528,000 and $1,074,000, for the years ended December 31, 2014, 2013 and 2012, 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)
	Building and improvements	Lesser of (i) 39 years, (ii) expected useful life of improvement or (iii) life of lease (including likely extension thereof)
	Tooling and equipment	Up to 10 years
	Office furniture and equipment	5 – 10
	Transportation equipment	3 – 5

Goodwill_and_Other_Intangibles

Goodwill and Other Intangibles	12 Months Ended
Goodwill and Other Intangibles	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangibles	6. Goodwill and Other Intangibles
	Goodwill and other intangible assets are not amortized, but are reviewed annually or more frequently if indicators arise, for impairment. The Company’s evaluation of goodwill impairment involves first assessing qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit, as defined below, is less than its carrying amount. The Company may bypass this qualitative assessment, or determine that based on its qualitative assessment considering the totality of events and circumstances (including macroeconomic factors, industry and market considerations, current and projected financial performance, a sustained decrease in our share price, or other factors), that additional impairment analysis is necessary. This additional analysis involves comparing the Company’s market capitalization relative to the carrying value of its equity and other factors deemed appropriate by management as of December 31, 2014. However, actual fair values that could be realized in a transaction may differ from those used to evaluate the potential impairment of goodwill.
	Goodwill was evaluated for impairment at the reporting unit level, which was defined as the operating segment level. At December 31, 2014, goodwill recorded on the Company’s consolidated balance sheet was $23,546,000. The Company’s fair value measurement test, performed annually as of October 1, 2014, revealed no indications of impairment.
	Management reviews other intangible assets, which include backlog, customer relationships and trade names and trademarks, for impairment when events or changes in circumstances indicate the carrying amount of the asset may not be recoverable. In the event that impairment indicators exist, a further analysis is performed and if the sum of the expected undiscounted future cash flows resulting from the use of the asset were less than the carrying amount of the asset, an impairment loss equal to the excess of the asset’s carrying value over its fair value would be recorded. Management considers historical experience and all available information at the time the estimates of future cash flows are made, however, the actual cash values that could be realized may differ from those that are estimated. For the year ended December 31, 2014, there were no indications of impairment.
	Amortization expense for intangible assets was $2,147,000, $40,000 and $31,000 for the years ended December 31, 2014, 2013 and 2012, respectively. The table below shows the amortization period and intangible asset cost by intangible asset as of December 31, 2014 and the accumulated amortization and net intangible asset value in total for all those intangible assets that related to the Company’s acquisition of 3PI. Refer to Note 3, “Acquisition of Professional Power Products, Inc.” for a further discussion of this acquisition.


				2014
	Description of intangible	Amortization		Gross		Accumulated			Net
	Description of intangible	period		amount		amortization			amount
	Backlog	18 months		$	1,200	$	(1,095	)	$	105
	Customer relationships	13 years			20,600		(926	)		19,674
	Trade names and trademarks	13 years			1,700		(87	)		1,613

	Total			$	23,500	$	(2,108	)	$	21,392

	The weighted average useful life of those intangibles acquired and included in the table above was approximately 13 years as of December 31, 2014.

	The table below shows the estimated future amortization expense for intangible assets:


	Year	Estimated
		amortization
		expense
	2015	$	3,362
	2016		3,031
	2017		2,566
	2018		2,260
	2019		2,044
	Thereafter		8,129

	Total	$	21,392

Fair_value_of_financial_instru

Fair value of financial instruments	12 Months Ended
Fair value of financial instruments	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair value of financial instruments	7. Fair value of financial instruments
	As of December 31, 2014 and 2013, 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, 2014 and 2013, 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, 2014 and 2013, 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:


		2014			2013
	Market value of the Company’s common stock	$	51.61		$	75.1
	Exercise price	$	13		$	13
	Risk-free interest rate		0.39	%		0.51	%
	Estimated price volatility		55	%		42.5	%
	Contractual term		1.33 years			2.33 years
	Dividend yield		—			—
	The market value of the Company’s common stock was based on its closing price on December 31, 2014 and December 31, 2013, 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. If all other assumptions were held constant, the recorded liability of the Private Placement Warrants would increase or decrease by less than $100,000 due to a 10% change in the estimated price volatility in the Black-Scholes option pricing model.
	The following table summarizes the change in the estimated fair value of the Company’s Level 3 financial instrument as of December 31:


		2014			2013
	Balance at beginning of year	$	24,525		$	3,666
	Fair value of private placement warrants exercised		(7,320	)		(7,172	)
	(Decrease)/increase in the value of private placement warrants		(6,169	)		28,031

	Balance at end of year	$	11,036		$	24,525

	For the years ended December 31, 2014, 2013 and 2012, the Company recognized income of $6,169,000 and expenses of $28,031,000 and $448,000, respectively. This was due to a decrease in the estimated fair value of the Company’s Private Placement Warrants in 2014 and an increase in fair value of the Private Placement Warrants in 2013 and 2012. This (income) expense was recorded as “Private placement warrant (income) expense” in the Company’s consolidated statements of operations for the respective periods.
	Refer to Note 3, “Acquisition of Professional Power Products, Inc.”, for a further description of the income recognized due to a decrease in the estimated fair value of the Company’s contingent consideration.
	Financial liabilities measured at fair value
	The following table summarizes fair value measurements by level as of December 31, 2014, 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		—			—		$	11,036
	The following table summarizes fair value measurement 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
	Financial assets and liabilities not measured at fair value
	As of December 31, 2014 and 2013, the Company’s revolving line of credit and term debt, including accrued interest, recorded on the consolidated balance sheets were carried at cost. The carrying value of the revolving line of credit and term debt approximate 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 Topic 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_and_t

Revolving line of credit and term debt	12 Months Ended
Revolving line of credit and term debt	Dec. 31, 2014
Text Block [Abstract]
Revolving line of credit and term debt	8. Revolving line of credit and term debt
	On June 28, 2013, the Company entered into a credit agreement with Wells Fargo Bank, National Association (the “Wells Credit Agreement”), which replaced its prior credit agreement with BMO Harris Bank N.A. The Wells Credit Agreement enabled the Company to borrow under a revolving line of credit secured by substantially all of the Company’s tangible and intangible assets (other than real property). The Wells Credit Agreement (a) provided 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, could have been increased up to $100.0 million during the term of the Wells Credit Agreement; (b) bore 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 could have been designated to bear interest at LIBOR plus an applicable margin ranging from 1.50% to 2.00%; (c) had an unused line fee of 0.25% and (d) required the Company to report its fixed charge coverage ratio, when its Availability (as defined in the Wells Credit Agreement) was less than the Threshold Amount (as defined in the Wells Credit Agreement) and to continue to report its fixed charge coverage ratio until the date that Availability for a period of 60 consecutive days, was greater than or equal to the Threshold Amount. The Company was required to meet a minimum monthly fixed charge coverage ratio of not less than 1.0 to 1.0, the testing of which commenced on the last day of the month prior to the date on which its Availability was less than the Threshold Amount. The Threshold Amount was 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 have been increased during the term of the Wells Credit Agreement up to $100.0 million.
	On April 1, 2014, the Wells Credit Agreement was amended (the “Amended Wells Credit Agreement”) to increase the Company’s revolving line of credit from $75.0 million to $90.0 million. The Amended Wells Credit Agreement (a) bears interest at the Wells Fargo Bank’s prime rate plus an applicable margin ranging from 0% to 0.5%; 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%; (b) has an unused line fee of 0.25%; (c) requires the Company to report its fixed charge coverage ratio and leverage ratio as described below; (d) includes a $5.0 million term loan arrangement with Wells Fargo Bank; and (e) includes a letter of credit subfacility of the revolving line of credit. The principal amount of the $5.0 million term loan is payable in 36 equal monthly installments with the first payment due on June 1, 2014, plus interest at LIBOR plus 4.50%. As of December 31, 2014, the LIBOR rate on the term loan was 0.17%. The term loan may be paid in whole or in part without penalty at any time after June 30, 2014 upon at least 10 business days prior notice. Effective April 1, 2014 and during the period in which the term loan is outstanding, the Company is subject to a fixed charge coverage ratio covenant and a debt leverage ratio covenant. The Company is required to maintain a fixed charge coverage ratio of at least 1.20 to 1.00 and the Company’s debt leverage ratio may not exceed 4.0 to 1.0 during the period in which the term loan is outstanding. The Company used borrowings under the expanded revolving line of credit as well as the proceeds from the term loan to finance the acquisition of 3PI which was consummated on April 1, 2014 as described in Note 3, “Acquisition of Professional Power Products, Inc.”
	Other than the above mentioned amendment, the terms and conditions of the Amended Wells Credit Agreement are substantially similar to the Wells Credit Agreement. Under the Amended Wells Credit Agreement, the amount that the Company may borrow is limited to the lesser (i) of the maximum available amount and (ii) borrowing base. The borrowing base is calculated as a percentage of the Company’s eligible accounts receivable and eligible inventory, plus a defined amount based upon certain of the Company’s fixed assets (all as defined in the Amended Wells Credit Agreement). The Amended 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. The revolving line of credit is secured by substantially all of the Company’s tangible and intangible assets (other than real property). The Amended Wells Credit Agreement is scheduled to mature on June 28, 2018.

	On September 30, 2014 and again on February 11, 2015, the Company further amended its credit facility with Wells Fargo Bank, National Association to increase its revolving line of credit facility to $100.0 million and $125.0 million, respectively, (collectively with the Amended Wells Credit Agreement, the “Amended Wells Credit Agreement II”) and is subject to the same terms and conditions as described above.
	As of December 31, 2014, $71.0 million of the Company’s outstanding borrowings under its revolving line of credit bore interest at the LIBOR rate, plus an applicable margin. The weighted average interest rate on these borrowings was 1.66% as of December 31, 2014. The remaining outstanding balance of $7.0 million as of December 31, 2014 had been designated to bear interest at the prime rate, plus an applicable margin, which equaled 3.25% with the applicable margin included. The unused and available revolving line of credit balance was $21.2 million at December 31, 2014. As of December 31, 2014, the Company had approximately $4,028,000 outstanding under the term loan, which bore interest at LIBOR plus 4.50%, which equaled 4.67% with the applicable margin included. Principal payments due on the term loan were as follows as of December 31, 2014; $1,667,000 in 2015, $1,667,000 in 2016 and $694,000 in 2017.
	As of December 31, 2013, $9.0 million of the Company’s outstanding borrowings under its revolving line of credit bore interest at the LIBOR rate, plus an applicable margin, which equaled 1.67% with the applicable margin included. The remaining outstanding balance of $8.9 million as of December 31, 2013, bore interest at the prime rate, plus an applicable margin, which equaled 3.25% with the applicable margin included. The unused and available revolving line of credit balance was $47.9 million at December 31, 2013.

Leases

Leases	12 Months Ended
Leases	Dec. 31, 2014
Leases [Abstract]
Leases	9. Leases

	The Company leases certain buildings and equipment under various noncancelable operating lease agreements that contain renewal provisions. Rent expense under these leases approximated $3,314,000, $2,693,000 and $2,454,000 for the years ended December 31, 2014, 2013 and 2012, respectively.

	The future minimum lease payments due under operating leases as of December 31, 2014, were as follows:



	2015	$	3,700
	2016		3,939
	2017		3,488
	2018		2,494
	2019		1,471
	Thereafter		4,259

		$	19,351

2012_Incentive_compensation_pl

2012 Incentive compensation plan	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
2012 Incentive compensation plan	10. 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 a majority of 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 a majority of 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 185,993 shares of restricted stock had been granted through December 31, 2014 to eligible employees (as further described below). As of December 31, 2014, the Company had 801,060 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 SAR Grant Date and prior to the expiration date on each of which the market value per share of Company common stock was 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, which 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 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 fair value of 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 then 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 7, “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.

	During the year ended December 31, 2014, the Grantee exercised a portion of the shares that vested on June 6, 2014. During the year ended December 31, 2013, the Grantee fully exercised the portion of shares that vested on June 6, 2013. The impact of this transaction on the Company’s issued capital is described in Note 11, “Stockholders’ equity.”

	In the years ended December 31, 2014, 2013 and 2012, the Company recognized approximately $329,000, $907,000 and $478,000, respectively, of compensation expense in connection with the SAR. As of December 31, 2014, there was approximately $86,000 of total unrecognized compensation expense related to the SAR granted under the Plan. The Company expects the remaining SAR expense to be recognized during the first half of 2015.



	Restricted stock awards

	The Compensation Committee of the Board of Directors approved, and the Company granted, 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”). Restricted stock activity consisted of the following for the year ended December 31, 2014:



		Shares			Weighted Average Grant Date
					Fair Value
	31-Dec-13		162,993		$	39.29
	Granted		23,000			71.47
	Forfeited		(12,000	)		60.44
	Vested		(19,742	)		41.89

	31-Dec-14		154,251		$	42.18


	There was no Restricted Stock activity prior to December 31, 2013 with the exception of the grant of the 162,993 shares. 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. In the year ended December 31, 2014 and 2013, the Company recognized approximately $925,000 and $361,000, respectively, of compensation expense in connection with the Restricted Stock granted under the 2012 Plan. There was no similar expense recorded as of December 31, 2012. The fair value of restricted stock vested during 2014 was approximately $1,408,000. As of December 31, 2014, there was approximately $5,995,000 of total unrecognized compensation expense related to the Restricted Stock granted under the 2012 Plan. As of December 31, 2014, the weighted-average period over which the unrecognized compensation cost is expected to be recognized is approximately 7.0 years.

Stockholders_equity

Stockholders' equity	12 Months Ended
Stockholders' equity	Dec. 31, 2014
Equity [Abstract]
Stockholders' equity	11. Stockholders’ equity

	The statements of changes in stockholders’ equity for the years ended December 31, 2014, 2013 and 2012, present the changes giving effect to the Company’s common stock issued, stock compensation activity and Private Placement Warrant exercises, each of which is described below.

	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, 2014, 11,562,209 shares of Company common stock were issued and 10,731,284 shares of Company’s common stock were outstanding. 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. 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.

	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, 2014 and 2013, no shares of Series A Convertible preferred stock of the Company were issued or outstanding.



	SAR exercise for shares of Company common stock

	The Company granted a SAR to the Grantee on June 6, 2012 as further described in Note 10, “2012 Incentive compensation plan.” During the year ended December 31, 2014, the Grantee exercised the SAR with respect to 120,000 of the 181,291 shares of common stock underlying the SAR, the aggregate amount of which vested on June 6, 2014. As a result of these exercises the Company issued a total of 85,903 shares of the Company’s common stock in two exercises. In connection with these exercises, the excess of the underlying value of the 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. As such, the Company realized an income tax benefit of $2,427,000 for this incremental amount, which was recorded as a reduction in the Company’s income tax liability and an increase in additional paid-in-capital as of December 31, 2014. As of December 31, 2014, there were 61,291 unexercised shares under the SAR that vested on June 6, 2014.

	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 the Grantee’s 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. The Company realized an income tax benefit of $1,642,000 for the excess of the underlying value of the common stock issued over the amount recognized as compensation expense in the Company’s financial statements 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.

	Restricted stock vesting for shares of Company common stock

	The Compensation Committee of the Board of Directors approved, and the Company granted, shares of Restricted Stock to various employees pursuant to the 2012 Plan and subject to a Restricted Stock Award Agreement as further described in Note 10, “2012 Incentive compensation plan.” For the year ended December 31, 2014, various individuals’ awards vested resulting in the net issuance of 13,909 shares. Under the terms of the 2012 Plan, at the option of certain of those vested restricted stock participants, the Company withheld shares issued to satisfy the income tax obligations of these participants. The cash equivalent of the aggregate number of shares withheld was $430,000 for the year ended December 31, 2014, representing the income tax withholding obligations of the participants, which was remitted by the Company to the applicable taxing authorities. The payments of the income tax withholding obligations were recorded as a reduction in additional paid-in-capital as of December 31, 2014.

	In connection with the vesting and issuance of shares of the Company’s common stock under the 2012 Plan, other than the shares of common stock issued in connection with the SAR, the excess of the underlying value of the 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. As such, the Company realized an income tax benefit of $277,000 for this incremental amount which was recorded as a reduction in the Company’s income tax liability and an increase in additional paid-in-capital as of and for the year ended December 31, 2014.

	Private placement warrants

	In connection with a private placement (“Private Placement”) on April 29, 2011, investors in the Private Placement received Company preferred stock (which subsequently converted to shares of Company common stock) and Private Placement Warrants. 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, 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, 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 (income) expense” in the Company’s consolidated statements of operations.

	The Private Placement Warrants issued 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 a reverse split), when the Private Placement Warrants became exercisable, and the Company’s common stock valuation of $10.08 per share (as adjusted for a 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 7, “Fair value of financial instruments,” for detail describing the valuation approach for the Private Placement Warrants as of December 31, 2014 and 2013.

	During the years ended December 31, 2014, 2013 and 2012, a portion of the Private Placement Warrants were exercised, resulting in the issuance of 109,585 shares, 339,410 shares and 13,750 shares of the Company’s common stock, respectively.



	As of December 31, 2014 and 2013, 287,257 shares and 396,842 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.

	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.

	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.

	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 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.

	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.

Income_taxes

Income taxes	12 Months Ended
Income taxes	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income taxes	12. Income taxes

	The expense (benefit) for income taxes for the years ended December 31, was as follows:



			2014				2013			2012
	Current tax expense
	Federal		$	5,650			$	2,629		$	3,806
	State			1,448				955			1,053

				7,098				3,584			4,859

	Deferred tax expense (benefit)
	Federal			3,050				967			(542	)
	State			665				208			(174	)

				3,715				1,175			(716	)

	Total tax expense		$	10,813			$	4,759		$	4,143




	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:



			2014							2013						2012
			Amount				Percent			Amount			Percent			Amount			Percent
	Income tax (benefit) expense at federal statutory rate		$	12,089				35	%	$	(4,760	)		34	%	$	3,687			34	%
	State income tax, net of federal benefit			1,403				4			848			(6.1	)		581			5.4
	Non-deductible private placement warrant (income)/expense			(2,159	)			(6.3	)		9,531			(68.0	)		152			1.4
	Domestic production activity			(295	)			(0.9	)		(376	)		2.7			(221	)		(2.0	)
	Research tax credits			(851	)			(2.5	)		(1,054	)		7.5			(44	)		(0.4	)
	Tax reserve reassessment			170				0.5			570			(4.1	)		—			—
	Other, net			456				1.5			—			—			(12	)		(0.2	)

	Income tax expense		$	10,813				31.3	%	$	4,759			(34.0	)%	$	4,143			38.2	%


	The Company recognized pretax income of $34,539,000 which included $6,169,000 of permanently excludable income associated with a change in the valuation of the Company’s Private Placement Warrants for the year ended December 31, 2014. Excluding this income, the Company’s pre-tax income was $28,370,000. The Company recognized expenses of $28,031,000 and $448,000 in the years ended December 31, 2013 and 2012, respectively due to the change in the valuation of the Private Placement Warrants. Excluding these expenses, the Company’s pre-tax adjustment income was $14,030,000 and $11,293,000 for the years ended December 31, 2013 and 2012, respectively. Excluding the impact of the change in the valuation of the Private Placement Warrants, the Company’s effective income tax rates would have been 38.1%, 33.9% and 36.7% for the years ended December 31, 2014, 2013, and 2012, respectively.

	The Company’s income tax expense for the year ended December 31, 2014, increased principally due to the higher taxable income realized in 2014 as compared with 2013. Partially offsetting the increase in income tax expense for the year ended December 31, 2014 were research tax credits recorded in 2014, net of unrecognized tax benefits, arising from the one year extension of the federal research tax credit as well as continuing state research tax credits. The Company’s income tax expense recognized in 2013 was favorably affected by the recognition of federal research tax credits for 2012 and 2013. 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, at the time, 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.

	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:



			2014				2013
	Deferred tax assets
	Inventory		$	2,143			$	1,630
	Allowances and bad debts			280				196
	Accrued warranty			1,022				496
	Accrued wages and benefits			553				359
	Stock compensation			391				490
	Other			8				302

Total deferred tax assets			4,397				3,473

Deferred tax liabilities
Intangibles			(1,810	)			—
Tax depreciation in excess of book			(1,830	)			(966	)

Total deferred tax liabilities			(3,640	)			(966	)

Net deferred tax assets		$	757			$	2,507


The Company’s net deferred tax assets and liabilities are presented as follows in the Company’s consolidated balance sheets as of December 31:



		2014				2013
Current deferred tax assets, net		$	3,998			$	2,811
Non-current deferred tax liabilities, net			(3,241	)			(304	)

Net deferred tax assets		$	757			$	2,507


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, 2014, 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, 2014 and 2013, the amount accrued for interest and penalties was not material to the Company’s financial statements.



The change in unrecognized tax benefits excluding interest and penalties for the years ended December 31, 2014 and 2013 were as follows:



		2014				2013
Balance at beginning of year		$	555			$	—
Additions based on tax positions related to the current year			255				555
Reductions for tax positions of prior years			(87	)			—

Balance at end of year		$	723			$	555


As of December 31, 2014, management of the Company believes the liability for unrecognized tax benefits, excluding interest and penalties, could decrease by approximately $100,000 in 2015 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 2015, but the amount cannot be estimated.

In the normal course of business, the Company and its subsidiaries are subject to U.S. federal income tax as well as income tax of multiple state jurisdictions. The Company believes that it is no longer subject to examination by U.S. federal taxing authorities for years prior to 2011. With few exceptions, the Company and its subsidiaries’ state income tax returns are open to audit under the statute of limitations for the 2010 through the current tax years.

Defined_contribution_plan

Defined contribution plan	12 Months Ended
Defined contribution plan	Dec. 31, 2014
Text Block [Abstract]
Defined contribution plan	13. Defined contribution plan

	The Company sponsors two retirement savings plans for employees meeting certain eligibility requirements. Under both plans, participants may choose from various investment options and can contribute an amount of their eligible compensation annually as defined by the applicable plan document, subject to Internal Revenue Code limitations.

	The Power Great Lakes, Inc. Employees (401k) Profit Sharing Plan is funded by participant contributions and discretionary Company contributions. The Company made no discretionary contributions to this plan during 2014, 2013 or 2012. The Power Great Lakes, Inc. Employees (401k) Profit Sharing Plan was amended in 2013, to enable employees to invest in a fund which exclusively invests in the Company’s stock.

	The Professional Power Products, Inc. (401k) Retirement Plan is funded by participant contributions and Company matching contributions, as defined by the plan document. The Company contributed approximately $91,000 to this plan during 2014.

Commitments_and_contingencies

Commitments and contingencies	12 Months Ended
Commitments and contingencies	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and contingencies	14. Commitments and contingencies

	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 markets. As of December 31, 2014, the production facility was complete. Manufacturing has been scheduled to commence during 2015. In connection with this agreement, the Company has committed up to $1.2 million toward the joint venture of which $850,000 and $500,000 has been contributed as of December 31, 2014 and December 31, 2013, respectively. On December 9, 2014, the Company signed an agreement to enter into a joint venture with a construction and utility equipment manufacturer headquartered in Incheon, South Korea. In connection with this agreement, the Company has committed up to $1.0 million which is expected to be contributed during 2015.

Related_party_transactions

Related party transactions	12 Months Ended
Related party transactions	Dec. 31, 2014
Related Party Transactions [Abstract]
Related party transactions	15. Related party transactions
	On April 28, 2011, Gary Winemaster, Chief Executive Officer, and Thomas Somodi, who previously served as the Company’s Chief Strategy Officer and Chief Financial Officer entered into a purchase and sale agreement which was subsequently amended on October 31, 2011, whereby Mr. Winemaster agreed to purchase all of Mr. Somodi’s shares of preferred and common stock in The W Group.
	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, 2014, 2013 and 2012, 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 2014, 2013 and 2012, were $62,000, $127,000 and $125,000, respectively.

Unaudited_quarterly_financial_

Unaudited quarterly financial data	12 Months Ended
Unaudited quarterly financial data	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Unaudited quarterly financial data	16. Unaudited quarterly financial data

	Set forth below are the unaudited quarterly financial data for the fiscal years ended December 31, 2014 and 2013:



	For the quarters ended		March 31				June 30				September 30			December 31
	2014
	Net sales		$	66,735			$	83,378			$	93,972		$	103,910
	Cost of sales			54,805				67,982				75,344			82,819

	Gross profit			11,930				15,396				18,628			21,091
	Operating expenses			8,409				9,503				11,109			11,980

	Operating income			3,521				5,893				7,519			9,111
	Other (income)			(111	)			(240	)			(3,625	)		(4,519	)

	Income before income taxes			3,632				6,133				11,144			13,630
	Income tax provision			1,258				2,250				3,996			3,309

	Net income		$	2,374			$	3,883			$	7,148		$	10,321

	Net income per common share:
	Basic		$	0.23			$	0.37			$	0.66		$	0.96
	Diluted		$	0.19			$	0.34			$	0.56		$	0.48
	2013
	Net sales		$	52,576			$	59,138			$	64,628		$	61,500
	Cost of sales			43,407				47,954				52,256			49,699

	Gross profit			9,169				11,184				12,372			11,801
	Operating expenses			6,089				7,344				8,250			7,876

	Operating income			3,080				3,840				4,122			3,925
	Other expense			5,040				4,701				12,721			6,506

	(Loss) before income taxes			(1,960	)			(861	)			(8,599	)		(2,581	)
	Income tax provision			967				1,239				1,382			1,171

	Net (loss)		$	(2,927	)		$	(2,100	)		$	(9,981	)	$	(3,752	)

	Net (loss) per common share:
	Basic		$	(0.32	)		$	(0.23	)		$	(0.97	)	$	(0.36	)
	Diluted		$	(0.32	)		$	(0.23	)		$	(0.97	)	$	(0.36	)

	As discussed in Note 3, Acquisition of Professional Power Products, Inc., the Company acquired 3PI for cash and additional consideration in the form of shares of the Company’s common stock. As of the Date of Acquisition, this additional consideration was valued at $8.9 million. The consideration payable in shares of the Company’s common stock consisted of (i) fixed consideration and (ii) contingent consideration. The Company initially accounted for the entire $8.9 million of additional consideration as a liability and, as such, reported the change in the fair value of the fixed and contingent consideration as an adjustment classified within “Other (income) expense” of its results of operations in the three months ended June 30, 2014. Prior to the completion and issuance of its results for the three months ended September 30, 2014, the Company determined that, because approximately $5.1 million of the additional consideration was fixed, that portion of the consideration should have been recorded in stockholders’ equity and not as a liability. Further, the fixed consideration was not subject to revaluation adjustment. The Company reclassified the fixed consideration from current liabilities to stockholders’ equity on its balance sheet as of September 30, 2014 and appropriately excluded this amount from any revaluation adjustment in the three months ended September 30, 2014. The results for the three months ended June 30, 2014, reflect the aforementioned adjustments and are presented as if the fixed consideration was classified as stockholders’ equity as of the Date of Acquisition. Accordingly, “Other (income) expense” presented above reflects only the revaluation of the contingent portion of the consideration for the three months ended June 30, 2014.

	The Company also initially did not provide income taxes in its quarterly income tax provision related to the change in the valuation of the contingent consideration for either of the three months ended June 30, 2014 or September 30, 2014. The Company subsequently concluded that it was required to recognize a deferred income tax liability arising from the change in the recorded value of the contingent consideration because the recognition of the change created a difference between the book and tax basis of goodwill. Accordingly, “Income tax provision” presented above for each of the three months ended June 30, 2014 and September 30, 2014 reflects the effect of recognizing deferred income tax expense and the corresponding deferred income tax liability arising from the change in the valuation of the contingent consideration as a result of the difference in the book and tax basis of goodwill associated with the acquisition of 3PI.

	In evaluating the materiality of the foregoing revisions to the Company’s previously issued unaudited interim condensed consolidated financial statements, the Company considered the guidance set forth in SEC Staff Accounting Bulletin No. 99, Materiality, as well as Staff Accounting Bulletin 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements. The Company concluded that in both instances the errors were not material, individually or in the aggregate, to either of the relevant interim reporting periods. The Company therefore determined that amendments of its previously filed quarterly reports were not required. Accordingly, the required revisions to correct the 2014 interim periods are reflected herein. See below for the impact of the corrections on each of the quarters ended June 30, 2014 and September 30, 2014.

	Reconciliation of unaudited quarterly financial data

	Set forth below are only those interim periods and line items that were impacted by the aforementioned matters.



			Three months ended September 30, 2014
			As previously				(a)				As
			reported				Adjustment				revised
	Income tax provision		$	2,713			$	1,283			$	3,996
	Net income		$	8,431			$	(1,283	)		$	7,148
	Basic income per common share		$	0.78			$	(.12	)		$	0.66
	Diluted income per common share		$	0.68			$	(.12	)		$	0.56


(a)	As described above, the Company determined that the income arising from a change in the valuation of the contingent portion of the consideration recognized in the Company’s statement of operations for the three months ended September 30, 2014, required the provision of a corresponding deferred income tax liability. Accordingly, the adjustment presented reflects the recognition of deferred income tax expense in the three months ended September 30, 2014 in connection with the change in the valuation of the contingent portion of the consideration that was recognized in the Company’s statements of operations for the period.



		Three months ended June 30, 2014
		As previously				(b)				As
		reported				Adjustments				revised
Other (income) expense		$	(566	)		$	326			$	(240	)
Income before income taxes		$	6,459			$	(326	)		$	6,133
Income tax provision		$	2,021			$	229			$	2,250
Net income		$	4,438			$	(555	)		$	3,883
Basic income per common share		$	0.42			$	(.05	)		$	0.37
Diluted income per common share		$	0.39			$	(.05	)		$	0.34


(b)	The Company initially recognized and recorded the change in the valuation of the fixed and contingent portions of the consideration contemplated in the acquisition of 3PI in its statement of operations for the three months ended June 30, 2014. The Company subsequently determined that the fixed portion of the consideration was not subject to revaluation adjustment. Accordingly, the adjustment classified in “Other (income) expense” is to eliminate the change in the valuation of the fixed portion of the consideration. Further, as described in note (a), the adjustment classified in “Income tax provision” presents the recognition of deferred income tax expense in the three months ended June 30, 2014 in connection with the change in the valuation of the contingent portion of the consideration that was recognized in the Company’s statements of operations for the period.

Description_of_the_company_and1

Description of the company and summary of significant accounting policies (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Basis of presentation	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.
Reclassification	Reclassification
Reclassification	Certain amounts recorded in the prior period consolidated financial statements presented have been reclassified to conform to the current period financial statement presentation. These reclassifications have no effect on previously reported net income.
Principles of consolidation	Principles of consolidation
Principles of consolidation	The consolidated financial statements presented herein include the accounts of Power Solutions International, Inc. and its direct and indirect wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.
Use of estimates	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. As of December 31, 2014, the Company had recognized revenue associated with approximately $3.2 million of undelivered product. The Company anticipates any unpaid balances will be collected in early 2015. The Company did not enter into any bill and hold arrangements during 2013 or 2012.
	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.
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:



		2014			2013
	Balance at beginning of year	$	452		$	408
	Charged to expense		204			160
	(Write-offs), net of recoveries		(4	)		(116	)

	Balance at end of year	$	652		$	452

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:


		2014			2013
	Raw materials	$	87,133		$	53,631
	Work in process		1,752			1,417
	Finished goods		6,777			2,448

	Total inventories	$	95,662		$	57,496
	Inventory allowance		(1,759	)		(1,510	)

	Inventories, net		93,903			55,986

	The activity in the Company’s inventory allowance as of December 31 was as follows:


		2014			2013
	Balance at beginning of year	$	1,510		$	966
	Charged to expense		679			649
	Write-offs		(430	)		(105	)

	Balance at end of year	$	1,759		$	1,510

Long-lived assets	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, 2014 and 2013.
Goodwill and other intangibles	Goodwill and other intangibles
	Goodwill represents the excess of purchase price and related costs over the values assigned to the net tangible and identifiable intangible assets of businesses acquired. In accordance with ASC 350, Intangibles —Goodwill and Other Intangibles, goodwill is not amortized, but instead is tested for impairment annually, or more frequently if circumstances indicate a possible impairment may exist. Absent any interim indicators of impairment, the Company tests for goodwill impairment on a specified date of each year, October 1.
	In accordance with ASC 350, Intangibles — Goodwill and Other Intangibles, the Company amortizes its intangible assets with finite lives using an accelerated method over their respective estimated useful lives and will review for impairment whenever impairment indicators exist. The Company’s intangible assets consist of backlog, customer relationships and trade names and trademarks.
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 liability as of December 31 was as follows:


		2014			2013
	Balance at beginning of year	$	1,274		$	690
	Acquisition on April 1, 2014		1,600			—
	Charged to expense		2,020			1,195
	Payments		(1,800	)		(611	)

	Balance at end of year	$	3,094		$	1,274

Private placement warrants	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 (income) expense” in the Company’s consolidated statements of operations. See Note 7, “Fair value of financial instruments,” for detail describing the valuation approach for the Private Placement Warrants.
Research & development and engineering costs	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 $14.9 million, $9.4 million and $6.8 million for the years ended December 31, 2014, 2013, and 2012, respectively.
Share-based compensation	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
Fair value of financial instruments	The Company’s financial instruments include accounts receivable, accounts payable, revolving line of credit, term debt 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 and term debt approximate 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, 2014, 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 approximately $159,000. The fair value of the private placement warrants is described below in Note 7, “Fair value of financial instruments.”
Self-funded insurance	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, 2014 and 2013, 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, 2014 and 2013, the Company had an unrecognized tax benefit of $740,000 and $570,000, respectively, for uncertain tax positions including interest and penalties. 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. As of December 31, 2014 and 2013, the Company maintained cash in a non-interest bearing account at a financial institution. At December 31, 2014 and 2013, cash accounts were 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 in both 2014 and 2013.
	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.
	Three customers (“Customer A”, “Customer B” and “Customer C”) individually accounted for more than 10% of the Company’s sales during one or more years from 2012 through 2014. Customer A represented 11%, 16% and 16% of consolidated net sales in 2014, 2013, and 2012, respectively. Customer B and Customer C represented 11% and 11% of consolidated net sales in 2014, respectively, and less than 10% of consolidated net sales in 2013 and 2012.
	Five customers (“Customer A, “Customer B,” “Customer C,” all referred to above, “Customer D” and “Customer E”) individually accounted for more than 10% of consolidated accounts receivable at December 31, 2014 or 2013. At December 31, 2014 and December 31, 2013, Customer A represented less than 10% of consolidated accounts receivable and 11% of consolidated accounts receivable, respectively. At December 31, 2014 and 2013, Customer B represented 14% and 13% of consolidated accounts receivable, respectively. At December 31, 2014 and 2013, Customer C represented 17% of consolidated accounts receivable and less than 10% of consolidated accounts receivable, respectively. At December 31, 2014 and 2013, Customer D represented 11% and 18% of consolidated accounts receivable, respectively. Customer E represented 11% of consolidated accounts receivable in 2014, and less than 10% of the Company’s accounts receivable in 2013.
	Three suppliers (“Supplier A,” “Supplier B” and “Supplier C”) individually accounted for more than 10% of the Company’s purchases during one or more years from 2012 through 2014. Supplier A accounted for 15%, 30% and 30% of the Company’s purchases in 2014, 2013 and 2012, respectively. Supplier B accounted for 16% of the Company’s purchases in 2012, and less than 10% of the Company’s purchases in 2014 or 2013. Supplier C accounted for 27% and 15% of the Company’s purchases in 2014 and 2013, respectively, and less than 10% of the Company’s purchases in 2012.
Earnings Per Share	The Company computes earnings (loss) per share by applying the guidance stated in ASC 260, Earnings per Share.
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.
Compensation - Stock Compensation	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 7, “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.

Description_of_the_company_and2

Description of the company and summary of significant accounting policies (Tables)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
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:



		2014			2013
	Balance at beginning of year	$	452		$	408
	Charged to expense		204			160
	(Write-offs), net of recoveries		(4	)		(116	)

	Balance at end of year	$	652		$	452

Components of Inventories	Inventories consisted of the following as of December 31:


		2014			2013
	Raw materials	$	87,133		$	53,631
	Work in process		1,752			1,417
	Finished goods		6,777			2,448

	Total inventories	$	95,662		$	57,496
	Inventory allowance		(1,759	)		(1,510	)

	Inventories, net		93,903			55,986

Summary of Inventory Reserve Activity	The activity in the Company’s inventory allowance as of December 31 was as follows:


		2014			2013
	Balance at beginning of year	$	1,510		$	966
	Charged to expense		679			649
	Write-offs		(430	)		(105	)

	Balance at end of year	$	1,759		$	1,510

Schedule of Company's Warranty Accrual	The activity in the Company’s warranty liability as of December 31 was as follows:


		2014			2013
	Balance at beginning of year	$	1,274		$	690
	Acquisition on April 1, 2014		1,600			—
	Charged to expense		2,020			1,195
	Payments		(1,800	)		(611	)

	Balance at end of year	$	3,094		$	1,274

Acquisition_of_Professional_Po1

Acquisition of Professional Power Products, Inc. (Tables)	12 Months Ended
Acquisition of Professional Power Products, Inc. (Tables)	Dec. 31, 2014
Business Combinations [Abstract]
Summary of Estimates of Fair Value of the Assets Acquired and the Liabilities Assumed as of the Acquisition Date	The purchase price for this acquisition allocated to the assets acquired and liabilities assumed based on their estimated fair values was as follows:



		April 1, 2014		Measurement			April 1, 2014
		(As initially		period			(As adjusted)
		reported)		adjustment
	Assets acquired:
	Cash	$	1,277	$	—		$	1,277
	Accounts receivable		3,989		—			3,989
	Inventories		5,073		(120	)		4,953
	Prepaid expenses and other current assets		243		—			243
	Property, plant & equipment		2,596		—			2,596

	Total tangible assets		13,178		(120	)		13,058

	Intangible assets:
	Intangible assets		23,500		—			23,500
	Goodwill		22,372		1,174			23,546

	Total assets acquired		59,050		1,054			60,104

	Liabilities assumed:
	Accounts payable		1,494		—			1,494
	Accrued liabilities		3,257		1,054			4,311

	Total liabilities assumed		4,751		1,054			5,805

	Net assets acquired	$	54,299	$	—		$	54,299

Summary of Supplemental Pro Forma Information	The following supplemental unaudited pro forma information presents the financial results as if the transaction had occurred on January 1, 2013 as follows:



		Year ended
		(unaudited)
		December 31,		December 31,
		2014		2013
	Net sales	$	353,175	$	278,117
	Net (loss) income	$	23,671	$	(16,557	)
	(Loss) earnings per share, basic	$	2.21	$	(1.69	)
	(Loss) earnings per share, diluted	$	1.57	$	(1.69	)

Earnings_per_share_Tables

Earnings per share (Tables)	12 Months Ended
Earnings per share (Tables)	Dec. 31, 2014
Earnings Per Share [Abstract]
Schedule of Computations of Basic and Diluted Earnings (Loss) Per Share	The computations of basic and diluted earnings (loss) per share as of December 31, 2014, 2013 and 2012, were as follows:


		2014			2013			2012
	Numerator:
	Net income (loss)	$	23,726		$	(18,760	)	$	6,702
	Change in the value of Private Placement Warrants		(6,169	)		—			—

		$	17,557		$	(18,760	)	$	6,702

	Denominator:
	Weighted average common shares outstanding-basic		10,706,780			9,779,457			9,068,846
	Incremental shares from assumed exercise of Private Placement Warrants, SAR, restricted stock		424,837			—			—

	Weighted average common shares outstanding-diluted		11,131,617			9,779,457			9,068,846

	Earnings (loss) per share of common stock — basic and diluted
	Earnings (loss) per share of common stock — basic	$	2.22		$	(1.92	)	$	0.74

	Earnings (loss) per share of common stock — diluted	$	1.58		$	(1.92	)	$	0.74

Property_plant_and_equipment_n1

Property, plant and equipment, net (Tables)	12 Months Ended
Property, plant and equipment, net (Tables)	Dec. 31, 2014
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:


		2014			2013
	Land	$	260		$	260
	Building and improvements		5,015			4,125
	Office furniture and equipment		3,705			2,723
	Tooling and equipment		13,736			7,595
	Transportation equipment		525			203
	Construction in progress		6,056			4,844

	Property, plant and equipment, at cost		29,297			19,750
	Accumulated depreciation		(8,405	)		(6,646	)

	Property, plant and equipment, net	$	20,892		$	13,104

Estimated Useful Lives by Major Asset Category	Estimated useful lives by major asset category are as follows:


		Life (in years)
	Building and improvements	Lesser of (i) 39 years, (ii) expected useful life of improvement or (iii) life of lease (including likely extension thereof)
	Tooling and equipment	Up to 10 years
	Office furniture and equipment	5 – 10
	Transportation equipment	3 – 5

Goodwill_and_Other_Intangibles1

Goodwill and Other Intangibles (Tables)	12 Months Ended
Goodwill and Other Intangibles (Tables)	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Other Intangible Assets	The table below shows the amortization period and intangible asset cost by intangible asset as of December 31, 2014 and the accumulated amortization and net intangible asset value in total for all those intangible assets that related to the Company’s acquisition of 3PI. Refer to Note 3, “Acquisition of Professional Power Products, Inc.” for a further discussion of this acquisition.


				2014
	Description of intangible	Amortization		Gross		Accumulated			Net
	Description of intangible	period		amount		amortization			amount
	Backlog	18 months		$	1,200	$	(1,095	)	$	105
	Customer relationships	13 years			20,600		(926	)		19,674
	Trade names and trademarks	13 years			1,700		(87	)		1,613

	Total			$	23,500	$	(2,108	)	$	21,392

Schedule of Estimated Future Amortization Expense for Intangible Assets	The table below shows the estimated future amortization expense for intangible assets:


	Year	Estimated
		amortization
		expense
	2015	$	3,362
	2016		3,031
	2017		2,566
	2018		2,260
	2019		2,044
	Thereafter		8,129

	Total	$	21,392

Fair_value_of_financial_instru1

Fair value of financial instruments (Tables)	12 Months Ended
Fair value of financial instruments (Tables)	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Estimated Fair Value of Private Placement Warrants Publicly Traded Stock Pricing Approach	As of December 31, 2014 and 2013, 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:


		2014			2013
	Market value of the Company’s common stock	$	51.61		$	75.1
	Exercise price	$	13		$	13
	Risk-free interest rate		0.39	%		0.51	%
	Estimated price volatility		55	%		42.5	%
	Contractual term		1.33 years			2.33 years
	Dividend yield		—			—
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:


		2014			2013
	Balance at beginning of year	$	24,525		$	3,666
	Fair value of private placement warrants exercised		(7,320	)		(7,172	)
	(Decrease)/increase in the value of private placement warrants		(6,169	)		28,031

	Balance at end of year	$	11,036		$	24,525

Financial Liability Measured at Fair Value on Recurring Basis	The following table summarizes fair value measurements by level as of December 31, 2014, 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		—			—		$	11,036
	The following table summarizes fair value measurement 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

Leases_Tables

Leases (Tables)	12 Months Ended
Leases (Tables)	Dec. 31, 2014
Leases [Abstract]
Future Minimum Lease Payments Due Under Operating Leases	The future minimum lease payments due under operating leases as of December 31, 2014, were as follows:



	2015	$	3,700
	2016		3,939
	2017		3,488
	2018		2,494
	2019		1,471
	Thereafter		4,259

		$	19,351

2012_Incentive_compensation_pl1

2012 Incentive compensation plan (Tables)	12 Months Ended
2012 Incentive compensation plan (Tables)	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Restricted Stock Unit Activity	Restricted stock activity consisted of the following for the year ended December 31, 2014:



		Shares			Weighted Average Grant Date
		Shares			Fair Value
	31-Dec-13		162,993		$	39.29
	Granted		23,000			71.47
	Forfeited		(12,000	)		60.44
	Vested		(19,742	)		41.89

	31-Dec-14		154,251		$	42.18

Income_taxes_Tables

Income taxes (Tables)	12 Months Ended
Income taxes (Tables)	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Summary of Expense (Benefit) for Income Taxes	The expense (benefit) for income taxes for the years ended December 31, was as follows:


		2014			2013			2012
	Current tax expense
	Federal	$	5,650		$	2,629		$	3,806
	State		1,448			955			1,053

			7,098			3,584			4,859

	Deferred tax expense (benefit)
	Federal		3,050			967			(542	)
	State		665			208			(174	)

			3,715			1,175			(716	)

	Total tax expense	$	10,813		$	4,759		$	4,143

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:


		2014						2013						2012
		Amount			Percent			Amount			Percent			Amount			Percent
	Income tax (benefit) expense at federal statutory rate	$	12,089			35	%	$	(4,760	)		34	%	$	3,687			34	%
	State income tax, net of federal benefit		1,403			4			848			(6.1	)		581			5.4
	Non-deductible private placement warrant (income)/expense		(2,159	)		(6.3	)		9,531			(68.0	)		152			1.4
	Domestic production activity		(295	)		(0.9	)		(376	)		2.7			(221	)		(2.0	)
	Research tax credits		(851	)		(2.5	)		(1,054	)		7.5			(44	)		(0.4	)
	Tax reserve reassessment		170			0.5			570			(4.1	)		—			—
	Other, net		456			1.5			—			—			(12	)		(0.2	)

	Income tax expense	$	10,813			31.3	%	$	4,759			(34.0	)%	$	4,143			38.2	%

Summary of Components of Deferred Income Tax Assets and Liabilities	Components of the deferred income tax assets and liabilities consisted of the following as of December 31:


		2014			2013
	Deferred tax assets
	Inventory	$	2,143		$	1,630
	Allowances and bad debts		280			196
	Accrued warranty		1,022			496
	Accrued wages and benefits		553			359
	Stock compensation		391			490
	Other		8			302

	Total deferred tax assets		4,397			3,473

	Deferred tax liabilities
	Intangibles		(1,810	)		—
	Tax depreciation in excess of book		(1,830	)		(966	)

	Total deferred tax liabilities		(3,640	)		(966	)

	Net deferred tax assets	$	757		$	2,507

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:


		2014			2013
	Current deferred tax assets, net	$	3,998		$	2,811
	Non-current deferred tax liabilities, net		(3,241	)		(304	)

	Net deferred tax assets	$	757		$	2,507

Schedule of Change in Unrecognized Tax Benefits	The change in unrecognized tax benefits excluding interest and penalties for the years ended December 31, 2014 and 2013 were as follows:



		2014			2013
	Balance at beginning of year	$	555		$	—
	Additions based on tax positions related to the current year		255			555
	Reductions for tax positions of prior years		(87	)		—

	Balance at end of year	$	723		$	555

Unaudited_quarterly_financial_1

Unaudited quarterly financial data (Tables)	12 Months Ended
Unaudited quarterly financial data (Tables)	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Data	Set forth below are the unaudited quarterly financial data for the fiscal years ended December 31, 2014 and 2013:



	For the quarters ended		March 31			June 30			September 30			December 31
	2014
	Net sales		$	66,735		$	83,378		$	93,972		$	103,910
	Cost of sales			54,805			67,982			75,344			82,819

	Gross profit			11,930			15,396			18,628			21,091
	Operating expenses			8,409			9,503			11,109			11,980

	Operating income			3,521			5,893			7,519			9,111
	Other (income)			(111	)		(240	)		(3,625	)		(4,519	)

	Income before income taxes			3,632			6,133			11,144			13,630
	Income tax provision			1,258			2,250			3,996			3,309

	Net income		$	2,374		$	3,883		$	7,148		$	10,321

	Net income per common share:
	Basic		$	0.23		$	0.37		$	0.66		$	0.96
	Diluted		$	0.19		$	0.34		$	0.56		$	0.48
	2013
	Net sales		$	52,576		$	59,138		$	64,628		$	61,500
	Cost of sales			43,407			47,954			52,256			49,699

	Gross profit			9,169			11,184			12,372			11,801
	Operating expenses			6,089			7,344			8,250			7,876

	Operating income			3,080			3,840			4,122			3,925
	Other expense			5,040			4,701			12,721			6,506

	(Loss) before income taxes			(1,960	)		(861	)		(8,599	)		(2,581	)
	Income tax provision			967			1,239			1,382			1,171

	Net (loss)		$	(2,927	)	$	(2,100	)	$	(9,981	)	$	(3,752	)

	Net (loss) per common share:
	Basic		$	(0.32	)	$	(0.23	)	$	(0.97	)	$	(0.36	)
	Diluted		$	(0.32	)	$	(0.23	)	$	(0.97	)	$	(0.36	)
Reconciliation of Unaudited Quarterly Financial Data	Reconciliation of unaudited quarterly financial data

	Set forth below are only those interim periods and line items that were impacted by the aforementioned matters.



			Three months ended September 30, 2014
			As previously			(a)			As
			reported			Adjustment			revised
	Income tax provision		$	2,713		$	1,283		$	3,996
	Net income		$	8,431		$	(1,283	)	$	7,148
	Basic income per common share		$	0.78		$	(.12	)	$	0.66
	Diluted income per common share		$	0.68		$	(.12	)	$	0.56


	(a)	As described above, the Company determined that the income arising from a change in the valuation of the contingent portion of the consideration recognized in the Company’s statement of operations for the three months ended September 30, 2014, required the provision of a corresponding deferred income tax liability. Accordingly, the adjustment presented reflects the recognition of deferred income tax expense in the three months ended September 30, 2014 in connection with the change in the valuation of the contingent portion of the consideration that was recognized in the Company’s statements of operations for the period.



			Three months ended June 30, 2014
			As previously			(b)			As
			reported			Adjustments			revised
	Other (income) expense		$	(566	)	$	326		$	(240	)
	Income before income taxes		$	6,459		$	(326	)	$	6,133
	Income tax provision		$	2,021		$	229		$	2,250
	Net income		$	4,438		$	(555	)	$	3,883
	Basic income per common share		$	0.42		$	(.05	)	$	0.37
	Diluted income per common share		$	0.39		$	(.05	)	$	0.34


	(b)	The Company initially recognized and recorded the change in the valuation of the fixed and contingent portions of the consideration contemplated in the acquisition of 3PI in its statement of operations for the three months ended June 30, 2014. The Company subsequently determined that the fixed portion of the consideration was not subject to revaluation adjustment. Accordingly, the adjustment classified in “Other (income) expense” is to eliminate the change in the valuation of the fixed portion of the consideration. Further, as described in note (a), the adjustment classified in “Income tax provision” presents the recognition of deferred income tax expense in the three months ended June 30, 2014 in connection with the change in the valuation of the contingent portion of the consideration that was recognized in the Company’s statements of operations for the period.

Recovered_Sheet1

Description of the Company and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Description Of Business And Significant Accounting Policies [Line Items]
Effect of reclassifications on previous reported income	$0
Recognized revenue, total	3,200,000
Research & development and engineering expenses	14,900,000	9,400,000	6,800,000
Decrease in pre-tax earnings and cash flow	159,000
Tax asset valuation allowance	0	0
Unrecognized tax benefit for uncertain tax positions, including interest and penalties	740,000	570,000
Interest-bearing accounts insured	$250,000	$250,000
Vendor A [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Purchases accounted	15.00%	30.00%	30.00%
Vendor B [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Purchases accounted	10.00%	10.00%	16.00%
Vendor C [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Purchases accounted	27.00%	15.00%	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	10.00%	11.00%
Customer B [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Consolidated accounts receivable	14.00%	13.00%
Customer C [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Consolidated accounts receivable	17.00%	10.00%
Customer D [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Consolidated accounts receivable	11.00%	18.00%
Customer B [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Consolidated accounts receivable	11.00%	10.00%
Consolidated net sales [Member] \| Customer B [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Consolidated net sales, percentage	11.00%
Consolidated net sales [Member] \| Customer C [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Consolidated net sales, percentage	11.00%
Consolidated net sales [Member] \| Customer D [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Consolidated net sales, percentage	10.00%
Consolidated net sales [Member] \| Customer A [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Consolidated net sales, percentage	11.00%	16.00%	16.00%
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
Wells Fargo Bank, N.A [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 - Activity in Company's Allowance for Doubtful Accounts (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Balance at beginning of year	$452	$408
Charged to expense	204	160
(Write-offs), net of recoveries	-4	-116
Balance at end of year	$652	$452

Recovered_Sheet3

Description of the Company and Summary of Significant Accounting Policies - Components of Inventories (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Inventory, Net [Abstract]
Raw materials	$87,133	$53,631
Work in process	1,752	1,417
Finished goods	6,777	2,448
Total inventories	95,662	57,496
Inventory allowance	-1,759	-1,510
Inventories, net	$93,903	$55,986

Description_of_the_Company_and3

Description of the Company and Summary of Significant Accounting Policies - Summary of Inventory Reserve Activity (Detail) (Inventory Valuation Reserve [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Inventory Valuation Reserve [Member]
Inventory [Line Items]
Balance at beginning of year	$1,510	$966
Charged to expense	679	649
Write-offs	-430	-105
Balance at end of year	$1,759	$1,510

Description_of_the_Company_and4

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, 2014	Dec. 31, 2013
Product Warranty Liability [Abstract]
Balance at beginning of year	$1,274	$690
Acquisition on April 1, 2014	1,600
Charged to expense	2,020	1,195
Payments	-1,800	-611
Balance at end of year	$3,094	$1,274

Acquisition_of_Professional_Po2

Acquisition of Professional Power Products, Inc. - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended			0 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Apr. 01, 2014	Jun. 28, 2013
Loans At Acquisition Date [Line Items]
Business acquisition net of cash paid									$44,122,000
Business acquisition cash acquired									-1,277,000
Common stock.shares representing fixed portion of consideration	65,772								65,772
Common stock value	5,060,000								5,060,000
Initial value of earn out portion of consideration									3,840,000
Line of credit		100,000,000
Accounts receivable gross	4,332,000								4,332,000
Accounts receivable expected to be uncollectible	343,000								343,000
Increased finished goods - inventory									34,125,000	16,667,000	7,314,000
Accrued liabilities adjusted amount												4,311,000
Deferred income tax liabilities	3,640,000				966,000				3,640,000	966,000
Income tax expense	3,309,000	3,996,000	2,250,000	1,258,000	1,171,000	1,382,000	1,239,000	967,000	10,813,000	4,759,000	4,143,000
Tax effect adjustments in additional paid-in-capital									-681,000
Change in the fair value of contingent consideration									3,840,000
Operating Income Loss	9,111,000	7,519,000	5,893,000	3,521,000	3,925,000	4,122,000	3,840,000	3,080,000	26,044,000	14,967,000	12,316,000
Amortization expense									2,147,000	40,000	31,000
Level 3 [Member]
Loans At Acquisition Date [Line Items]
Estimated fair value of contingent consideration liability	0								0
Contingent Consideration Classified as Equity [Member]
Loans At Acquisition Date [Line Items]
Earn-out consideration, common stock shares									131,544
Additional Paid-in Capital [Member]
Loans At Acquisition Date [Line Items]
Tax effect adjustments in additional paid-in-capital									-681,000
Professional Power Products Inc ("PPPI") [Member]
Loans At Acquisition Date [Line Items]
Business acquisition net of cash paid												45,400,000
Business acquisition cash acquired												1,300,000
Earn-out consideration minimum payable value												5,000,000
Earn-out consideration maximum payable value												15,000,000
Common stock issued, price per share												$76.02
Earn-out consideration value												8,900,000
Earn-out consideration initial purchase price												54,300,000
Increased finished goods - inventory									482,000
Deferred income tax liabilities	1,570,000				681,000				1,570,000	681,000
Income tax expense									1,570,000
Goodwill, expected tax deductible amount	18,000,000								18,000,000
Estimated fair value of contingent consideration liability												8,900,000
Net Intercompany sales									20,400,000
Operating Income Loss									2,000,000
Amortization expense									2,108,000
Acquisition transaction expenses									3,474,000	0
Professional Power Products Inc ("PPPI") [Member] \| Additional Paid-in Capital [Member]
Loans At Acquisition Date [Line Items]
Tax effect adjustments in additional paid-in-capital									681,000
Wells Fargo Bank, N.A [Member]
Loans At Acquisition Date [Line Items]
Line of credit												5,000,000
Securing term loan												5,000,000
General and Administrative Expense [Member]
Loans At Acquisition Date [Line Items]
Total transaction cost related to acquisition	811,000								811,000
Adjustments [Member]
Loans At Acquisition Date [Line Items]
Reversal of liability									3,840,000
Accrued liabilities adjusted amount												1,054,000
Income tax expense		1,283,000	229,000
Adjustments [Member] \| Professional Power Products Inc ("PPPI") [Member]
Loans At Acquisition Date [Line Items]
Increased finished goods - inventory												120,000
Accrued liabilities adjusted amount												1,054,000
Minimum [Member] \| Contingent Consideration Classified as Equity [Member]
Loans At Acquisition Date [Line Items]
Earn-out consideration, common stock shares									65,772
Minimum [Member] \| Professional Power Products Inc ("PPPI") [Member]
Loans At Acquisition Date [Line Items]
Earn-out consideration, common stock shares												65,772
Minimum [Member] \| Wells Fargo Bank, N.A [Member]
Loans At Acquisition Date [Line Items]
Line of credit													75,000,000
Maximum [Member] \| Contingent Consideration Classified as Equity [Member]
Loans At Acquisition Date [Line Items]
Earn-out consideration, common stock shares									197,316
Maximum [Member] \| Professional Power Products Inc ("PPPI") [Member]
Loans At Acquisition Date [Line Items]
Earn-out consideration, common stock shares												197,316
Maximum [Member] \| Wells Fargo Bank, N.A [Member]
Loans At Acquisition Date [Line Items]
Line of credit													$100,000,000

Acquisition_of_Professional_Po3

Acquisition of Professional Power Products, Inc. - Summary of Estimates of Fair Value of the Assets Acquired and the Liabilities Assumed as of the Acquisition Date (Detail) (USD $)	Dec. 31, 2014	Apr. 01, 2014
Assets acquired:
Cash		$1,277,000
Accounts receivable		3,989,000
Inventories		4,953,000
Prepaid expenses and other current assets		243,000
Property, plant & equipment		2,596,000
Total tangible assets		13,058,000
Intangible assets:
Intangible assets		23,500,000
Goodwill	23,546,000	23,546,000
Total assets acquired		60,104,000
Liabilities assumed:
Accounts payable		1,494,000
Accrued liabilities		4,311,000
Total liabilities assumed		5,805,000
Net assets acquired		54,299,000
As Previously Reported [Member]
Assets acquired:
Cash		1,277,000
Accounts receivable		3,989,000
Inventories		5,073,000
Prepaid expenses and other current assets		243,000
Property, plant & equipment		2,596,000
Total tangible assets		13,178,000
Intangible assets:
Intangible assets		23,500,000
Goodwill		22,372,000
Total assets acquired		59,050,000
Liabilities assumed:
Accounts payable		1,494,000
Accrued liabilities		3,257,000
Total liabilities assumed		4,751,000
Net assets acquired		54,299,000
Adjustments [Member]
Assets acquired:
Inventories		-120,000
Total tangible assets		-120,000
Intangible assets:
Goodwill		1,174,000
Total assets acquired		1,054,000
Liabilities assumed:
Accrued liabilities		1,054,000
Total liabilities assumed		$1,054,000

Acquisition_of_Professional_Po4

Acquisition of Professional Power Products, Inc. - Summary of Supplemental Pro Forma Information (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Business Combination Increase Decrease To Reflect Liabilities Acquired At Fair Value [Abstract]
Net sales	$353,175	$278,117
Net (loss) income	$23,671	($16,557)
(Loss) earnings per share, basic	$2.21	($1.69)
(Loss) earnings per share, diluted	$1.57	($1.69)

Earnings_Per_Share_Schedule_of

Earnings Per Share - Schedule of Computations of Basic and Diluted Earnings (Loss) Per Share (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Numerator:
Net income (loss)	$10,321	$7,148	$3,883	$2,374	($3,752)	($9,981)	($2,100)	($2,927)	$23,726	($18,760)	$6,702
Change in the value of Private Placement Warrants									-6,169	28,031	448
Net income (loss) Attributable to Parent									$17,557	($18,760)	$6,702
Earnings (loss) per share of common stock - basic and diluted
Earnings (loss) per share of common stock - basic	$0.96	$0.66	$0.37	$0.23	($0.36)	($0.97)	($0.23)	($0.32)
Earnings (loss) per share of common stock - diluted	$0.48	$0.56	$0.34	$0.19	($0.36)	($0.97)	($0.23)	($0.32)
Common Shares [Member]
Denominator:
Weighted average common shares outstanding-basic									10,706,780	9,779,457	9,068,846
Incremental shares from assumed exercise of Private Placement Warrants, SAR, restricted stock									424,837
Weighted average common shares outstanding-diluted									11,131,617	9,779,457	9,068,846
Earnings (loss) per share of common stock - basic and diluted
Earnings (loss) per share of common stock - basic									$2.22	($1.92)	$0.74
Earnings (loss) per share of common stock - diluted									$1.58	($1.92)	$0.74

Earnings_Per_Share_Additional_

Earnings Per Share - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Class of Warrant or Right [Line Items]
Exercise price per share			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
Private Placement Warrants [Member]
Class of Warrant or Right [Line Items]
Shares issued for warrants exercised	109,585	339,410	13,750

Recovered_Sheet4

Property, Plant and Equipment, Net - Components of Property, Plant and Equipment (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Abstract]
Land	$260	$260
Building and improvements	5,015	4,125
Office furniture and equipment	3,705	2,723
Tooling and equipment	13,736	7,595
Transportation equipment	525	203
Construction in progress	6,056	4,844
Property, plant and equipment, at cost	29,297	19,750
Accumulated depreciation	-8,405	-6,646
Property, plant and equipment, net	$20,892	$13,104

Recovered_Sheet5

Property, Plant and Equipment, Net - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property Plant and Equipment Useful Life and Values [Abstract]
Depreciation expense	$2,562,000	$1,528,000	$1,074,000

Property_Plant_and_Equipment_N2

Property, Plant and Equipment, Net - Estimated Useful Lives by Major Asset Category (Detail)	12 Months Ended
	Dec. 31, 2014
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life, description	Lesser of (i) 39 years, (ii) expected useful life of improvement or (iii) 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

Goodwill_and_Other_Intangibles2

Goodwill and Other Intangibles - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended
	Oct. 01, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Apr. 01, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill		$23,546,000			$23,546,000
Goodwill impairment	0
Amortization expense		$2,147,000	$40,000	$31,000
Weighted average useful life of intangible assets acquired		13 years

Goodwill_and_Other_Intangibles3

Goodwill and Other Intangibles - Schedule of Other Intangible Assets (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$23,500
Accumulated Amortization	-2,108
Net Carrying Amount	21,392
Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Backlog	18 months
Gross Carrying Amount	1,200
Accumulated Amortization	-1,095
Net Carrying Amount	105
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Backlog	13 years
Gross Carrying Amount	20,600
Accumulated Amortization	-926
Net Carrying Amount	19,674
Trade Names and Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Backlog	13 years
Gross Carrying Amount	1,700
Accumulated Amortization	-87
Net Carrying Amount	$1,613

Goodwill_and_Other_Intangibles4

Goodwill and Other Intangibles - Summary of Estimated Future Amortization Expense for Intangible Assets (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
2015	$3,362
2016	3,031
2017	2,566
2018	2,260
2019	2,044
Thereafter	8,129
Net Carrying Amount	$21,392

Recovered_Sheet6

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	0 Months Ended	12 Months Ended
	Jun. 06, 2012	Dec. 31, 2014	Apr. 29, 2011	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Risk-free interest rate	0.92%
Estimated price volatility	55.00%
Dividend yield		0.00%
Private Placement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Market value of the Company's common stock		51.61		$75.10
Exercise price		13		$13
Risk-free interest rate		0.39%		0.51%
Estimated price volatility		55.00%	50.00%	42.50%
Contractual term		1 year 3 months 29 days		2 years 3 months 29 days
Dividend yield		0.00%	0.00%	0.00%

Recovered_Sheet7

Fair Value of Financial Instruments - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Private placement warrant (income) expense	($6,169,000)	$28,031,000	$448,000
Private Placement Warrants [Member] \| Black-Scholes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Estimated price volatility percentage		10.00%
Estimated fair value	$100,000

Fair_Value_of_Financial_Instru2

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, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
(Decrease)/increase in the value of private placement warrants	($6,169)	$28,031	$448
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance at beginning of year	24,525	3,666
Fair value of private placement warrants exercised	-7,320	-7,172
(Decrease)/increase in the value of private placement warrants	-6,169	28,031
Balance at end of year	$11,036	$24,525

Fair_Value_of_Financial_Instru3

Fair Value of Financial Instruments - Financial Liability Measured at Fair Value on Recurring Basis (Detail) (Level 3 [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Private placement warrants liability	$11,036	$24,525	$3,666
Private Placement Warrants [Member]
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Private placement warrants liability	$11,036	$24,525

Recovered_Sheet8

Revolving Line of Credit and term debt - Additional Information (Detail) (USD $)	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Apr. 01, 2014	Jun. 28, 2013	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013	Feb. 11, 2015
Line of Credit Facility [Line Items]
Agreement provides for borrowings under a revolving line of credit					$100,000,000
Outstanding borrowings under its revolving line of credit	71,000,000			71,000,000		9,000,000
Line of Credit bears interest at BMO Bank's LIBOR rate	1.66%			1.66%		1.67%
Remaining outstanding balance	7,000,000			7,000,000		8,900,000
Percentage of applicable margin interest rate	3.25%			3.25%		3.25%
Unused and available line of credit balance	21,200,000			21,200,000		47,900,000
Principal payment due in 2015	1,667,000			1,667,000
Principal payment due in 2016	1,667,000			1,667,000
Principal payment due in 2017	694,000			694,000
Subsequent Event [Member]
Line of Credit Facility [Line Items]
Agreement provides for borrowings under a revolving line of credit							125,000,000
Term Loan B Debt [Member]
Line of Credit Facility [Line Items]
Line of credit, interest at LIBOR	4.67%
Line of credit, LIBOR	LIBOR plus 4.50%
Outstanding borrowings under its revolving line of credit	4,028,000			4,028,000
Wells Fargo Bank, N.A [Member]
Line of Credit Facility [Line Items]
Agreement provides for borrowings under a revolving line of credit		5,000,000
Percentage of revolving unused line fee		0.25%
Long term borrowings		5,000,000
Minimum [Member] \| Wells Fargo Bank, N.A [Member]
Line of Credit Facility [Line Items]
Agreement provides for borrowings under a revolving line of credit			75,000,000
Applicable margin, during the period		0.00%	0.00%
Line of credit, interest at LIBOR		1.50%	1.50%
Line of credit facility covenants minimum fixed charge coverage ratio			1
Maximum [Member] \| Wells Fargo Bank, N.A [Member]
Line of Credit Facility [Line Items]
Agreement provides for borrowings under a revolving line of credit			100,000,000
Applicable margin, during the period		0.50%	0.50%
Line of credit, interest at LIBOR		2.00%	2.00%
Percentage of revolving unused line fee			0.25%
Consecutive days of liquidity threshold			60 days
Liquidity threshold			9,375,000
Percent of total credit facility			12.50%
London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Line of credit, interest at LIBOR	450.00%
Amended Wells Credit Agreement I [Member]
Line of Credit Facility [Line Items]
Line of credit, interest at LIBOR		450.00%		17.00%
Amortization period		36 months
Line of credit facility covenants maximum debt leverage ratio				4
Line of credit, LIBOR		LIBOR plus 4.50%
Amended Wells Credit Agreement I [Member] \| Term Loan B Debt [Member]
Line of Credit Facility [Line Items]
Long term borrowings		5,000,000
Amended Wells Credit Agreement I [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Line of credit facility covenants minimum fixed charge coverage ratio				1.2
Amended Wells Credit Agreement I [Member] \| Minimum [Member] \| Wells Fargo Bank, N.A [Member]
Line of Credit Facility [Line Items]
Agreement provides for borrowings under a revolving line of credit		75,000,000
Amended Wells Credit Agreement I [Member] \| Maximum [Member] \| Wells Fargo Bank, N.A [Member]
Line of Credit Facility [Line Items]
Agreement provides for borrowings under a revolving line of credit		$90,000,000

Leases_Additional_Information_

Leases - Additional Information (Detail) (USD $)	12 Months Ended
Leases - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Leases [Abstract]
Rent expense under operating lease	$3,314,000	$2,693,000	$2,454,000

Leases_Future_Minimum_Lease_Pa

Leases - Future Minimum Lease Payments Due Under Operating Leases (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified	Dec. 31, 2014
Leases [Abstract]
2015	$3,700
2016	3,939
2017	3,488
2018	2,494
2019	1,471
Thereafter	4,259
Total Operating Lease	$19,351

Recovered_Sheet9

2012 Incentive Compensation Plan - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended
	Jun. 06, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jul. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock repurchased by the company, shares		830,925	830,925
Shares authorized for stock-based compensation		65,772
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		Commenced after the SAR Grant Date and prior to the 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%
Service period		1 year 9 months 11 days
Expenses for the SAR granted		329,000	907,000	478,000
Total unrecognized compensation expense		86,000
Expected period of recognition of cost		6 months
Employee Stock Option 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
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.
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term to exceed public equivalent value over aggregate exercise price		$22.07
Stock Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock repurchased by the company, shares		830,925
Common stock available for issuance					700,000
Stock Compensation Plan [Member] \| 2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for stock-based compensation		1,530,925
Common stock available for further issuance		801,060
SAR [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of SAR granted		$3.31
SAR [Member] \| Chief Operating Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted to employees	543,872
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares granted to employees		185,993
Fair value of SAR granted		$71.47
Expected period of recognition of cost		7 years
Restricted stock activity, amount			0
Restricted stock activity, shares granted			162,993
Compensation expenses		925,000	361,000	0
Fair value of restricted stock vested		1,408,000
Restricted Stock [Member] \| 2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense		$5,995,000
Restricted Stock [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for restricted stock		10 years

Recovered_Sheet10

2012 Incentive Compensation Plan - Summary of Restricted Stock Unit Activity (Detail) (Restricted Stock [Member], USD $)	12 Months Ended
	Dec. 31, 2014
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, shares	162,993
Granted, shares	23,000
Forfeited, shares	-12,000
Vested, shares	-19,742
Ending balance, shares	154,251
Weighted average grant date fair value, beginning balance	$39.29
Granted, weighted average grant date fair value	$71.47
Forfeited, weighted average grant date fair value	$60.44
Vested, weighted average grant date fair value	$41.89
Weighted average grant date fair value, ending balance	$42.18

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended								12 Months Ended			0 Months Ended
	Jun. 06, 2012	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 06, 2014	Aug. 15, 2013	Oct. 31, 2011	Apr. 29, 2011	Jul. 16, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized		50,000,000				50,000,000				50,000,000	50,000,000
Common stock exercise price		$0.00				$0.00				$0.00	$0.00
Common stock, shares issued		11,562,209				11,352,812				11,562,209	11,352,812
Common stock, shares outstanding		10,731,284				10,521,887				10,731,284	10,521,887
Series A convertible preferred stock, shares authorized		114,000				114,000				114,000	114,000
Series A convertible preferred stock, par value		$0.00				$0.00				$0.00	$0.00
Series A convertible preferred stock, shares issued		0				0				0	0
Series A convertible preferred stock, shares outstanding		0				0				0	0
Income tax benefit		$3,309,000	$3,996,000	$2,250,000	$1,258,000	$1,171,000	$1,382,000	$1,239,000	$967,000	$10,813,000	$4,759,000	$4,143,000
Shares issued withheld to satisfy income tax obligation, Value										430,000	2,063,000
Income tax benefit realized in connection with exercise of stock appreciation right										2,704,000	1,642,000
Estimated fair value																2,887,000
Volatility factor	55.00%
Dividend yield										0.00%
Common stock repurchased by the company, shares		830,925				830,925				830,925	830,925
Common stock repurchased by the company, value		4,250,000				4,250,000				4,250,000	4,250,000
Proceeds to the company from public offering											36,750,000
Proceeds from sale of shares										0
SAR [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grantee exercised Stock appreciation right										120,000				181,291
Stock appreciation right shares vested													181,291
Total shares issued													85,903
Income tax benefit										2,427,000
Unexercised shares vested under Stock appreciation right		61,291								61,291
Shares issued withheld to satisfy income tax obligation														42,314
Shares issued withheld to satisfy income tax obligation, Value														2,063,000
Common stock issued														96,504
Income tax benefit realized in connection with exercise of stock appreciation right														1,642,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued withheld to satisfy income tax obligation, Value										430,000
Common stock issued										13,909
Income tax benefit realized in connection with exercise of stock appreciation right										277,000
Series A Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Series A convertible preferred stock, shares authorized		114,000								114,000
Series A convertible preferred stock, par value		$0.00								$0.00
Series A convertible preferred stock, shares issued		0				0				0	0
Series A convertible preferred stock, shares outstanding		0				0				0	0
Stock Purchase Agreement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock repurchased by the company, shares															830,925
Common stock repurchased by the company, value															4,250,000
Common stock repurchased by the company, per share value															$5.11
Private Placement [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants expiry date										29-Apr-16
Volatility factor										55.00%	42.50%					50.00%
Risk-free interest rate																2.10%
Dividend yield										0.00%	0.00%					0.00%
Private placement warrants term										5 years
Exercise price per share		$13				$13				$13	$13
Underwritten public offering price per share		$51.61				$75.10				$51.61	$75.10
Underwritten Public Offering [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Public offering shares																	2,005,000
Underwritten public offering price per share																	$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																	34,530,000
Public offering expense																	$514,000
Private Placement Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock exercise price		$13								$13
Shares of common stock issuable upon exercise of the private placement warrant										750,002
Shares issued for warrants exercised										109,585	339,410	13,750
Common stock reserved for the exercise of the Private Placement Warrants		287,257				396,842				287,257	396,842

Income_Taxes_Summary_of_Expens

Income Taxes - Summary of Expense (Benefit) for Income Taxes (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current tax expense
Federal									$5,650	$2,629	$3,806
State									1,448	955	1,053
Current tax expense, Gross									7,098	3,584	4,859
Deferred tax expense (benefit)
Federal									3,050	967	-542
State									665	208	-174
Deferred tax expense (benefit), Gross									3,715	1,175	-716
Income tax expense	$3,309	$3,996	$2,250	$1,258	$1,171	$1,382	$1,239	$967	$10,813	$4,759	$4,143

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 $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Income tax (benefit) expense at federal statutory rate									$12,089	($4,760)	$3,687
State income tax, net of federal benefit									1,403	848	581
Non-deductible private placement warrant (income)/expense									-2,159	9,531	152
Domestic production activity									-295	-376	-221
Research tax credits									-851	-1,054	-44
Tax reserve reassessment									170	570
Other, net									456		-12
Income tax expense	$3,309	$3,996	$2,250	$1,258	$1,171	$1,382	$1,239	$967	$10,813	$4,759	$4,143
Income tax (benefit) expense at federal statutory rate									35.00%	34.00%	34.00%
State income tax, net of federal benefit									4.00%	-6.10%	5.40%
Non-deductible private placement warrant (income)/expense									-6.30%	-68.00%	1.40%
Domestic production activity									-0.90%	2.70%	-2.00%
Research tax credits									-2.50%	7.50%	-0.40%
Tax reserve reassessment									0.50%	-4.10%
Other, net									1.50%		-0.20%
Income tax expense									31.30%	-34.00%	38.20%

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended
Income Taxes - Additional Information (Detail) (USD $)	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Pre-tax income	$13,630,000	$11,144,000	$6,133,000	$3,632,000	($2,581,000)	($8,599,000)	($861,000)	($1,960,000)	$34,539,000	($14,001,000)	$10,845,000
Excludable expenses included in pre-tax loss									6,169,000	28,031,000	448,000
Pre-tax income (loss)									28,370,000	14,030,000	11,293,000
Effective tax rate excluding private placement warrants expenses									38.10%	33.90%	36.70%
Federal research tax credit					641,000					641,000	413,000
Tax credit carryforward expiration period									20 years
Possible decrease in unrecognized tax benefits									$100,000

Income_Taxes_Summary_of_Compon

Income Taxes - Summary of Components of Deferred Income Tax Assets and Liabilities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Inventory	$2,143	$1,630
Allowances and bad debts	280	196
Accrued warranty	1,022	496
Accrued wages and benefits	553	359
Stock compensation	391	490
Other	8	302
Total deferred tax assets	4,397	3,473
Intangibles	-1,810
Tax depreciation in excess of book	-1,830	-966
Total deferred tax liabilities	-3,640	-966
Net deferred tax assets	$757	$2,507

Income_Taxes_Schedule_of_Net_D

Income Taxes - Schedule of Net Deferred Tax Assets and Liabilities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Current deferred tax assets, net	$3,998	$2,811
Non-current deferred tax liabilities, net	-3,241	-304
Net deferred tax assets	$757	$2,507

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, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Balance at beginning of year	$555
Additions based on tax positions related to the current year	255	555
Reductions for tax positions of prior years	-87
Balance at end of year	$723	$555

Defined_Contribution_Plan_Addi

Defined Contribution Plan - Additional Information (Detail) (Professional Power Products Inc ("PPPI") [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Professional Power Products Inc ("PPPI") [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined benefit plan discretionary contributions	$0	$0	$0
Defined benefit plan matching contributions	$91,000

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
December 7, 2012 Agreement [Member]
Commitment And Contingencies [Line Items]
Commitment towards investments in joint venture	$1,200,000
Contribution to joint venture	850,000	500,000
December 9, 2014 Agreement [Member]
Commitment And Contingencies [Line Items]
Commitment towards investments in joint venture	$1,000,000

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)	0 Months Ended		12 Months Ended
	Aug. 26, 2013	Aug. 05, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Related Party Transactions [Abstract]
Cash payments to third party	$3,000,000	$3,750,000	$2,500,000
Cash payment from related party	3,000,000	3,750,000	2,500,000
Fee and other consulting service expenses			$62,000	$127,000	$125,000

Recovered_Sheet11

Unaudited Quarterly Financial Data - Schedule of Quarterly Financial Data (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Data [Abstract]
Net sales	$103,910	$93,972	$83,378	$66,735	$61,500	$64,628	$59,138	$52,576	$347,995	$237,842	$202,342
Cost of sales	82,819	75,344	67,982	54,805	49,699	52,256	47,954	43,407	280,950	193,316	168,425
Gross profit	21,091	18,628	15,396	11,930	11,801	12,372	11,184	9,169	67,045	44,526	33,917
Operating expenses	11,980	11,109	9,503	8,409	7,876	8,250	7,344	6,089	41,001	29,559	21,601
Operating income	9,111	7,519	5,893	3,521	3,925	4,122	3,840	3,080	26,044	14,967	12,316
Other (income) expense	-4,519	-3,625	-240	-111	6,506	12,721	4,701	5,040	-183	-10
Income (loss) before income taxes	13,630	11,144	6,133	3,632	-2,581	-8,599	-861	-1,960	34,539	-14,001	10,845
Income tax provision	3,309	3,996	2,250	1,258	1,171	1,382	1,239	967	10,813	4,759	4,143
Net income (loss)	$10,321	$7,148	$3,883	$2,374	($3,752)	($9,981)	($2,100)	($2,927)	$23,726	($18,760)	$6,702
Net income (loss) per common share:
Basic	$0.96	$0.66	$0.37	$0.23	($0.36)	($0.97)	($0.23)	($0.32)
Diluted	$0.48	$0.56	$0.34	$0.19	($0.36)	($0.97)	($0.23)	($0.32)

Recovered_Sheet12

Unaudited Quarterly Financial Data - Additional Information (Detail) (Professional Power Products Inc ("PPPI") [Member], USD $)	0 Months Ended
	Apr. 01, 2014	Dec. 31, 2014	Apr. 01, 2014
Professional Power Products Inc ("PPPI") [Member]
Quarterly Financial Data [Line Items]
Earn-out consideration liability	$8,900,000		$8,900,000
Earn-out consideration classified as equity		5,100,000
Earn-out consideration value	$8,900,000

Unaudited_Quarterly_Financial_2

Unaudited Quarterly Financial Data - Reconciliation of Unaudited Quarterly Financial Data (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other (income) expense									$8,495	($28,968)	($1,471)
Income before income taxes	13,630	11,144	6,133	3,632	-2,581	-8,599	-861	-1,960	34,539	-14,001	10,845
Income tax provision	3,309	3,996	2,250	1,258	1,171	1,382	1,239	967	10,813	4,759	4,143
Net income	10,321	7,148	3,883	2,374	-3,752	-9,981	-2,100	-2,927	23,726	-18,760	6,702
Basic income per common share	$0.96	$0.66	$0.37	$0.23	($0.36)	($0.97)	($0.23)	($0.32)
Diluted income per common share	$0.48	$0.56	$0.34	$0.19	($0.36)	($0.97)	($0.23)	($0.32)
As Previously Reported [Member]
Other (income) expense			-566
Income before income taxes			6,459
Income tax provision		2,713	2,021
Net income		8,431	4,438
Basic income per common share		$0.78	$0.42
Diluted income per common share		$0.68	$0.39
Adjustments [Member]
Other (income) expense			326
Income before income taxes			-326
Income tax provision		1,283	229
Net income		-1,283	-555
Basic income per common share		($0.12)	($0.05)
Diluted income per common share		($0.12)	($0.05)
Revised [Member]
Other (income) expense			-240
Income before income taxes			6,133
Income tax provision		3,996	2,250
Net income		$7,148	$3,883
Basic income per common share		$0.66	$0.37
Diluted income per common share		$0.56	$0.34