Quantum Fuel Systems Technologies Worldwide (QTWW) 10-Q 10 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Aug. 06, 2015
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Trading Symbol	QTWW
Entity Registrant Name	QUANTUM FUEL SYSTEMS TECHNOLOGIES WORLDWIDE, INC.
Entity Central Index Key	1,166,380
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		28,022,802

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 5,389,000	$ 4,103,841
Accounts receivable, net	10,210,112	11,626,467
Inventories, net	10,112,633	8,872,704
Prepaid and other current assets	1,736,067	1,261,953
Assets of discontinued operations held for sale	2,054,870	1,049,603
Total current assets	29,502,682	26,914,568
Property and equipment, net	9,631,203	9,762,341
Restricted assets held in escrow	2,000,000	1,500,000
Goodwill	12,400,000	12,400,000
Deposits and other assets	332,542	487,209
Assets of discontinued operations held for sale	19,911,588	22,112,396
Total assets	71,778,015	71,676,514
Current liabilities:
Accounts payable	6,596,620	9,313,192
Accrued payroll obligations	1,145,282	1,263,257
Deferred revenue	1,062,075	2,990,908
Accrued warranties	1,482,681	611,999
Other accrued liabilities (Note 12)	297,490	1,017,340
Debt obligations, current portion	4,549,464	5,177,207
Liabilities of discontinued operations held for sale	1,772,914	1,550,164
Total current liabilities	16,906,526	21,924,067
Debt obligations, net of current portion	9,697,494	7,053,195
Deferred Credits and Other Liabilities	0
Liabilities of discontinued operations held for sale	$ 17,505,480	$ 19,094,320
Commitments and contingencies (Note 12)
Stockholders’ Equity (Note 9):
Additional paid-in-capital	$ 560,456	$ 465,525
Accumulated deficit	524,790,493	514,065,280
Accumulated other comprehensive loss in discontinued operations	(497,014,092)	(490,426,307)
Accumulated other comprehensive loss in discontinued operations	(668,342)	(499,566)
Total stockholders’ equity	27,668,515	23,604,932
Total liabilities and stockholders’ equity	$ 71,778,015	$ 71,676,514

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Common stock, par value	$ 0.02	$ 0.02
Common stock, shares authorized	50,000,000	50,000,000
Common Stock, Shares, Issued	28,090,052	23,310,721
Common stock, shares outstanding	28,022,802	23,276,264
Common stock, treasury	67,250	34,457

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Net Income (Loss) Available to Common Stockholders, Basic	$ (3,246,156)	$ (2,234,137)	$ (6,587,785)	$ (5,436,370)
Revenue:
Revenue	10,683,707	6,530,048	19,881,821	14,484,921
Costs and expenses:
Cost of revenues	9,154,039	5,173,266	17,215,253	10,706,008
Gross margin	1,529,668	1,356,782	2,666,568	3,778,913
Research and development	2,049,901	1,654,291	3,928,794	3,154,512
Selling, general and administrative	2,355,074	2,529,905	4,823,367	5,085,360
Total costs and expenses	4,404,975	4,184,196	8,752,161	8,239,872
Operating loss	(2,875,307)	(2,827,414)	(6,085,593)	(4,460,959)
Interest expense, net	(427,371)	(459,126)	(841,517)	(1,235,247)
Fair value adjustments of derivative instruments, net	3,000	2,723,784	0	1,983,864
Other expenses (Note 12)	0	(1,765,000)	0	(1,765,000)
Loss from continuing operations before income taxes	(3,299,678)	(2,327,756)	(6,927,110)	(5,477,342)
Income tax expense	0	0	0	(1,600)
Loss from continuing operations	(3,299,678)	(2,327,756)	(6,927,110)	(5,478,942)
Loss from discontinued operations, net of taxes	53,522	93,619	339,325	42,572
Net loss attributable to stockholders	$ (3,246,156)	$ (2,234,137)	$ (6,587,785)	$ (5,436,370)
Per share data-basic and diluted:
Loss from continuing operations	$ (0.12)	$ (0.10)	$ (0.26)	$ (0.25)
Loss from discontinued operations	0	0	0.01	0
Net loss attributable to stockholders	$ (0.12)	$ (0.10)	$ (0.25)	$ (0.25)
Weighted average shares outstanding:
Basic and diluted	27,909,428	22,876,458	26,648,181	21,517,808
Comprehensive loss:
Net loss attributable to stockholders	$ (3,246,156)	$ (2,234,137)	$ (6,587,785)	$ (5,436,370)
Reclassification of accumulated foreign currency translation in connection with disposal of discontinued operations, net of tax	56,688	108,383	(168,776)	(4,169)
Comprehensive loss attributable to stockholders	$ (3,189,468)	$ (2,125,754)	$ (6,756,561)	$ (5,440,539)

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Cash Flows [Abstract]
Net loss	$ (3,246,156)	$ (2,234,137)	$ (6,587,785)	$ (5,436,370)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation on property and equipment			856,349	641,843
Impairment of assets of discontinued operations held for sale			0	434,768
Share-based compensation charges			349,769	217,159
Fair value adjustments of derivative instruments			0	(1,983,864)
Interest on debt obligations			917,702	797,052
Provision for bad debt			0	(89,876)
Inventory obsolescence			(8,307)	282,728
Changes in operating assets and liabilities:
Accounts receivable			1,488,421	1,966,455
Inventories			(1,231,622)	(1,543,238)
Other assets			(237,824)	(889,184)
Accounts payable			(2,858,171)	(2,999,465)
Deferred revenue and other accrued liabilities			(1,803,922)	224,719
Net cash used in operating activities			(9,115,390)	(8,377,273)
Cash flows from investing activities:
Purchases and development of property and equipment			(725,211)	(4,554,081)
Net cash used in investing activities			(725,211)	(4,554,081)
Cash flows from financing activities:
Repayments of long-term obligations			11,500,000	16,620,375
Common stock and warrant issuance costs			(942,073)	(1,356,824)
Proceeds from exercise of warrants			5,375	5,114,599
Borrowings on capital lease arrangement			0	316,038
Payments on capital leases			(516,289)	(412,575)
Payments on debt obligations			(257,522)	(4,109,916)
Proceeds from issuance of debt and warrants			2,000,000	0
Taxes Paid In Lieu of Shares Issued for Share Based Compensation			(92,927)	0
Other			(44,936)	(22,573)
Net cash provided by financing activities			11,651,628	16,149,124
Net effect of exchange rate changes on cash	(31,119)			(2,117)
Net increase in cash and cash equivalents		3,215,653	1,779,908
Cash and cash equivalents at beginning of period			4,495,886	7,031,981
Cash and cash equivalents at end of period	6,275,794	10,247,634	6,275,794	10,247,634
Cash and cash equivalents at end of period:
Continuing operations	5,389,000	9,178,948
Discontinued operations	886,794	1,068,686
Cash and cash equivalents at end of period	$ 6,275,794	$ 10,247,634	$ 4,495,886	$ 7,031,981

Background and Basis of Present

Background and Basis of Presentation	6 Months Ended
	Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Background and Basis of Presentation	Background and Basis of Presentation Quantum Fuel Systems Technologies Worldwide, Inc. (collectively referred to as “Quantum,” “we,” “our” or “us”) is a leader in the innovation, development and production of compressed natural gas (CNG) fuel storage systems and the integration of vehicle system technologies including engine and vehicle control systems and drivetrains. We were formed as a Delaware corporation in October 2000, and became a publicly traded company on July 23, 2002. Our common stock trades on The NASDAQ Capital Market under the symbol “QTWW.” Our headquarters and principal operations are located in Lake Forest, California. We classify our business operations into three reporting segments: Fuel Storage & Systems, Renewable Energy and Corporate. The Renewable Energy business segment, consisting entirely of the operations of Schneider Power Inc. (Schneider Power), is classified as discontinued operations as discussed further below. • Fuel Storage & Systems. Our Fuel Storage & Systems segment generates revenues from three sources: product sales, contract engineering services, and software licensing fees. Product sales are derived primarily from the sale of CNG storage tanks and packaged CNG fuel storage modules and systems for a variety of heavy, medium and light-duty trucks and passenger vehicles. This segment produces advanced light-weight CNG storage tanks and supplies these tanks, in addition to fully-integrated CNG storage modules and systems, to truck and automotive original equipment manufacturers (OEMs), fleets, dealerships and aftermarket and OEM truck integrators. Our high-pressure CNG and hydrogen storage tanks use advanced composite technology and are capable of storage at up to 10,000 pounds per square inch (psi). Contract engineering services revenue is generated by providing engineering design and support to OEMs and other customers specializing in natural gas products and material science, governmental agencies and other customers, so that our fuel systems and advanced propulsion systems integrate and operate with our customers CNG, hybrid or fuel cell applications. For hybrid and plug-in electric vehicle (PHEV) applications, we provide powertrain engineering, electronic control, software strategies and system integration. We also design, engineer and manufacture refueling systems and dispensers. Software licensing fees consists of our plug-in hybrid control software that we license to Fisker Automotive Group (Fisker) under an agreement that was executed in October 2014. • Renewable Energy. Our Renewable Energy segment consists solely of the business operations of our wholly-owned subsidiary, Schneider Power. Schneider Power, a Canadian corporation, is an independent wind power producer and holder of interests in certain renewable energy projects. We committed to a plan to sell the assets and operations of Schneider Power in 2012. To date, we have completed the sale of certain assets of Schneider Power and are actively pursuing the sale of all of the remaining Schneider Power assets. As a result of these actions and our expectations for a completion of the sale or other disposition of the remaining assets and operations within the next year, we report the historical activities and balances of Schneider Power as discontinued operations held for sale (Note 2). • Corporate. The Corporate segment consists solely of general and administrative expenses incurred at the corporate level that are not directly attributable to the Fuel Storage & Systems or Renewable Energy business segments. Corporate expenses consist primarily of personnel costs, share-based compensation costs and related general and administrative costs for executive, finance, legal, human resources, investor relations, and our board of directors. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America, or GAAP, for interim financial reporting. In the opinion of management, all adjustments considered necessary for a fair presentation have been included. These adjustments consist of normal and recurring accruals, as well as non-recurring charges. The condensed consolidated financial statements include the accounts of Quantum Fuel Systems Technologies Worldwide, Inc., and Schneider Power. These interim financial statements should be read in conjunction with the consolidated financial statements and footnotes included in our Annual Report on Form 10-K for the year ended December 31, 2014 filed with the SEC on March 16, 2015, and all of our other filings, including Current Reports on Form 8-K, filed with the SEC after such date and through the date of this report. All significant intercompany accounts and transactions have been eliminated in consolidation. Certain reclassifications have been made to the historical amounts to conform to the presentation of the current period. In preparing the unaudited condensed consolidated financial statements, we have evaluated subsequent events. For purposes of these condensed consolidated financial statements, subsequent events are those events that occurred after the most recent balance sheet date presented but before the condensed consolidated financial statements are issued or available to be issued. We prepare our unaudited consolidated financial statements in conformity with GAAP, which requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting period. These estimates include assessing our liquidity needs over a reasonable period of time, collectability of accounts receivable, estimates of contract costs and percentage of completion, the use and recoverability of the carrying amounts and fair value of assets held for sale, long-lived assets, investments and goodwill, including estimates of future cash flows and market valuations associated with asset impairment evaluations, the fair value of derivatives associated with warrants, the realization of deferred taxes, useful lives for depreciation and amortization periods of assets and provisions for warranty claims, among others. The markets for our products are characterized by competition, technological development and new product introduction, all of which could impact the future realizability of our assets. The results for interim periods are not necessarily indicative of results that may be expected for any other interim period or for the full year. Liquidity Our historical operating results, capital resources and financial position, in combination with current projections and estimates, were considered in management's plan and intentions to fund our operations over a reasonable period of time, which we define in this report as the twelve month period subsequent to the filing date of this report. For purposes of liquidity disclosures, we assess the likelihood that we have sufficient available working capital and other principal sources of liquidity to fund our operating activities and obligations as they become due and the likelihood that we will be able to maintain compliance with the required provisions contained within our debt instruments over said twelve month period. We expect to fund our business over the next year principally from our existing levels of working capital, the availability under our amended line of credit, and if needed, additional capital raised from private and/or public equity or debt offerings. Based on current assumptions and estimates, we believe that it may be necessary to raise additional capital over the next twelve months to cover our existing operations and obligations. The actual amount of capital that we may have to raise, if any, is dependent upon (i) our ability to meet our current operating plan, (ii) the timing of cash collections on existing receivables from AGI and its affiliates, which had a combined balance remaining of $1.9 million at June 30, 2015, (iii) the amount of cash collected under the software license agreement we have with Fisker, particularly as it relates to whether Fisker meets its scheduled payment obligations and exercises its option to acquire joint-ownership of the software in exchange for additional consideration, and (iv) the success of our efforts to monetize the remaining assets of Schneider Power over the next year. Our ability to raise additional equity or debt capital sufficient to fund our planned operations, if and when needed, is dependent upon a number of factors some of which are outside of our control including, without limitation, the markets view generally of the natural gas transportation industry, our ability to obtain the consent of third parties, our stock price, and the number of authorized shares we have available for future issuance. Notwithstanding these restrictive factors, we believe that we will be able to raise a sufficient level of additional capital over the next twelve months, if necessary, to meet all of our obligations as they become due and continue to execute on our business plan initiatives; however, we cannot provide any assurances that we will be able to secure additional funding on terms acceptable to us, if at all. Our inability to achieve our current operating plan or raise capital to cover any shortfall would have a material adverse affect on our ability to meet our obligations as they become due without substantial disposition of assets or other similar actions outside the normal course of business. Recent Accounting Pronouncements In July 2015, the Financial Accounting Standards Board (“FASB”) issued new guidance on simplifying the measurement of inventory. The guidance requires that an entity measure inventory at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. The guidance is effective for fiscal years beginning after December 15, 2016. We do not expect the adoption of this guidance to have a material impact on our consolidated financial statements. In April 2015, the FASB issued guidance on simplifying the presentation of debt issuance costs. The update requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of the related debt liability instead of being presented as an asset. Debt disclosures will include the face amount of the debt liability and the effective interest rate. The update requires retrospective application and represents a change in accounting principle. The guidance is effective beginning in the first quarter of 2016. Early adoption is permitted for financial statements that have not been previously issued. We are evaluating the impact of the guidance on our consolidated financial statements.

Discontinued Operations

Discontinued Operations	6 Months Ended
	Jun. 30, 2015
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations-Schneider Power	Discontinued Operations Our Renewable Energy segment consists solely of the business operations of Schneider Power. Since August 2012, we have been actively pursuing the sale of the assets and operations of Schneider Power. On May 13, 2013, we completed the sale of Schneider Power’s 1.6 MW Providence Bay wind farm. On May 29, 2013, we entered into definitive agreements for the sale of the 10.0 MW Trout Creek development project, which sale will occur in two phases. The closing for the first phase, which resulted in the sale of a majority interest in the Trout Creek wind farm project, occurred on September 18, 2013. The sale of the remaining interest in the Trout Creek wind farm project is expected to be completed in early 2016, subject to the project achieving commercial operation. We are also actively pursuing the sale of other Schneider Power assets, including the 10.0 MW Zephyr wind farm operating asset that was acquired by Schneider Power in April 2012 and which represents a substantial portion of the remaining assets and liabilities of Schneider Power. As a result of these actions and our expectations for a completion of a sale of the business within the next year, we report the historical activities and balances of Schneider Power as discontinued operations. Operating Results and Balances The unaudited historical operating results of Schneider Power, classified as discontinued operations, are as follows: Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 Revenue $ 489,307 $ 603,370 $ 1,166,891 $ 1,501,828 Costs and expenses: Cost of sales 142,059 146,300 273,576 295,049 Selling, general and administrative 19,262 45,288 9,224 99,211 Impairment of long-lived assets (1) — — — 434,768 Total costs and expenses 161,321 191,588 282,800 829,028 Operating income 327,986 411,782 884,091 672,800 Interest expense, net (274,464 ) (318,163 ) (544,766 ) (630,712 ) Other, net — — — 484 Income from discontinued operations, net of taxes $ 53,522 $ 93,619 $ 339,325 $ 42,572 (1) We measure each disposal group of Schneider Power at the lower of its carrying amount or fair value less costs to sell. The fair value measurements are based on available Level 3 inputs such as market conditions and pending agreements to sell the assets. Based on assessments that we updated during the first quarter in 2014, we determined that the carrying value of goodwill was below its fair value and recognized a goodwill impairment charge of $0.4 million. The unaudited condensed balance sheets of Schneider Power, classified as discontinued operations held for sale, are as follows: June 30, December 31, Current Assets: Cash and cash equivalents $ 886,794 $ 392,045 Accounts receivable, net 136,063 221,943 Prepaid and other current assets (1) 1,032,013 435,615 Total current assets $ 2,054,870 $ 1,049,603 Non-Current Assets: Property and equipment, net (2) $ 18,847,736 $ 20,190,824 Intangible asset, net (3) 946,722 1,014,185 Goodwill 2,046 2,191 Deposits and other assets (1) 115,084 905,196 Total non-current assets $ 19,911,588 $ 22,112,396 Current Liabilities: Accounts payable $ 116,876 $ 275,628 Other accrued liabilities 185,491 101,015 Current portion of debt obligations (4) 1,470,547 1,173,521 Total current liabilities $ 1,772,914 $ 1,550,164 Non-Current Liabilities: Debt obligations, net of current portion (4) $ 17,505,480 $ 19,094,320 Total non-current liabilities $ 17,505,480 $ 19,094,320 (1) The fair value of contingent consideration associated with the sale of the Trout Creek wind farm is included in current assets in the 2015 period and in non-current assets in the 2014 period. (2) Consists mainly of wind turbine assets of the 10.0 megawatt Zephyr Wind Farm. (3) Consists of project assets associated with Schneider Power's renewable energy portfolio and power purchase agreements associated with the Zephyr Wind Farm. (4) Consists of a credit facility due to a secured project lender in connection with the acquisition of the Zephyr Wind Farm as discussed below. Zephyr Wind Farm - Samsung Debt In connection with Schneider Power's acquisition of Zephyr and its 10 MW wind farm in April 2012, Schneider Power assumed a CAD $22.7 million credit facility owed to Samsung Heavy Industries Co. Ltd. related to the project (Samsung Debt). The significant terms of the Samsung Debt, as most recently amended on January 26, 2015, are as follows: (i) scheduled maturity of January 31, 2023, (ii) interest at 6.5% per year, (iii) nineteen semi-annual payments of principal and interest in the approximate amount of CAD $1.1 million commencing on January 31, 2014 (except as modified for a deferred interest payment discussed below), (iv) a principal balloon payment in the approximate amount of CAD $2.6 million on each of January 31, 2018 and July 31, 2018, (v) a principal balloon payment in the approximate amount of CAD $5.6 million on July 31, 2022, and (vi) a final payment in the approximate amount of CAD $5.1 million on January 31, 2023. On January 8, 2015, Schneider Power and Zephyr notified Samsung of their assertion that Samsung was in default of its obligations under a Turbine Supply Agreement and an Operations and Maintenance Agreement. Following this notification and initial discussions, Schneider Power and Zephyr entered into a First Amendment to Master Amendment Agreement on January 26, 2015, pursuant to which the parties agreed to defer until January 31, 2016 CAD $462,167 of interest owed to Samsung under the Master Amendment Agreement that was originally scheduled to be paid on January 31, 2015. We expect that discussions between the parties will continue in an effort to seek a potential resolution of the issues under the Turbine Supply Agreement and Operations and Maintenance Agreement which caused Schneider Power and Zephyr to provide the default notice to Samsung. As of June 30, 2015, the total amount of the Samsung Debt was CAD $23.6 million , which consisted of CAD $21.8 million of principal, CAD $0.7 million of unamortized premium and CAD $1.1 million of accrued interest. The amounts due under the Samsung Debt are secured by substantially all of Zephyr’s assets and a pledge of all of the shares of Zephyr held by Schneider Power. Quantum has no obligation to service the debt payments and has not provided any guarantees associated with the Samsung Debt. The conversion rate of one CAD to one US Dollar was 0.80 to 1.0 as of June 30, 2015 and 0.86 to 1.0 as of December 31, 2014.

Accounts Receivable

Accounts Receivable	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Accounts Receivable	Accounts Receivable Net accounts receivable of continuing operations consist of the following: June 30, December 31, Customer accounts billed $ 9,365,748 $ 11,120,593 Customer accounts unbilled 1,135,591 797,518 Allowance for doubtful accounts (291,227 ) (291,644 ) Accounts receivable, net $ 10,210,112 $ 11,626,467 We assess the collectability of receivables associated with our customers on an ongoing basis and, historically, any losses have been within management’s expectations. As of June 30, 2015 and December 31, 2014, amounts due from Advanced Green Innovations, LLC and its subsidiaries, which includes ZHRO Solutions LLC (collectively “AGI”) were $1.9 million and $2.8 million , respectively. Based on payment activity since December 31, 2014, repayment arrangements that were amended on June 26, 2015, and communications and feedback we continue to have with executives of AGI, we believe the remaining amounts outstanding are fully realizable. As such, we have not recorded a specific allowance against the AGI receivable; however, we will continue to assess the collectability on an ongoing basis.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2015
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories of continuing operations consist of the following: June 30, December 31, Materials and parts $ 12,452,060 $ 10,383,269 Work-in-process 93,605 389,155 Finished goods 1,504,406 2,046,025 14,050,071 12,818,449 Less: Provision for obsolescence (3,937,438 ) (3,945,745 ) Inventories, net $ 10,112,633 $ 8,872,704

Long-lived Assets

Long-lived Assets	6 Months Ended
	Jun. 30, 2015
Property, Plant and Equipment [Abstract]
Long-lived Assets	Long-lived Assets Property and equipment Changes in property and equipment of continuing operations for the six months ended June 30, 2015 were as follows: Balance at January 1, 2015 Additions Transfers Depreciation Balance at Property and equipment in service, gross $ 39,290,495 $ — $ 859,400 $ — $ 40,149,895 Accumulated depreciation (31,270,855 ) — — (856,349 ) (32,127,204 ) Construction in progress: Plant equipment and other 1,742,701 725,211 (859,400 ) — 1,608,512 Total property and equipment, net $ 9,762,341 $ 725,211 $ — $ (856,349 ) $ 9,631,203 Goodwill The carrying amount of goodwill of continuing operations reported in our Fuel Storage & Systems business segment was $12.4 million at both June 30, 2015 and December 31, 2014 . Indicators of Impairment We believe that no event or circumstance currently exists that would indicate a potential impairment of the carrying values of property and equipment, goodwill, or any other significant long-lived operating asset as of June 30, 2015 .

Debt Obligations

Debt Obligations	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Debt Obligations	Debt Obligations Our debt obligations for continuing operations consist of the following: June 30, December 31, Obligations to Secured Lenders: Convertible Notes: $12,475,000 principal, $374,191 accrued interest, net of unamortized discount of $4,187,099 at June 30, 2015; $10,475,000 principal, $269,441 accrued interest, net of unamortized discount of $4,628,439 at December 31, 2014 $ 8,662,092 $ 6,116,002 Capital lease obligation: $1,059,945 principal and $9,581 accrued interest at June 30, 2015; $1,576,234 principal and $15,703 accrued interest at December 31, 2014 1,069,526 1,591,937 Line of Credit: $4,500,000 principal and $9,531 accrued interest at June 30, 2015; $4,500,000 principal and $9,218 accrued interest at December 31, 2014 4,509,531 4,509,218 Obligations to Other Creditors: Other obligations 5,809 13,245 Debt obligations of continuing operations, current and non-current 14,246,958 12,230,402 Less: Current portion of long-term debt, net of unamortized discount (4,549,464 ) (5,177,207 ) Debt obligations of continuing operations, non-current $ 9,697,494 $ 7,053,195 Convertible Notes On September 18, 2013, we received gross proceeds of $11,000,000 in connection with the closing of a private placement of 2.0% secured convertible promissory notes (September 2013 Convertible Notes) and warrants to purchase up to 3,411,235 shares of our common stock (September 2013 Warrants). Net proceeds from the transaction, after placement agent fees and other transaction costs, were $10,420,898 . The lead investor has the right to appoint one member to our board of directors for as long as the lead investor beneficially owns at least 5.0% of our common stock. Effective October 24, 2013, Mr. Timothy McGaw, who also participated in the offering and purchased $50,000 of the September 2013 Convertible Notes, was appointed by the lead investor and currently serves on our board of directors. Certain of our executives and board of directors (Related Parties) also participated in the offering, including W. Brian Olson, our Chief Executive Officer and Bradley Timon, our Chief Financial Officer. On June 30, 2015, we received additional gross proceeds of $2,000,000 in connection with a private placement offering of new convertible notes (June 2015 Convertible Notes) that have the same terms as the September 2013 Convertible Notes, as amended by the parties in connection with the issuance of the June 2015 Convertible Notes. The lead investor from the September 2013 transaction participated in the June 2015 transaction and purchased $1,500,000 of the June 2015 Convertible Notes. The September 2013 Convertible Notes and the June 2015 Convertible Notes are collectively referred to herein as the "Convertible Notes." The significant terms of the Convertible Notes are as follows: (i) scheduled maturity date of September 17, 2018, provided, however, during the 30-day period beginning on July 1, 2017 and upon notice provided by the holders of a majority of the outstanding principal amount of the Convertible Notes, the holders have the option to require us to redeem the principal and interest then outstanding under the Convertible Notes within 90 days thereafter (the original terms of the September 2013 notes were changed from September 18, 2016 to July 1, 2017 pursuant to the June 29, 2015 amendment), (ii) interest accrues at 2.0% per annum, payable upon the earlier of conversion or maturity, (iii) the outstanding principal under the Convertible Notes is convertible into shares of our common stock at a fixed conversion price of $2.3824 per share, subject to customary anti-dilution provisions, at any time until maturity at the option of the Convertible Note holders, (iv) we have the right to pay the accrued interest in cash or stock (if we elect to pay in stock, then the number of shares to be issued in payment of the interest will be based on the conversion price), and (v) the Convertible Notes are subject to redemption in connection with a change in control transaction. We determined that the issuance of the June 2015 Convertible Notes and the amendment to change the date of the put right contained in the September 2013 Convertible Notes described above did not represent a substantial modification to the September 2013 Convertible Notes. The unamortized debt discounts and deferred debt fees related to the outstanding September 2013 Convertible Notes did not change as a result of the June 29, 2015 amendment and will continue to be amortized through the date of the expected maturity of September 17, 2018. Our obligations under the Convertible Notes are secured by a second lien on substantially all of the operating assets used in our continuing operations and provide for an event of default if our common stock is not listed on NASDAQ or another national securities exchange as well as other customary events of default. In connection with the issuance of the September 2013 Convertible Notes, we filed a resale registration statement covering the shares of common stock issuable upon conversion of the September 2013 Convertible Notes and exercise of the September 2013 Warrants, which became effective on December 23, 2013. We agreed to pay the holders of the September 2013 Convertible Notes and September 2013 Warrants liquidated damages not to exceed 12% of the gross proceeds received by us if, under certain circumstances, the registration statement is suspended or no longer effective. To date, $525,000 of principal of the September 2013 Convertible Notes has been converted into 220,364 shares of our common stock. At June 30, 2015, the total amount of principal and interest due to Related Parties under the September 2013 Convertible Notes was $491,968 , which consisted of $475,000 of principal and $16,968 of accrued interest. Capital Lease Obligation On November 6, 2012, we entered into an equipment sale and leaseback financing arrangement that provided us with access to a total of $3,250,000 to finance the acquisition of certain equipment to be employed in our continuing operations. The arrangement calls for payments of $111,846 on or before the fifteenth of each month through October 15, 2015 and a final payment of $691,846 on November 6, 2015. During the first half of 2015, we made total payments of $671,073 , of which $154,784 represented the implied interest cost. The lease obligation is secured by the equipment that is acquired under the arrangement. The following table sets forth the total minimum lease payments under the capital lease arrangement for equipment along with the present value of the net minimum lease payments as of June 30, 2015 : 2015 minimum lease payments $ 1,139,228 Less: Amount representing interest (79,283 ) Capital lease obligation $ 1,059,945 Line of Credit At December 31, 2014, the significant terms of our revolving line of credit (Line of Credit) with Bridge Bank, National Association (Bank) consisted of the following: (i) scheduled maturity date of March 14, 2016 , (ii) variable interest rate at the greater of 3.75% or the bank’s prime rate, plus 0.50% , (iii) annual facility fee of $50,000 , (iv) a covenant to maintain at least $1.5 million of cash and cash equivalents with the Bank at all times through maturity, and (v) maximum borrowing capacity dependent upon our levels of eligible accounts receivables and inventories. On February 10, 2015, we and the Bank entered into a Third Loan and Security Modification Agreement pursuant to which, among other things, (i) the Line of Credit was increased from $5.0 million to $7.5 million , (ii) the amount of inventory eligible to be included in the borrowing base is limited to $2.0 million , (iii) a fee of 0.15% per annum, payable quarterly in arrears, is charged on the average unused portion of the Line of Credit, and (iv) for any period that the outstanding advances on the Line of Credit exceeds $5.0 million, then the amount of cash and cash equivalents that we are required to maintain with the Bank increases from $1.5 million to $2.0 million . The interest rate on the credit facility, which is a variable rate at the greater of 3.75% or Bridge Bank's prime rate plus 0.5% , did not change as a result of the Third Amendment. As of June 30, 2015 and December 31, 2014, we had $4.5 million of outstanding borrowings. As of June 30, 2015, the maximum availability for additional borrowings under the Line of Credit was $2.2 million . The Bank has a senior secured first position on substantially all of the assets used in our continuing operations, other than certain equipment acquired under the capital lease arrangement described above. Collateral and Covenants We were in compliance with all existing covenants and other requirements of our debt instruments as of June 30, 2015 . Debt Maturities The following table sets forth the scheduled maturities of our long term debt obligations and accrued interest of our continuing operations for each of the following years until maturity: Twelve Months Ending June 30, Debt Maturities Amortization of Discount Net Maturities of Debt Obligations 2016 $ 5,584,866 $ (1,035,402 ) $ 4,549,464 2017 — (1,253,311 ) (1,253,311 ) 2018 — (1,521,462 ) (1,521,462 ) 2019 (1) 12,849,191 (376,924 ) 12,472,267 $ 18,434,057 $ (4,187,099 ) $ 14,246,958 (1) Represents debt obligations under the Convertible Notes that are scheduled to mature in September 2018 and assumes that the put option effective on July 1, 2017 is not exercised by the note holders.

Warranties

Warranties	6 Months Ended
	Jun. 30, 2015
Product Warranties Disclosures [Abstract]
Warranties	Warranties We offer a warranty for production level storage systems, tanks, component parts and other alternative fuel products shipped to our customers. The specific terms and conditions of those warranties vary depending on the customer requirements; however, our fully integrated CNG systems are generally sold with a warranty of two years or 200,000 miles, whichever comes first. We estimate the costs that may be incurred under our warranty provisions and record a liability in the amount of such costs at the time product revenue is recognized. Factors that affect our warranty liability include the number of units sold, historical and anticipated rates of warranty claims, and cost per claim. Although we engineered our first generation back-of-cab module system with structural stiffness in order for it to be durable, we spent considerable time and resources during the second quarter of 2015 designing product enhancements and performing retrofits on an initial set of targeted first generation back-of-cab module systems to add a certain amount of structural flexibility to better align the system harmonics, or movements, of our system to the movement patterns of the truck chassis. We recognized $0.3 million in warranty settlements related to the retrofits completed during the second quarter of 2015 and we set aside additional warranty reserves of $0.7 million as of June 30, 2015 for the estimated cost of retrofit activities that we expect to complete on additional first generation systems in future periods. We generally disclaim all warranties on our prototype component parts and systems. At our discretion or under certain programs, we may provide for the replacement cost or perform additional tests of prototype component parts subsequent to product delivery. We include an estimate of these types of arrangements as part of our warranty liability. We periodically assess the adequacy of our recorded warranty liabilities and adjust the amounts as necessary. Changes in our product warranty liability for continuing operations are as follows: Balance at January 1, 2015 $ 611,999 Warranties issued and reserves added during the period 1,400,949 Settlements made during the period (530,267 ) Balance at June 30, 2015 $ 1,482,681

Derivative Instruments and Fair

Derivative Instruments and Fair Value Measurements	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Fair Value Measurements	Derivative Instruments and Fair Value Measurements We measure our financial assets and liabilities in accordance with Fair Value Measurements and Disclosures under GAAP, which maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. We determined the fair values of the derivative instrument liabilities associated with certain warrant contracts primarily based on an option-pricing mathematical model referred to as “Black-Scholes”. This model determines the value of the derivative instruments based on complex mathematical formulas that assume that returns on our underlying stock are normally-distributed and that risk-free interest rates and stock volatilities will remain constant over the term of the contract. The following table summarizes the changes in the fair value for the derivative instrument liabilities during the first six months of 2015: January 2013 Warrants Balance at January 1, 2015 $ 7,000 Fair value adjustments 3,000 Balance at March 31, 2015 $ 10,000 Fair value adjustments (3,000 ) Balance at June 30, 2015 $ 7,000 The fair value for derivative instrument liabilities is recorded as "Other accrued liabilities" in the condensed consolidated balance sheets. The fair values of the warrants issued on August 25, 2008 and February 18, 2011 were zero as of June 30, 2015 and December 31, 2014.

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 2015
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Stockholders’ Equity Authorized Shares Under our Restated Certificate of Incorporation, the number of shares of capital stock we are authorized to issue consists of 50,000,000 shares of common stock, $ 0.02 par value, and 20,000,000 shares of preferred stock, $ 0.001 par value. Stock Incentive Plans On October 27, 2011, our stockholders approved our 2011 Stock Incentive Plan (2011 Plan). The 2011 Plan replaced our 2002 Stock Incentive Plan (2002 Plan) and awards can no longer be issued under the 2002 Plan; however, awards issued under the 2002 Plan prior to its termination remain outstanding in accordance with their terms. Both stock incentive plans provide that awards of stock options and shares of restricted stock may be granted to directors, employees and consultants. The terms of the awards are established by the administrator of the plans, our Compensation Committee. The stock options generally expire ten years after the date of grant or 30 days after termination of employment, vest ratably at a rate of 25% on each of the first four anniversaries of the grant date and have an exercise price at least equal to the market price of our stock on the date of grant. Outstanding restricted stock awards typically vest at a rate of 33.33% on each of the first three anniversaries of the grant date or cliff vest on the third anniversary of the grant date. The 2011 Plan initially provided for an aggregate of 775,000 shares available for grant, subject to adjustment in the event of a stock split, stock dividend, or other similar change in our common stock or our capital structure. The 2011 Plan contains an “evergreen” provision under which beginning on January 1, 2013, the number of shares available for grant under the 2011 Plan increases annually by an amount equal to the lesser of (x) 125,000 shares, (y) 3.0% of the number of shares outstanding as of such first day of each year or (z) a lesser number of shares determined by our Board of Directors. On May 21, 2015, a total of 20,200 shares of restricted stock were granted to members of our Board of Directors and on June 11, 2015, a total of 156,850 shares of restricted stock and 53,650 stock options were granted to our employees. Our closing share price on the dates of the grant awards were $2.97 and $2.69, respectively. As of June 30, 2015 , after including the effects of grants, forfeitures and the evergreen provision, we had 106,478 shares available for issuance under the 2011 Plan. Stock Options Below is a summary of the options activity: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (In Years) Options outstanding at January 1, 2015 455,850 $ 8.60 Granted 53,650 $ 2.69 Exercised (2,281 ) $ 2.36 Forfeited (8,563 ) $ 2.26 Expired (3,445 ) $ 53.44 Options outstanding at June 30, 2015 495,211 $ 8.68 9.05 Vested and expected to vest at June 30, 2015 465,176 $ 8.08 8.09 Options exercisable at June 30, 2015 281,476 $ 15.53 7.03 Share-based Compensation The share-based compensation expense related to stock options and restricted stock of continuing operations included in the accompanying condensed consolidated statements of operations and in the financial information by reportable business segment in Note 11 is: Fuel Storage & Systems Corporate Total Three Months Ended June 30, 2015 Cost of product sales $ 2,676 $ — $ 2,676 Research and development 54,808 — 54,808 Selling, general and administrative 8,271 112,097 120,368 Total share-based compensation $ 65,755 $ 112,097 $ 177,852 Three Months Ended June 30, 2014 Cost of product sales $ 7,090 $ — $ 7,090 Research and development 33,941 — 33,941 Selling, general and administrative 7,104 78,668 85,772 Total share-based compensation $ 48,135 $ 78,668 $ 126,803 Six Months Ended June 30, 2015 Cost of product sales $ 5,544 $ — $ 5,544 Research and development 108,138 — 108,138 Selling, general and administrative 17,197 218,890 236,087 Total share-based compensation $ 130,879 $ 218,890 $ 349,769 Six Months Ended June 30, 2014 Cost of product sales $ 14,698 $ — $ 14,698 Research and development 52,372 — 52,372 Selling, general and administrative 11,726 138,363 150,089 Total share-based compensation $ 78,796 $ 138,363 $ 217,159 Warrants A summary of warrant activity and warrants outstanding, reportable in the equivalent number of shares of our common stock that can be purchased upon exercise of the warrants, is as follows: Warrants outstanding at January 1, 2015 8,327,405 Expired (54,996 ) Warrants outstanding at June 30, 2015 8,272,409 A summary of our outstanding warrants as of June 30, 2015 is as follows: Issue Date Expiration Date Shares Subject to Outstanding Warrants Exercise Price at End of Period References August 25, 2008 August 25, 2015 349,741 $ 154.40 (a) April 30, 2010 through July 1, 2010 July 1, 2015 477 $ 72.80 October 13, 2010 and October 19, 2010 October 13, 2015 and October 19, 2015 9,037 $ 53.60 February 18, 2011 February 18, 2016 189,836 $ 26.28 February 18, 2011; Series “B” February 18, 2016 98,481 $ 24.00 (a) June 15, 2011 June 15, 2016 361,458 $ 15.40 June 15, 2011 June 15, 2018 11,250 $ 12.48 June 15, 2011 June 15, 2018 30,064 $ 15.40 June 20, 2011 June 20, 2016 14,269 $ 15.60 June 20, 2011 June 20, 2018 31 $ 15.60 July 6, 2011 July 6, 2016 104,929 $ 15.40 August 23, 2011 August 23, 2016 28,750 $ 15.40 September 29, 2011 September 29, 2016 4,782 $ 3.32 October 12, 2011 October 12, 2016 115,314 $ 3.32 October 17, 2011 through October 21, 2011 October 17, 2016 through October 21, 2016 19,138 $ 10.56 December 21, 2011 December 21, 2016 819,851 $ 4.88 January 19, 2012 January 19, 2017 33,187 $ 4.88 March 20, 2012; Series “B” March 21, 2017 1,311,000 $ 4.08 March 21, 2012; Series “B” March 21, 2017 735,900 $ 4.08 May 3, 2012; Series “B” March 21, 2017 27,612 $ 4.08 June 14, 2012; Series “B” March 21, 2017 51,112 $ 4.08 May 8, 2012 May 7, 2019 50,000 $ 3.60 June 22, 2012 and June 28, 2012 June 22, 2017 and June 28, 2017 572,860 $ 3.40 July 25, 2012 July 25, 2017 34,888 $ 3.56 January 24, 2013 July 25, 2018 11,250 $ 2.84 (a) September 18, 2013 March 18, 2019 3,287,192 $ 2.30 Total warrants outstanding at June 30, 2015 8,272,409 None of the outstanding warrant contracts contain exercise price reset provisions. (a) The warrants issued on August 25, 2008, February 18, 2011 (Series “B”) and January 24, 2013 contain contractual provisions that could potentially require us to net-cash settle the value of the remaining outstanding warrants in the event of a change in control or other fundamental change. Since the contractual provisions that could require us to net-cash settle the warrants are deemed not to be within our control under applicable accounting guidance, equity classification is precluded. As such, we consider these warrants to be derivative instruments that are classified as current derivative liabilities at fair value on the dates of the condensed consolidated balance sheets presented. A summary of the changes in the fair values marked to market during the periods presented on the condensed consolidated statements of operations are disclosed in Note 8. Shares Available The number of authorized shares available for future issuance as of June 30, 2015 is as follows: Common Stock Preferred Stock Shares Authorized 50,000,000 20,000,000 Less shares issued and outstanding at June 30, 2015 (28,022,802 ) — Less shares designated as of June 30, 2015 for issuance under: Stock options (1) (601,689 ) — Warrants outstanding (8,272,409 ) — Conversion of principal under convertible notes (2) (5,236,312 ) — Undesignated shares available 7,866,788 20,000,000 (1) Includes all of the options outstanding plus 106,478 shares remaining that are available for issuance under the 2011 Plan. (2) Represents the number of shares issuable upon conversion of $12.5 million of principal maturing on September 18, 2018 under the Convertible Notes at a fixed conversion price of $2.3824 per share. Stockholders’ Equity Roll-forward The following table provides a condensed roll-forward of stockholders’ equity for the six months ended June 30, 2015 : Common Shares Outstanding Total Equity Balance at January 1, 2015 23,276,264 $ 23,604,932 Share-based compensation 144,257 256,842 Issuance of common stock to investors (1) 4,600,000 10,557,927 Issuance of common stock in connection with stock option exercises 2,281 5,375 Foreign currency translation — (168,776 ) Net loss — (6,587,785 ) Balance at June 30, 2015 28,022,802 $ 27,668,515 (1) On February 18, 2015, we completed an underwritten offering of 4,600,000 shares of common stock, $0.02 par value per share. The number of shares sold in the offering includes the underwriter’s full exercise of the over-allotment option to purchase an additional 600,000 shares of common stock. The net proceeds we received, net of underwriting discounts and other estimated offering expenses, were approximately $10.6 million .

Earnings (Loss) Per Share

Earnings (Loss) Per Share	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	Earnings (Loss) Per Share We compute net income (loss) per share by dividing the net income (loss) for the period by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per share is computed by dividing the net income (loss) for the period by the weighted average number of common and common equivalent shares outstanding during the period. We consider common equivalent shares from the exercise of stock options, warrants and conversion of debt in the instance where the shares are dilutive to net income (loss). The following table sets forth the computation of basic and diluted earnings (loss) per share: Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 Numerators for basic and diluted loss per share data: Loss from continuing operations $ (3,299,678 ) $ (2,327,756 ) $ (6,927,110 ) $ (5,478,942 ) Income from discontinued operations, net of taxes 53,522 93,619 339,325 42,572 Net loss $ (3,246,156 ) $ (2,234,137 ) $ (6,587,785 ) $ (5,436,370 ) Denominator for basic and diluted loss per share data—weighted-average shares 27,909,428 22,876,458 26,648,181 21,517,808 Basic and diluted per share data: Loss from continuing operations $ (0.12 ) $ (0.10 ) $ (0.26 ) $ (0.25 ) Income from discontinued operations — — 0.01 — Net loss $ (0.12 ) $ (0.10 ) $ (0.25 ) $ (0.25 ) For the three and six month periods ended June 30, 2015 and 2014 , shares of common stock potentially issuable upon the exercise of options and warrants and from the potential conversion of debt were excluded in the computation of diluted per share data, as the effects would be anti-dilutive.

Business Segments and Geographi

Business Segments and Geographic Information	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Business Segments and Geographic Information	Business Segments and Geographic Information Business Segments We classify our business into three reporting segments: Fuel Storage & Systems, Renewable Energy and Corporate. Due to our plan to dispose of Schneider Power within the next 12 months , the Renewable Energy business segment, consisting entirely of the operations of Schneider Power, is classified as discontinued operations (see Note 2). The chief operating decision maker allocates resources and tracks performance by the reporting segments. We evaluate performance based on profit or loss from operations before interest, non-operating income and expenses, and income taxes. Fuel Storage & Systems Segment Our Fuel Storage & Systems segment is a leader in the development and production of CNG fuel storage systems and the integration of alternative fuel vehicle system technologies including engine and vehicle control systems and drivetrains. This segment designs and manufactures advanced light-weight CNG storage tanks and supplies these tanks, in addition to fully-integrated CNG fuel systems, to truck and automotive OEMs and aftermarket OEM truck integrators. These high-pressure CNG and hydrogen storage tanks use advanced composite technology and are capable of storage at up to 10,000 psi. This segment's powertrain engineering, system integration, vehicle manufacturing, and assembly capabilities provides fast-to-market solutions to support the integration and production of natural gas fuel and storage systems, hybrid, fuel cell, and specialty vehicles, as well as modular, transportable hydrogen refueling stations. This segment generates revenue from three sources: product sales, contract engineering services and software licensing fees. Product sales are derived primarily from the sale of storage tanks and packaged fuel system modules for CNG applications. Contract services revenue is generated by providing engineering design and support to OEMs and other customers, so that our fuel systems and advanced propulsion systems integrate and operate with our customers' CNG, hybrid or fuel cell applications. Contract engineering services revenue is also generated from customers in the aerospace industry, material science, and other governmental entities and agencies. Software licensing fees consists of our plug-in hybrid control software that we license to Fisker in connection with an agreement that was executed in October 2014 to support Fisker’s re-launch of the Karma vehicle line and Fisker's advancement of its Atlantic vehicle line. The software licensing fees, which amounted to $1,291,418 and $1,899,875 in the second quarter and first six months of 2015, respectively, are included as part of engineering services & licensing fees revenue on the selected financial information of continuing operations that follows. We expense all research and development when incurred. We will continue to require significant research and development expenditures over the next several years in order to increase the commercialization of our products for natural gas, hybrid, hydrogen fuel cell and other alternative fuel applications. Corporate Segment The Corporate segment consists of general and administrative expenses incurred at the corporate level that are not directly attributable to the Fuel Storage & Systems or Renewable Energy reporting segments. Corporate expenses consist primarily of personnel costs, share-based compensation costs and related general and administrative costs for executive, finance, legal, human resources, investor relations and our board of directors. Geographic Information Our long-lived assets as of June 30, 2015 related to our continuing operations are primarily based within our Lake Forest, CA facilities and long-lived assets related to our discontinued operations are primarily located in Ontario, Canada. Financial Information by Business Segment Selected financial information of continuing operations by business segment is as follows: Three Months Ended Six Months Ended 2015 2014 2015 2014 Revenues Fuel Storage & Systems: Net product sales $ 8,424,695 $ 4,813,558 $ 15,447,349 $ 9,631,988 Engineering services & license fees 2,259,012 1,716,490 4,434,472 4,852,933 Total revenues $ 10,683,707 $ 6,530,048 $ 19,881,821 $ 14,484,921 Cost of Revenues Fuel Storage & Systems: Cost of product sales $ 8,509,018 $ 3,941,705 $ 15,675,951 $ 7,599,509 Cost of services & fees 645,021 1,231,561 1,539,302 3,106,499 Total cost of revenues $ 9,154,039 $ 5,173,266 $ 17,215,253 $ 10,706,008 Gross Margin Fuel Storage & Systems: Net product sales $ (84,323 ) $ 871,853 $ (228,602 ) $ 2,032,479 Engineering services & license fees 1,613,991 484,929 2,895,170 1,746,434 Total gross margin $ 1,529,668 $ 1,356,782 $ 2,666,568 $ 3,778,913 Operating Expenses Fuel Storage & Systems: Research and development $ 2,049,901 $ 1,654,291 $ 3,928,794 $ 3,154,512 Selling, general and administrative 1,006,292 890,752 1,827,716 1,709,056 Total $ 3,056,193 $ 2,545,043 $ 5,756,510 $ 4,863,568 Corporate: Selling, general and administrative 1,348,782 1,639,153 2,995,651 3,376,304 Total operating expenses $ 4,404,975 $ 4,184,196 $ 8,752,161 $ 8,239,872 Operating Loss Fuel Storage & Systems $ (1,526,525 ) $ (1,188,261 ) $ (3,089,942 ) $ (1,084,655 ) Corporate (1,348,782 ) (1,639,153 ) (2,995,651 ) (3,376,304 ) Total operating loss $ (2,875,307 ) $ (2,827,414 ) $ (6,085,593 ) $ (4,460,959 ) Capital Expenditures Fuel Storage & Systems $ 536,173 $ 1,989,347 $ 725,211 $ 4,531,357 Corporate — 14,705 — 22,724 Total capital expenditures $ 536,173 $ 2,004,052 $ 725,211 $ 4,554,081 Depreciation Fuel Storage & Systems $ 415,371 $ 305,006 $ 816,175 $ 624,767 Corporate 19,684 7,578 40,174 17,076 Total depreciation $ 435,055 $ 312,584 $ 856,349 $ 641,843 Identifiable assets by reporting segment are as follows: June 30, December 31, Identifiable Assets Fuel Storage & Systems $ 42,082,595 $ 42,108,373 Renewable Energy - Held for Sale 21,966,458 23,161,999 Corporate 7,728,962 6,406,142 $ 71,778,015 $ 71,676,514

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation Management and our legal counsel periodically review the probable outcome of pending proceedings and the costs reasonably expected to be incurred. We accrue for these costs when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. On June 6, 2013, Iroquois Master Fund Ltd (Iroquois) filed suit against us in the United States District Court for the Southern District of New York (the Complaint). On June 17, 2014, the Court issued its Decision and Order, wherein the Court denied Iroquois’ request for specific performance damages but did grant Iroquois’ request for monetary damages, prejudgment interest and attorney’s fees. In connection with the Court’s decision, we recognized an estimated total cost of $1,765,000 in monetary damages, legal fees and other expenses and $77,000 in interest related expenses as of June 30, 2014. The actual amount of court ordered damages and reimbursements that we have incurred in connection with the Iroquois litigation through June 30, 2015 is $1,813,206 , consisting of (i) $1,015,440 in monetary damages, (ii) $704,857 in legal fees and other expenses and (iii) $92,909 in interest related expenses. On September 3, 2014, we paid the monetary damages and interest and on January 23, 2015 we paid the legal fees and other expenses. On December 15, 2014, Iroquois Master Fund (“Iroquois”) filed a Notice of Appeal with the United States Court of Appeals for the Second Circuit from the judgment entered by the United States District Court for the Southern District of New York. Although we believe that we will prevail on appeal, we can provide no assurance that the Second Circuit will uphold District Court’s judgment. If the Second Circuit were to reverse the District Court’s decision, then we may have to pay Iroquois additional damages and reimburse them for their reasonable attorney fees incurred in connection with the appeal.

Discontinued Operations (Tables

Discontinued Operations (Tables)	6 Months Ended
	Jun. 30, 2015
Discontinued Operations and Disposal Groups [Abstract]
Historical Operating Results of Schneider Power Classified as Discontinued Operations	The unaudited historical operating results of Schneider Power, classified as discontinued operations, are as follows: Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 Revenue $ 489,307 $ 603,370 $ 1,166,891 $ 1,501,828 Costs and expenses: Cost of sales 142,059 146,300 273,576 295,049 Selling, general and administrative 19,262 45,288 9,224 99,211 Impairment of long-lived assets (1) — — — 434,768 Total costs and expenses 161,321 191,588 282,800 829,028 Operating income 327,986 411,782 884,091 672,800 Interest expense, net (274,464 ) (318,163 ) (544,766 ) (630,712 ) Other, net — — — 484 Income from discontinued operations, net of taxes $ 53,522 $ 93,619 $ 339,325 $ 42,572 (1) We measure each disposal group of Schneider Power at the lower of its carrying amount or fair value less costs to sell. The fair value measurements are based on available Level 3 inputs such as market conditions and pending agreements to sell the assets. Based on assessments that we updated during the first quarter in 2014, we determined that the carrying value of goodwill was below its fair value and recognized a goodwill impairment charge of $0.4 million.
Unaudited Balance Sheets of Schneider Power, Classified as Discontinued Operations Held for Sale	naudited condensed balance sheets of Schneider Power, classified as discontinued operations held for sale, are as follows: June 30, December 31, Current Assets: Cash and cash equivalents $ 886,794 $ 392,045 Accounts receivable, net 136,063 221,943 Prepaid and other current assets (1) 1,032,013 435,615 Total current assets $ 2,054,870 $ 1,049,603 Non-Current Assets: Property and equipment, net (2) $ 18,847,736 $ 20,190,824 Intangible asset, net (3) 946,722 1,014,185 Goodwill 2,046 2,191 Deposits and other assets (1) 115,084 905,196 Total non-current assets $ 19,911,588 $ 22,112,396 Current Liabilities: Accounts payable $ 116,876 $ 275,628 Other accrued liabilities 185,491 101,015 Current portion of debt obligations (4) 1,470,547 1,173,521 Total current liabilities $ 1,772,914 $ 1,550,164 Non-Current Liabilities: Debt obligations, net of current portion (4) $ 17,505,480 $ 19,094,320 Total non-current liabilities $ 17,505,480 $ 19,094,320 (1) The fair value of contingent consideration associated with the sale of the Trout Creek wind farm is included in current assets in the 2015 period and in non-current assets in the 2014 period. (2) Consists mainly of wind turbine assets of the 10.0 megawatt Zephyr Wind Farm. (3) Consists of project assets associated with Schneider Power's renewable energy portfolio and power purchase agreements associated with the Zephyr Wind Farm. (4) Consists of a credit facility due to a secured project lender in connection with the acquisition of the Zephyr Wind Farm as discussed below.

Accounts Receivable (Tables)

Accounts Receivable (Tables)	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Accounts Receivable of Continuing Operations	Net accounts receivable of continuing operations consist of the following: June 30, December 31, Customer accounts billed $ 9,365,748 $ 11,120,593 Customer accounts unbilled 1,135,591 797,518 Allowance for doubtful accounts (291,227 ) (291,644 ) Accounts receivable, net $ 10,210,112 $ 11,626,467

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2015
Inventory Disclosure [Abstract]
Inventories of Continuing Operations	Inventories of continuing operations consist of the following: June 30, December 31, Materials and parts $ 12,452,060 $ 10,383,269 Work-in-process 93,605 389,155 Finished goods 1,504,406 2,046,025 14,050,071 12,818,449 Less: Provision for obsolescence (3,937,438 ) (3,945,745 ) Inventories, net $ 10,112,633 $ 8,872,704

Long-lived Assets (Tables)

Long-lived Assets (Tables)	6 Months Ended
	Jun. 30, 2015
Property, Plant and Equipment [Abstract]
Changes in Property and Equipment	Changes in property and equipment of continuing operations for the six months ended June 30, 2015 were as follows: Balance at January 1, 2015 Additions Transfers Depreciation Balance at Property and equipment in service, gross $ 39,290,495 $ — $ 859,400 $ — $ 40,149,895 Accumulated depreciation (31,270,855 ) — — (856,349 ) (32,127,204 ) Construction in progress: Plant equipment and other 1,742,701 725,211 (859,400 ) — 1,608,512 Total property and equipment, net $ 9,762,341 $ 725,211 $ — $ (856,349 ) $ 9,631,203

Debt Obligations (Tables)

Debt Obligations (Tables)	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Debt Obligations	Our debt obligations for continuing operations consist of the following: June 30, December 31, Obligations to Secured Lenders: Convertible Notes: $12,475,000 principal, $374,191 accrued interest, net of unamortized discount of $4,187,099 at June 30, 2015; $10,475,000 principal, $269,441 accrued interest, net of unamortized discount of $4,628,439 at December 31, 2014 $ 8,662,092 $ 6,116,002 Capital lease obligation: $1,059,945 principal and $9,581 accrued interest at June 30, 2015; $1,576,234 principal and $15,703 accrued interest at December 31, 2014 1,069,526 1,591,937 Line of Credit: $4,500,000 principal and $9,531 accrued interest at June 30, 2015; $4,500,000 principal and $9,218 accrued interest at December 31, 2014 4,509,531 4,509,218 Obligations to Other Creditors: Other obligations 5,809 13,245 Debt obligations of continuing operations, current and non-current 14,246,958 12,230,402 Less: Current portion of long-term debt, net of unamortized discount (4,549,464 ) (5,177,207 ) Debt obligations of continuing operations, non-current $ 9,697,494 $ 7,053,195
Schedule of Future Minimum Lease Payments for Capital Leases	The following table sets forth the total minimum lease payments under the capital lease arrangement for equipment along with the present value of the net minimum lease payments as of June 30, 2015 : 2015 minimum lease payments $ 1,139,228 Less: Amount representing interest (79,283 ) Capital lease obligation $ 1,059,945
Scheduled Maturities of Debt Obligations	The following table sets forth the scheduled maturities of our long term debt obligations and accrued interest of our continuing operations for each of the following years until maturity: Twelve Months Ending June 30, Debt Maturities Amortization of Discount Net Maturities of Debt Obligations 2016 $ 5,584,866 $ (1,035,402 ) $ 4,549,464 2017 — (1,253,311 ) (1,253,311 ) 2018 — (1,521,462 ) (1,521,462 ) 2019 (1) 12,849,191 (376,924 ) 12,472,267 $ 18,434,057 $ (4,187,099 ) $ 14,246,958 (1) Represents debt obligations under the Convertible Notes that are scheduled to mature in September 2018 and assumes that the put option effective on July 1, 2017 is not exercised by the note holders.

Warranties (Tables)

Warranties (Tables)	6 Months Ended
	Jun. 30, 2015
Product Warranties Disclosures [Abstract]
Changes in Product Warranty Liability	Changes in our product warranty liability for continuing operations are as follows: Balance at January 1, 2015 $ 611,999 Warranties issued and reserves added during the period 1,400,949 Settlements made during the period (530,267 ) Balance at June 30, 2015 $ 1,482,681

Derivative Instruments and Fa24

Derivative Instruments and Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Changes in Fair Value of Derivative Instrument Liabilities using Level Three Inputs	January 2013 Warrants Balance at January 1, 2015 $ 7,000 Fair value adjustments 3,000 Balance at March 31, 2015 $ 10,000 Fair value adjustments (3,000 ) Balance at June 30, 2015 $ 7,000
Assumptions used in Calculating Fair Value of Derivative Instrument Liabilities Measured with Level Three Inputs	. The fair values of the warrants issued on August 25, 2008 and February 18, 2011 were zero as of June 30, 2015 and December 31, 2014.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2015
Stockholders' Equity Note [Abstract]
Share-Based Compensation Expense Related to Stock Options and Restricted Stock	The share-based compensation expense related to stock options and restricted stock of continuing operations included in the accompanying condensed consolidated statements of operations and in the financial information by reportable business segment in Note 11 is: Fuel Storage & Systems Corporate Total Three Months Ended June 30, 2015 Cost of product sales $ 2,676 $ — $ 2,676 Research and development 54,808 — 54,808 Selling, general and administrative 8,271 112,097 120,368 Total share-based compensation $ 65,755 $ 112,097 $ 177,852 Three Months Ended June 30, 2014 Cost of product sales $ 7,090 $ — $ 7,090 Research and development 33,941 — 33,941 Selling, general and administrative 7,104 78,668 85,772 Total share-based compensation $ 48,135 $ 78,668 $ 126,803 Six Months Ended June 30, 2015 Cost of product sales $ 5,544 $ — $ 5,544 Research and development 108,138 — 108,138 Selling, general and administrative 17,197 218,890 236,087 Total share-based compensation $ 130,879 $ 218,890 $ 349,769 Six Months Ended June 30, 2014 Cost of product sales $ 14,698 $ — $ 14,698 Research and development 52,372 — 52,372 Selling, general and administrative 11,726 138,363 150,089 Total share-based compensation $ 78,796 $ 138,363 $ 217,159
Schedule of Share-based Compensation, Stock Options, Activity	Below is a summary of the options activity: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (In Years) Options outstanding at January 1, 2015 455,850 $ 8.60 Granted 53,650 $ 2.69 Exercised (2,281 ) $ 2.36 Forfeited (8,563 ) $ 2.26 Expired (3,445 ) $ 53.44 Options outstanding at June 30, 2015 495,211 $ 8.68 9.05 Vested and expected to vest at June 30, 2015 465,176 $ 8.08 8.09 Options exercisable at June 30, 2015 281,476 $ 15.53 7.03
Warrant Activity and Warrant Outstanding
Summary of Outstanding Warrants	A summary of our outstanding warrants as of June 30, 2015 is as follows: Issue Date Expiration Date Shares Subject to Outstanding Warrants Exercise Price at End of Period References August 25, 2008 August 25, 2015 349,741 $ 154.40 (a) April 30, 2010 through July 1, 2010 July 1, 2015 477 $ 72.80 October 13, 2010 and October 19, 2010 October 13, 2015 and October 19, 2015 9,037 $ 53.60 February 18, 2011 February 18, 2016 189,836 $ 26.28 February 18, 2011; Series “B” February 18, 2016 98,481 $ 24.00 (a) June 15, 2011 June 15, 2016 361,458 $ 15.40 June 15, 2011 June 15, 2018 11,250 $ 12.48 June 15, 2011 June 15, 2018 30,064 $ 15.40 June 20, 2011 June 20, 2016 14,269 $ 15.60 June 20, 2011 June 20, 2018 31 $ 15.60 July 6, 2011 July 6, 2016 104,929 $ 15.40 August 23, 2011 August 23, 2016 28,750 $ 15.40 September 29, 2011 September 29, 2016 4,782 $ 3.32 October 12, 2011 October 12, 2016 115,314 $ 3.32 October 17, 2011 through October 21, 2011 October 17, 2016 through October 21, 2016 19,138 $ 10.56 December 21, 2011 December 21, 2016 819,851 $ 4.88 January 19, 2012 January 19, 2017 33,187 $ 4.88 March 20, 2012; Series “B” March 21, 2017 1,311,000 $ 4.08 March 21, 2012; Series “B” March 21, 2017 735,900 $ 4.08 May 3, 2012; Series “B” March 21, 2017 27,612 $ 4.08 June 14, 2012; Series “B” March 21, 2017 51,112 $ 4.08 May 8, 2012 May 7, 2019 50,000 $ 3.60 June 22, 2012 and June 28, 2012 June 22, 2017 and June 28, 2017 572,860 $ 3.40 July 25, 2012 July 25, 2017 34,888 $ 3.56 January 24, 2013 July 25, 2018 11,250 $ 2.84 (a) September 18, 2013 March 18, 2019 3,287,192 $ 2.30 Total warrants outstanding at June 30, 2015 8,272,409
Schedule of Stockholders' Equity Note, Shares Available	The number of authorized shares available for future issuance as of June 30, 2015 is as follows: Common Stock Preferred Stock Shares Authorized 50,000,000 20,000,000 Less shares issued and outstanding at June 30, 2015 (28,022,802 ) — Less shares designated as of June 30, 2015 for issuance under: Stock options (1) (601,689 ) — Warrants outstanding (8,272,409 ) — Conversion of principal under convertible notes (2) (5,236,312 ) — Undesignated shares available 7,866,788 20,000,000 (1) Includes all of the options outstanding plus 106,478 shares remaining that are available for issuance under the 2011 Plan. (2) Represents the number of shares issuable upon conversion of $12.5 million of principal maturing on September 18, 2018 under the Convertible Notes at a fixed conversion price of $2.3824 per share.
Condensed Roll-Forward of Stockholders' Equity	The following table provides a condensed roll-forward of stockholders’ equity for the six months ended June 30, 2015 : Common Shares Outstanding Total Equity Balance at January 1, 2015 23,276,264 $ 23,604,932 Share-based compensation 144,257 256,842 Issuance of common stock to investors (1) 4,600,000 10,557,927 Issuance of common stock in connection with stock option exercises 2,281 5,375 Foreign currency translation — (168,776 ) Net loss — (6,587,785 ) Balance at June 30, 2015 28,022,802 $ 27,668,515

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2015
Earnings Per Share [Abstract]
Computation of Basic and Diluted Loss Per Share	The following table sets forth the computation of basic and diluted earnings (loss) per share: Three Months Ended Six Months Ended June 30, June 30, 2015 2014 2015 2014 Numerators for basic and diluted loss per share data: Loss from continuing operations $ (3,299,678 ) $ (2,327,756 ) $ (6,927,110 ) $ (5,478,942 ) Income from discontinued operations, net of taxes 53,522 93,619 339,325 42,572 Net loss $ (3,246,156 ) $ (2,234,137 ) $ (6,587,785 ) $ (5,436,370 ) Denominator for basic and diluted loss per share data—weighted-average shares 27,909,428 22,876,458 26,648,181 21,517,808 Basic and diluted per share data: Loss from continuing operations $ (0.12 ) $ (0.10 ) $ (0.26 ) $ (0.25 ) Income from discontinued operations — — 0.01 — Net loss $ (0.12 ) $ (0.10 ) $ (0.25 ) $ (0.25 )

Business Segments and Geograp27

Business Segments and Geographic Information (Tables)	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Financial Information by Business Segment	Selected financial information of continuing operations by business segment is as follows: Three Months Ended Six Months Ended 2015 2014 2015 2014 Revenues Fuel Storage & Systems: Net product sales $ 8,424,695 $ 4,813,558 $ 15,447,349 $ 9,631,988 Engineering services & license fees 2,259,012 1,716,490 4,434,472 4,852,933 Total revenues $ 10,683,707 $ 6,530,048 $ 19,881,821 $ 14,484,921 Cost of Revenues Fuel Storage & Systems: Cost of product sales $ 8,509,018 $ 3,941,705 $ 15,675,951 $ 7,599,509 Cost of services & fees 645,021 1,231,561 1,539,302 3,106,499 Total cost of revenues $ 9,154,039 $ 5,173,266 $ 17,215,253 $ 10,706,008 Gross Margin Fuel Storage & Systems: Net product sales $ (84,323 ) $ 871,853 $ (228,602 ) $ 2,032,479 Engineering services & license fees 1,613,991 484,929 2,895,170 1,746,434 Total gross margin $ 1,529,668 $ 1,356,782 $ 2,666,568 $ 3,778,913 Operating Expenses Fuel Storage & Systems: Research and development $ 2,049,901 $ 1,654,291 $ 3,928,794 $ 3,154,512 Selling, general and administrative 1,006,292 890,752 1,827,716 1,709,056 Total $ 3,056,193 $ 2,545,043 $ 5,756,510 $ 4,863,568 Corporate: Selling, general and administrative 1,348,782 1,639,153 2,995,651 3,376,304 Total operating expenses $ 4,404,975 $ 4,184,196 $ 8,752,161 $ 8,239,872 Operating Loss Fuel Storage & Systems $ (1,526,525 ) $ (1,188,261 ) $ (3,089,942 ) $ (1,084,655 ) Corporate (1,348,782 ) (1,639,153 ) (2,995,651 ) (3,376,304 ) Total operating loss $ (2,875,307 ) $ (2,827,414 ) $ (6,085,593 ) $ (4,460,959 ) Capital Expenditures Fuel Storage & Systems $ 536,173 $ 1,989,347 $ 725,211 $ 4,531,357 Corporate — 14,705 — 22,724 Total capital expenditures $ 536,173 $ 2,004,052 $ 725,211 $ 4,554,081 Depreciation Fuel Storage & Systems $ 415,371 $ 305,006 $ 816,175 $ 624,767 Corporate 19,684 7,578 40,174 17,076 Total depreciation $ 435,055 $ 312,584 $ 856,349 $ 641,843
Identifiable Assets by Reporting Segment	Identifiable assets by reporting segment are as follows: June 30, December 31, Identifiable Assets Fuel Storage & Systems $ 42,082,595 $ 42,108,373 Renewable Energy - Held for Sale 21,966,458 23,161,999 Corporate 7,728,962 6,406,142 $ 71,778,015 $ 71,676,514

Background and Basis of Prese28

Background and Basis of Presentation - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)Segmentshares	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)Segmentshares	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	May. 29, 2013MW	Apr. 20, 2012MW
Basis of Presentation [Line Items]
Stock split, conversion ratio		0.25
Number of reporting segments | Segment	3		3
Preferred stock, shares authorized | shares	20,000,000		20,000,000
Cash and cash equivalents at end of period	$ 6,275,794	$ 10,247,634	$ 6,275,794	$ 4,495,886	$ 7,031,981
Accounts Receivable, Gross, Current	9,365,748		9,365,748	11,120,593
Trout Creek Wind Farm
Basis of Presentation [Line Items]
Capacity of plant | MW						10	10
Advanced Green Innovations, LLC [Member]
Basis of Presentation [Line Items]
Accounts Receivable, Gross, Current	$ 1,900,000		$ 1,900,000	$ 2,800,000

Discontinued Operations Histori

Discontinued Operations Historical Operating Results of Schneider Power Classified as Discontinued Operations (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Revenue	$ 8,424,695	$ 4,813,558
Costs and expenses:
Selling, general and administrative	2,355,074	2,529,905	$ 4,823,367	$ 5,085,360
Research and development	2,049,901	1,654,291	3,928,794	3,154,512
Total costs and expenses	4,404,975	4,184,196	8,752,161	8,239,872
Operating income (loss)	(2,875,307)	(2,827,414)	(6,085,593)	(4,460,959)
Interest expense, net	(427,371)	(459,126)	(841,517)	(1,235,247)
Other expenses (Note 12)	0	(1,765,000)	0	(1,765,000)
Goodwill impairment			0	434,768
Discontinued Operations [Member] | Schneider Power [Member]
Revenue:
Revenue	489,307	603,370	1,166,891	1,501,828
Costs and expenses:
Cost of product sales	142,059	146,300	273,576	295,049
Selling, general and administrative	19,262	45,288	9,224
Research and development				99,211
Impairment of long-lived assets (1)	0	0		(434,768)
Total costs and expenses	161,321	191,588	282,800	829,028
Operating income (loss)	327,986	411,782	884,091	672,800
Interest expense, net	(274,464)	(318,163)	(544,766)	(630,712)
Other expenses (Note 12)	0	0	0	484
Loss from discontinued operations before income taxes	53,522	$ 93,619	339,325	$ 42,572
Goodwill impairment			$ 434,768
Schneider Power [Member] | Discontinued Operations [Member]
Costs and expenses:
Impairment of long-lived assets (1)	$ 0

Unaudited Balance Sheets of Sch

Unaudited Balance Sheets of Schneider Power, Classified as Discontinued Operations Held for Sale (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)MW	Jun. 30, 2014USD ($)	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	May. 29, 2013MW	May. 13, 2013MW	Apr. 20, 2012MW
Current assets:
Cash and cash equivalents at end of period	$ 6,275,794	$ 10,247,634	$ 10,247,634	$ 4,495,886	$ 7,031,981
Accounts receivable, net	10,210,112			11,626,467
Prepaid and other current assets	1,736,067			1,261,953
Total current assets	29,502,682			26,914,568
Non-Current Assets:
Property and equipment, net	9,631,203			9,762,341
Goodwill	12,400,000			12,400,000
Deposits and other assets	332,542			487,209
Current liabilities:
Accounts payable	6,596,620			9,313,192
Accrued payroll obligations	1,145,282			1,263,257
Other accrued liabilities (Note 12)	297,490			1,017,340
Current portion of debt obligations	4,549,464			5,177,207
Total current liabilities	16,906,526			21,924,067
Non-Current Liabilities:
Debt obligations, net of current portion	9,697,494			7,053,195
Discontinued Operations [Member] | Schneider Power [Member]
Discontinued Operations [Line Items]
Loss on sale of assets of discontinued operations	0	$ 0	$ (434,768)
Current assets:
Cash and cash equivalents at end of period	886,794			392,045
Accounts receivable, net	136,063			221,943
Prepaid and other current assets	1,032,013			435,615
Total current assets	2,054,870			1,049,603
Non-Current Assets:
Property and equipment, net	18,847,736			20,190,824
Intangible asset, net	946,722			1,014,185
Goodwill	2,046			2,191
Deposits and other assets	115,084			905,196
Total non-current assets	19,911,588			22,112,396
Current liabilities:
Accounts payable	116,876			275,628
Other accrued liabilities (Note 12)	185,491			101,015
Current portion of debt obligations	1,470,547			1,173,521
Total current liabilities	1,772,914			1,550,164
Non-Current Liabilities:
Debt obligations, net of current portion	17,505,480			19,094,320
Total non-current liabilities	$ 17,505,480			$ 19,094,320
Zephyr Farms Limited
Non-Current Liabilities:
Capacity of plant | MW	10
Trout Creek Wind Farm
Non-Current Liabilities:
Capacity of plant | MW						10		10
Providence Bay Wind Farm
Non-Current Liabilities:
Capacity of plant | MW							1.6
Schneider Power [Member] | Discontinued Operations [Member]
Discontinued Operations [Line Items]
Loss on sale of assets of discontinued operations	$ 0

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Detail) CAD in Millions

Mar. 19, 2013CAD

Jun. 30, 2015USD ($)MWCAD / $

Jun. 30, 2014USD ($)

Jun. 30, 2015USD ($)MWCAD / $

Jun. 30, 2014USD ($)

Jun. 30, 2015CADMWCAD / $

Jan. 08, 2015CAD

Dec. 31, 2014CAD / $

May. 29, 2013MW

May. 13, 2013MW

Mar. 19, 2013USD ($)

Apr. 20, 2012MW

Discontinued Operations [Line Items]

Segment reporting information, expenditures for additions to long-lived assets (depreciated 1/31/2013) | $

$ 536,173

$ 2,004,052

Impairment of assets of discontinued operations held for sale | $

$ 0

$ 434,768

Line of Credit Facility, Maximum Borrowing Capacity | $

2,200,000

2,200,000

Total amount of debt | $

$ 14,246,958

$ 14,246,958

Conversion rate of one CAD to one Dollar | CAD / $

0.800

0.800

0.800

0.860

Amendment of Debt Agreement

Discontinued Operations [Line Items]

Line of Credit Facility, Maximum Borrowing Capacity | $

$ 22,700,000

Bank Term Loan, interest rate

6.50%

January 31, 2014 | Amendment of Debt Agreement

Discontinued Operations [Line Items]

Debt Instrument, Periodic Payment Post Agreement Amendment

CAD 1.1

July 31,2018 | Amendment of Debt Agreement

Discontinued Operations [Line Items]

Debt Instrument, Principal Balloon Payment Post Agreement Amendment

2.6

July 31,2022 | Amendment of Debt Agreement

Discontinued Operations [Line Items]

Debt Instrument, Principal Balloon Payment Post Agreement Amendment

5.6

Jan 31, 2023 | Amendment of Debt Agreement

Discontinued Operations [Line Items]

Debt Instrument, Final Payment Post Agreement Amendment

CAD 5.1

Trout Creek Wind Farm

Discontinued Operations [Line Items]

Capacity of plant | MW

10

10

Zephyr Farms Limited

Discontinued Operations [Line Items]

Capacity of plant | MW

10

10

10

Bank term loan, principal amount

CAD 21.8

Interest Receivable

CAD 0.5

Unamortized debt premium

0.7

Total amount of debt

23.6

Accrued Interest on debt

CAD 1.1

Providence Bay Wind Farm

Discontinued Operations [Line Items]

Capacity of plant | MW

1.6

Continuing Operations

Discontinued Operations [Line Items]

Segment reporting information, expenditures for additions to long-lived assets (depreciated 1/31/2013) | $

$ 725,211

4,554,081

Fuel Storage & Vehicle Systems

Discontinued Operations [Line Items]

Segment reporting information, expenditures for additions to long-lived assets (depreciated 1/31/2013) | $

$ 536,173

$ 1,989,347

Fuel Storage & Vehicle Systems | Continuing Operations

Discontinued Operations [Line Items]

Segment reporting information, expenditures for additions to long-lived assets (depreciated 1/31/2013) | $

725,211

$ 4,531,357

Schneider Power [Member] | Segment, Discontinued Operations

Discontinued Operations [Line Items]

Impairment of assets of discontinued operations held for sale | $

$ 434,768

Net Accounts Receivable of Cont

Net Accounts Receivable of Continuing Operations (Detail) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Customer accounts billed	$ 9,365,748	$ 11,120,593
Customer accounts unbilled	1,135,591	797,518
Allowance for doubtful accounts	(291,227)	(291,644)
Accounts receivable, net	10,210,112	11,626,467
Advanced Green Innovations, LLC [Member]
Customer accounts billed	$ 1,900,000	$ 2,800,000

Inventories (Detail)

Inventories (Detail) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Materials and parts	$ 12,452,060	$ 10,383,269
Work-in-process	93,605	389,155
Finished goods	1,504,406	2,046,025
Inventory, Gross, Total	14,050,071	12,818,449
Less: provision for obsolescence	(3,937,438)	(3,945,745)
Inventories, net	$ 10,112,633	$ 8,872,704

Changes in Property and Equipme

Changes in Property and Equipment of Continuing Operations (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Movement in Property, Plant and Equipment [Roll Forward]
Beginning Balance	$ 9,762,341
Additions	725,211
Transfers	0
Depreciation	(856,349)	$ (641,843)
Ending Balance	9,631,203
Goodwill	12,400,000		$ 12,400,000
Fuel Storage and Vehicle Systems [Member]
Movement in Property, Plant and Equipment [Roll Forward]
Goodwill	12,400,000		$ 12,400,000
Property and equipment in service, gross
Movement in Property, Plant and Equipment [Roll Forward]
Beginning Balance	39,290,495
Additions	0
Transfers	859,400
Ending Balance	40,149,895
Accumulated depreciation
Movement in Property, Plant and Equipment [Roll Forward]
Beginning Balance	(31,270,855)
Additions	0
Transfers	0
Depreciation	(856,349)
Ending Balance	(32,127,204)
Plant equipment & other | Construction in Progress
Movement in Property, Plant and Equipment [Roll Forward]
Beginning Balance	1,742,701
Additions	725,211
Transfers	(859,400)
Ending Balance	$ 1,608,512

- Continuing Operations (Detail

- Continuing Operations (Detail) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Debt obligations of continuing operations, current and non-current	$ 14,246,958
Convertible notes	8,662,092	$ 6,116,002
Debt obligations of continuing operations, current and non-current	14,246,958	12,230,402
Less: obligations classified as current, net of amortization of debt discounts	14,246,958	12,230,402
Debt obligations of continuing operations, non-current	28,493,916	24,460,804
Line of Credit
Debt Instrument [Line Items]
Capital lease obligations	$ 1,069,526	$ 1,591,937
Other Debt Obligations
Debt Instrument [Line Items]
Debt obligations of continuing operations, current and non-current

Warranties - Changes in Product

Warranties - Changes in Product Warranty Liability (Detail) - Jun. 30, 2015 - USD ($)	Total	Total
Product Warranties Disclosures [Abstract]
Product Warranty Expense	$ 300,000
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning Balance		$ 611,999
Product Warranty Accrual, Warranties Issued		1,400,949
Settlements made during the period		(530,267)
Ending Balance	1,482,681	$ 1,482,681
Standard Product Warranty Accrual, Warranties Issued	$ 700,000

Debt Obligations - Continuing O

Debt Obligations - Continuing Operations (Parenthetical) (Detail) - USD ($)	Sep. 18, 2013	Jun. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Capital Lease Obligation, Principal Amount		$ 1,059,945	$ 1,576,234
Convertible Debt [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Long-term Debt	$ 11,000,000	2,000,000
Convertible Notes
Debt Instrument [Line Items]
Debt obligations, current and non-current, principal		12,475,000	10,475,000
Debt obligations, current and non-current, accrued interest		374,191	269,441
Debt obligations, current and non-current, debt discount		4,187,099	4,628,439
Capital Lease Obligations
Debt Instrument [Line Items]
Debt obligations, current and non-current, accrued interest		9,581	15,703
Line of Credit
Debt Instrument [Line Items]
Debt obligations, current and non-current, principal		4,500,000	4,500,000
Debt obligations, current and non-current, accrued interest		$ 9,531	$ 9,218

Debt Obligations - Minimum Leas

Debt Obligations - Minimum Lease Payments (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
Repayment of Long-term Capital Lease Obligations Associated with Implied Interest Cost	$ 154,784
Line of Credit Facility, Interest Rate at Period End		3.75%
Minimum lease payments under capital leases
Total minimum lease payments	1,139,228
Less: Amount representing interest	(79,283)
Capital lease obligation, net of current portion	$ 1,059,945
Debt Instrument Interest Additional Interest Above Prime Rate	0.50%	0.50%

Debt Obligations - Scheduled Ma

Debt Obligations - Scheduled Maturities of Debt Obligations (Detail) - USD ($)	Sep. 18, 2013	Jun. 30, 2015	Mar. 14, 2014
Long Term Debt Maturities Repayments Of Principal [Line Items]
Cash			$ 1.5
Debt Maturities		$ 18,434,057
Amortization of Discount		(4,187,099)
Net Maturities of Debt Obligations		$ 14,246,958
Debt Instrument, Convertible, Conversion Price		$ 525,000
Fiscal Year 2014
Long Term Debt Maturities Repayments Of Principal [Line Items]
Debt Maturities		$ 5,584,866
Amortization of Discount		(1,035,402)
Net Maturities of Debt Obligations		4,549,464
Fiscal Year 2015
Long Term Debt Maturities Repayments Of Principal [Line Items]
Debt Maturities		0
Amortization of Discount		(1,253,311)
Net Maturities of Debt Obligations		(1,253,311)
Fiscal Year 2016
Long Term Debt Maturities Repayments Of Principal [Line Items]
Debt Maturities		0
Amortization of Discount		(1,521,462)
Net Maturities of Debt Obligations		(1,521,462)
Fiscal Year 2017
Long Term Debt Maturities Repayments Of Principal [Line Items]
Debt Maturities		12,849,191
Amortization of Discount		(376,924)
Net Maturities of Debt Obligations		$ 12,472,267
Convertible Debt [Member]
Long Term Debt Maturities Repayments Of Principal [Line Items]
Debt Instrument, Interest Rate During Period	2.00%	2.00%
Debt Instrument, Convertible, Conversion Price		$ 2.3824

Debt Obligations - Additional I

Debt Obligations - Additional Information (Detail) - USD ($)	Oct. 24, 2013	Sep. 18, 2013	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013	Mar. 14, 2014	Dec. 31, 2012	Nov. 06, 2012
Debt Instrument [Line Items]
Class of Warrant or Right, Outstanding			8,272,409	8,327,405
Line Of Credit Facility Additional Borrowing Capacity			$ 7,500,000	$ 5,000,000
Line credit facility, variable interest rate				3.75%
Line credit facility, rate above prime rate			0.50%	0.50%
Line of Credit Facility, Fair Value of Amount Outstanding			$ 4,500,000
Line of Credit Facility, Commitment Fee Amount					$ 50,000
Debt Instrument, Basis Spread on Variable Rate			3.80%
Cash						$ 1.5
Line of credit maximum potencial availability			$ 2,200,000
Gross sale lease back amount								$ 3,250,000
Capital lease monthly payment							$ 111,846
Capital lease final payment				$ 691,846
Repayments of Long-term Capital Lease Obligations			671,073
Repayment of Long-term Capital Lease Obligations Associated with Implied Interest Cost			$ 154,784
Conversion price			$ 525,000
Common Stock, Shares, Issued			220,364
Convertible Notes Payable, Current			$ 491,968
Notes Payable Principal			475,000
Notes Payable Interest			16,968
Common stock warrants issued		3,411,235
Reserves for Letters of Credit			$ 180,000
Line of Credit Facility, Collateral			2
Line of Credit Facility, Commitment Fee Percentage			0.15%
Restricted Cash and Cash Equivalents, Current			$ 2,000,000	$ 1,500,000
Convertible Notes
Debt Instrument [Line Items]
Promissory note, interest rate		2.00%	2.00%
Conversion price			$ 2.3824
Cap on liquidated damages, percentage gross proceeds		12.00%
Proceeds from Convertible Debt		$ 10,420,898
Gross proceeds from issuance of debt		$ 11,000,000	$ 2,000,000
Convertible Notes | Lead Investor
Debt Instrument [Line Items]
Ownership percentage		5.00%
Convertible Notes | Board of Directors [Member]
Debt Instrument [Line Items]
Gross proceeds from issuance of debt	$ 50,000

Changes in Fair Value of Deriva

Changes in Fair Value of Derivative Instrument Liabilities using Level 3 Inputs (Detail) - January 24, 2013 - USD ($)	3 Months Ended
	Mar. 31, 2015	Jun. 30, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 7,000
Adjustments resulting from change in value of underlying asset and passage of time recognized in earnings	3,000	$ (3,000)
Ending Balance	$ 10,000	$ 7,000

Assumptions used in Calculating

Assumptions used in Calculating Fair Value of Derivative Instrument Liabilities Measured with Level Three Inputs (Detail)	Feb. 20, 2014$ / shares
Fair Value Measurements [Line Items]
Closing price of Quantum stock	$ 0.02

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - Class of Stock [Domain] $ / shares in Units, $ in Millions	Feb. 20, 2014USD ($)$ / sharesshares	Jun. 30, 2014	Jun. 30, 2015$ / sharesshares	Dec. 31, 2014$ / sharesshares
Stockholders Equity Note [Line Items]
Stock split, conversion ratio		0.25
Common stock, shares authorized			50,000,000	50,000,000
Preferred stock, par value | $ / shares			$ 0.001
Common Stock, Shares, Issued	4,600,000		28,090,052	23,310,721
Common stock, par value | $ / shares			$ 0.02	$ 0.02
Share Price | $ / shares	$ 0.02
Common Stock Over-Allotment	600,000
Proceeds from Issuance of Common Stock | $	$ 10.6
Preferred stock, shares authorized			20,000,000
Stock Incentive Plan 2011
Stockholders Equity Note [Line Items]
Options expiration period			10 years
Options vesting percentage for first four anniversaries			25.00%
Deferred Compensation Arrangement with Individual, Common Stock Reserved for Future Issuance			775,000
Period after termination date during which vested options can be exercisable			30 days
Possible increase in shares available for grant under stock options (in shares)			125,000
Percentage of possible increase in shares available for grant under stock options based on number of shares outstanding			3.00%
Shares of restricted stock, remaining			106,478
Stock Incentive Plan 2011 | Cliff Vest
Stockholders Equity Note [Line Items]
Options vesting percentage for first four anniversaries			33.33%

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Options Activity (Detail) - Jun. 30, 2015 - $ / shares	Total
Number of Shares
Options outstanding, beginning balance	455,851
Exercised	(2,281)
Forfeited	(5,876)
Expired	(2,383)
Options outstanding, ending balance	445,311
Vested and expected to vest at end of period	414,281
Options exercisable at end of period	118,664
Weighted Average Exercise Price
Beginning balance	$ 8.60
Exercised	2.36
Forfeited	2.27
Expired	76.27
Ending balance	8.37
Vested and expected to vest at end of period	8.80
Options exercisable at end of period	$ 24.15
Weighted Average Remaining Life (In Years)
Options outstanding at end of the year	8 years 2 months 12 days
Vested and expected to vest at end of period	8 years 1 month 6 days
Options exercisable at end of period	6 years 4 months 24 days

Stockholders' Equity - Share-Ba

Stockholders' Equity - Share-Based Compensation (Detail) - USD ($)	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share-based compensation	$ 177,852	$ 126,803
Cost of product sales
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share-based compensation	2,676	7,090
Research and development
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share-based compensation	54,808	33,941
Selling, general and administrative
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share-based compensation	120,368	85,772
Fuel Storage & Vehicle Systems
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share-based compensation	65,755	48,135
Fuel Storage & Vehicle Systems | Cost of product sales
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share-based compensation	2,676	7,090
Fuel Storage & Vehicle Systems | Research and development
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share-based compensation	54,808	33,941
Fuel Storage & Vehicle Systems | Selling, general and administrative
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share-based compensation	8,271	7,104
Corporate
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share-based compensation	112,097	78,668
Corporate | Selling, general and administrative
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Share-based compensation	$ 112,097	$ 78,668

Stockholders' Equity - Warrant

Stockholders' Equity - Warrant Activity and Warrants Outstanding (Detail)	Jun. 30, 2015shares
Class of Warrant or Right [Roll Forward]
Warrants outstanding, beginning balance	8,327,405
Warrants outstanding, ending balance	8,272,409

Stockholders' Equity - Summar47

Stockholders' Equity - Summary of Outstanding Warrant (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014
Warranty Liability [Line Items]
Shares Subject to Outstanding Warrants	$ 8,272,409	$ 8,272,409
Issuance of common stock to investors (in shares)		4,600,000
Issuance of common stock in connection with warrant exercises (in shares)		0
Proceeds from exercise of warrants		$ 5,375	$ 5,114,599
October 12, 2011
Warranty Liability [Line Items]
Warrant Expiration Date		Oct. 12, 2016
Shares Subject to Outstanding Warrants	$ 115,314	$ 115,314
Exercise Price at End of Period	$ 3.32	$ 3.32
December 21, 2011
Warranty Liability [Line Items]
Warrant Expiration Date		Dec. 21, 2016
Shares Subject to Outstanding Warrants	$ 819,851	$ 819,851
Exercise Price at End of Period	$ 4.88	$ 4.88
March 21, 2012; Series B | Series B
Warranty Liability [Line Items]
Warrant Expiration Date		Mar. 21, 2017
Shares Subject to Outstanding Warrants	$ 735,900	$ 735,900
Exercise Price at End of Period	$ 4.08	$ 4.08
June 22, 2012
Warranty Liability [Line Items]
Shares Subject to Outstanding Warrants	$ 572,860	$ 572,860
Exercise Price at End of Period	$ 3.40	$ 3.40
July 25, 2012
Warranty Liability [Line Items]
Warrant Expiration Date		Jul. 25, 2017
Shares Subject to Outstanding Warrants	$ 34,888	$ 34,888
Exercise Price at End of Period	$ 3.56	$ 3.56
September 18, 2013
Warranty Liability [Line Items]
Warrant Expiration Date		Mar. 18, 2019
Shares Subject to Outstanding Warrants	$ 3,287,192	$ 3,287,192
Exercise Price at End of Period	$ 2.30	$ 2.30
August 25, 2008
Warranty Liability [Line Items]
Warrant Expiration Date		Aug. 25, 2015
Shares Subject to Outstanding Warrants	$ 349,741	$ 349,741
Exercise Price at End of Period	$ 154.40	$ 154.40
April 30, 2010 through July 1, 2010
Warranty Liability [Line Items]
Shares Subject to Outstanding Warrants	$ 477	$ 477
Exercise Price at End of Period	$ 72.80	$ 72.80
April 30, 2010 through July 1, 2010 | Minimum
Warranty Liability [Line Items]
Warrant Expiration Date	Apr. 30, 2015
April 30, 2010 through July 1, 2010 | Maximum
Warranty Liability [Line Items]
Warrant Expiration Date	Jul. 1, 2015
February 18, 2011
Warranty Liability [Line Items]
Warrant Expiration Date		Feb. 18, 2016
Shares Subject to Outstanding Warrants	$ 189,836	$ 189,836
Exercise Price at End of Period	$ 26.28	$ 26.28
February 18, 2011; Series B | Series B
Warranty Liability [Line Items]
Warrant Expiration Date		Feb. 18, 2016
Shares Subject to Outstanding Warrants	$ 98,481	$ 98,481
Exercise Price at End of Period	$ 24	$ 24
June 15, 2011, first issue
Warranty Liability [Line Items]
Warrant Expiration Date		Jun. 15, 2016
Shares Subject to Outstanding Warrants	$ 361,458	$ 361,458
Exercise Price at End of Period	$ 15.40	$ 15.40
June 15, 2011, second issue
Warranty Liability [Line Items]
Warrant Expiration Date		Jun. 15, 2018
Shares Subject to Outstanding Warrants	$ 11,250	$ 11,250
Exercise Price at End of Period	$ 12.48	$ 12.48
June 15, 2011, third issue
Warranty Liability [Line Items]
Warrant Expiration Date		Jun. 15, 2018
Shares Subject to Outstanding Warrants	$ 30,064	$ 30,064
Exercise Price at End of Period	$ 15.40	$ 15.40
June 20, 2011, first issue
Warranty Liability [Line Items]
Warrant Expiration Date		Jun. 20, 2016
Shares Subject to Outstanding Warrants	$ 14,269	$ 14,269
Exercise Price at End of Period	$ 15.60	$ 15.60
June 20, 2011, second issue
Warranty Liability [Line Items]
Warrant Expiration Date		Jun. 20, 2018
Shares Subject to Outstanding Warrants	$ 31	$ 31
Exercise Price at End of Period	$ 15.60	$ 15.60
July 6, 2011
Warranty Liability [Line Items]
Warrant Expiration Date		Jul. 6, 2016
Shares Subject to Outstanding Warrants	$ 104,929	$ 104,929
Exercise Price at End of Period	$ 15.40	$ 15.40
August 23, 2011
Warranty Liability [Line Items]
Warrant Expiration Date		Aug. 23, 2016
Shares Subject to Outstanding Warrants	$ 28,750	$ 28,750
Exercise Price at End of Period	$ 15.40	$ 15.40
September 29, 2011
Warranty Liability [Line Items]
Warrant Expiration Date		Sep. 29, 2016
Shares Subject to Outstanding Warrants	$ 4,782	$ 4,782
Exercise Price at End of Period	$ 3.32	$ 3.32
October 17, 2011 through October 21, 2011
Warranty Liability [Line Items]
Shares Subject to Outstanding Warrants	$ 19,138	$ 19,138
Exercise Price at End of Period	$ 10.56	$ 10.56
October 17, 2011 through October 21, 2011 | Minimum
Warranty Liability [Line Items]
Warrant Expiration Date	Oct. 17, 2016
October 17, 2011 through October 21, 2011 | Maximum
Warranty Liability [Line Items]
Warrant Expiration Date	Oct. 21, 2016
Issuance During Period Eight [Member]
Warranty Liability [Line Items]
Shares Subject to Outstanding Warrants	$ 9,037	$ 9,037
Exercise Price at End of Period	$ 53.60	$ 53.60
Issuance During Period Eight [Member] | Minimum
Warranty Liability [Line Items]
Warrant Expiration Date	Oct. 13, 2015
Issuance During Period Eight [Member] | Maximum
Warranty Liability [Line Items]
Warrant Expiration Date	Oct. 19, 2015
January 19, 2012
Warranty Liability [Line Items]
Warrant Expiration Date		Jan. 19, 2017
Shares Subject to Outstanding Warrants	$ 33,187	$ 33,187
Exercise Price at End of Period	$ 4.88	$ 4.88
March 20, 2012; Series B | Series B
Warranty Liability [Line Items]
Warrant Expiration Date		Mar. 21, 2017
Shares Subject to Outstanding Warrants	$ 1,311,000	$ 1,311,000
Exercise Price at End of Period	$ 4.08	$ 4.08
May 3,2012; Series B | Series B
Warranty Liability [Line Items]
Warrant Expiration Date		Mar. 21, 2017
Shares Subject to Outstanding Warrants	$ 27,612	$ 27,612
Exercise Price at End of Period	$ 4.08	$ 4.08
June 4, 2012; Series B | Series B
Warranty Liability [Line Items]
Warrant Expiration Date		Mar. 21, 2017
Shares Subject to Outstanding Warrants	$ 51,112	$ 51,112
Exercise Price at End of Period	$ 4.08	$ 4.08
May 7, 2012
Warranty Liability [Line Items]
Warrant Expiration Date		May 7, 2019
Shares Subject to Outstanding Warrants	$ 50,000	$ 50,000
Exercise Price at End of Period	$ 3.60	$ 3.60
January 24, 2013
Warranty Liability [Line Items]
Warrant Expiration Date		Jul. 25, 2018
Shares Subject to Outstanding Warrants	$ 11,250	$ 11,250
Exercise Price at End of Period	$ 2.84	$ 2.84

Stockholders' Equity - Shares A

Stockholders' Equity - Shares Available (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Stockholders Equity Note [Line Items]
Common stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares authorized	20,000,000
Shares, Outstanding		23,276,264
Stock options	445,311	455,851
Class of Warrant or Right, Outstanding	8,272,409	8,327,405
Principal of notes payable	$ 8,662,092	$ 6,116,002
Conversion price	$ 525,000
Common stock
Stockholders Equity Note [Line Items]
Common stock, shares authorized	50,000,000
Shares, Outstanding	(28,022,802)
Stock options	(601,689)
Class of Warrant or Right, Outstanding	(8,272,409)
Conversion of principal under convertible notes	5,236,312
Undesignated Shares Available	7,866,788
Principal of notes payable	$ 12,500,000
Conversion price	$ 2.3824
Preferred Stock
Stockholders Equity Note [Line Items]
Preferred stock, shares authorized	20,000,000
Undesignated Shares Available	20,000,000
Stock Incentive Plan 2011
Stockholders Equity Note [Line Items]
Number of shares available for grant	106,478

Stockholders' Equity - Stockhol

Stockholders' Equity - Stockholders' Equity Roll-forward (Detail) - USD ($)	Feb. 20, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Stockholders' Equity Note [Abstract]
Common Stock, Shares, Issued	4,600,000	28,090,052		28,090,052		23,310,721
Proceeds from Issuance of Common Stock	$ 10,600,000
Issuance of Common Stock in Connection with Stock Option Exercises				2,281
Value of Issuance of Common Stock in Connection with Stock Option Exercises				$ 5,375
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares)				23,276,264
Beginning Balance				$ 23,604,932
Share-based compensation (in shares)				144,257
Share-based compensation				$ 256,842
Issuance of common stock to investors (in shares)				4,600,000
Issuance of common stock to investors				$ 10,557,927
Stock Issued During Period, Shares, Conversion of Convertible Securities				0
Stock Issued During Period, Value, Conversion of Convertible Securities				$ 0
Issuance of common stock in connection with warrant exercises (in shares)				0
Issuance of common stock in connection with stock option exercises				$ (168,776)
Net loss attributable to stockholders		$ (3,246,156)	$ (2,234,137)	(6,587,785)	$ (5,436,370)
Ending Balance		$ 27,668,515		$ 27,668,515
Share Price	$ 0.02

Earnings (Loss) Per Share - Com

Earnings (Loss) Per Share - Computation of Basic and Diluted Loss Per Share (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Numerators for basic and diluted loss per share data:
Net loss from continuing operations	$ (3,299,678)	$ (2,327,756)	$ (6,927,110)	$ (5,478,942)
Net loss from discontinued operations	53,522	93,619	339,325	42,572
Net Income (Loss) Available to Common Stockholders, Basic	(3,246,156)	(2,234,137)	(6,587,785)	(5,436,370)
Net loss attributable to stockholders	$ (3,246,156)	$ (2,234,137)	$ (6,587,785)	$ (5,436,370)
Denominator for basic and diluted loss per share data-weighted-average shares	27,909,428	22,876,458	26,648,181	21,517,808
Basic and diluted per share data:
Net loss from continuing operations per share	$ (0.12)	$ (0.10)	$ (0.26)	$ (0.25)
Net loss from discontinued operations	0	0	0.01	0
Net loss attributable to stockholders	$ (0.12)	$ (0.10)	$ (0.25)	$ (0.25)

Business Segments and Geograp51

Business Segments and Geographic Information - Additional Information (Detail) - Jun. 30, 2015	psiSegment	psiSegment
Segment Reporting [Abstract]
Number of reporting segments	3	3
Hydrogen storage capacity (in Psi) | psi	10,000	10,000

Financial Information of Contin

Financial Information of Continuing Operations by Business Segment (Detail)	3 Months Ended			6 Months Ended
	Jun. 30, 2015USD ($)Segment	Jun. 30, 2014USD ($)	Mar. 31, 2013USD ($)	Jun. 30, 2015USD ($)Segment	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Segment Reporting Disclosure [Line Items]
Proceeds from License Fees Received	$ 1,291,418			$ 1,899,875
Number of reporting segments | Segment	3			3
Net product sales	$ 8,424,695	$ 4,813,558
Contract revenue	2,259,012	1,716,490
Total revenue	10,683,707	6,530,048		$ 19,881,821	$ 14,484,921
Cost of revenues	9,154,039	5,173,266		17,215,253	10,706,008
Gross margin	1,529,668	1,356,782		2,666,568	3,778,913
Research and development	2,049,901	1,654,291		3,928,794	3,154,512
Selling, general and administrative	2,355,074	2,529,905		4,823,367	5,085,360
Total costs and expenses	4,404,975	4,184,196		8,752,161	8,239,872
Operating income (loss)	(2,875,307)	(2,827,414)		(6,085,593)	(4,460,959)
Segment reporting information, expenditures for additions to long-lived assets (depreciated 1/31/2013)	536,173	2,004,052
Depreciation	435,055	312,584		856,349	641,843
Identified Assets	71,778,015			71,778,015		$ 71,676,514
Fuel Storage & Vehicle Systems
Segment Reporting Disclosure [Line Items]
Net product sales				15,447,349	9,631,988
Contract revenue				4,434,472	4,852,933
Total revenue	10,683,707	6,530,048		19,881,821	14,484,921
Cost of product sales	8,509,018	3,941,705		15,675,951	7,599,509
Contract Revenue Cost	645,021	1,231,561		1,539,302	3,106,499
Cost of revenues	9,154,039	5,173,266		17,215,253	10,706,008
Gross Profit, Goods	(84,323)	871,853		(228,602)	2,032,479
Gross Profit, Contract Services	1,613,991	484,929		2,895,170	1,746,434
Gross margin	1,529,668	1,356,782		2,666,568	3,778,913
Selling, general and administrative	1,006,292	890,752		1,827,716	1,709,056
Total costs and expenses	3,056,193	2,545,043		5,756,510	4,863,568
Operating income (loss)	(1,526,525)	(1,188,261)		(3,089,942)	(1,084,655)
Segment reporting information, expenditures for additions to long-lived assets (depreciated 1/31/2013)	536,173	1,989,347
Depreciation	415,371	305,006		816,175	624,767
Identified Assets	42,082,595			42,082,595		42,108,373
Renewable Energy
Segment Reporting Disclosure [Line Items]
Identified Assets	21,966,458			21,966,458		23,161,999
Corporate
Segment Reporting Disclosure [Line Items]
Selling, general and administrative	1,348,782	1,639,153		2,995,651	3,376,304
Operating income (loss)	(1,348,782)	(1,639,153)		(2,995,651)	(3,376,304)
Segment reporting information, expenditures for additions to long-lived assets (depreciated 1/31/2013)	14,705		$ 0
Depreciation	19,684	$ 7,578		40,174	17,076
Identified Assets	$ 7,728,962			7,728,962		$ 6,406,142
Continuing Operations
Segment Reporting Disclosure [Line Items]
Segment reporting information, expenditures for additions to long-lived assets (depreciated 1/31/2013)				725,211	4,554,081
Continuing Operations | Fuel Storage & Vehicle Systems
Segment Reporting Disclosure [Line Items]
Segment reporting information, expenditures for additions to long-lived assets (depreciated 1/31/2013)				725,211	4,531,357
Continuing Operations | Corporate
Segment Reporting Disclosure [Line Items]
Segment reporting information, expenditures for additions to long-lived assets (depreciated 1/31/2013)				$ 0	$ 22,724

Commitments and Contingencies C

Commitments and Contingencies Commitments and Contingencies (Details) - Class of Warrant or Right [Domain] - USD ($)	Sep. 18, 2013	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Mar. 14, 2014	Feb. 20, 2014
Loss Contingencies [Line Items]
Share Price							$ 0.02
Cash						$ 1.5
Class of Warrant or Right, Outstanding		8,272,409	8,272,409		8,327,405
Common stock, par value		$ 0.02	$ 0.02		$ 0.02
Warrants and Rights Outstanding		$ 8,272,409	$ 8,272,409
Common stock warrants issued	3,411,235
Additional paid-in-capital		$ 560,456	$ 560,456		$ 465,525
Common Stock, Shares Authorized		50,000,000	50,000,000		50,000,000
Loss Contingency, Damages Awarded, Value				$ 1,765,000
Legal Fees			$ 77,000
Iroquois Complaint [Member]
Loss Contingencies [Line Items]
Cash		$ 1,015,440	1,015,440
Loss Contingency, Damages Awarded, Value			1,813,206
Interest Expense, Related Party			$ 92,909
Loss Contingency, Damages Paid, Value		$ 704,857