CDTi Advanced Materials (CDTI) 10-Q 14 Aug 18 2018 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Aug. 03, 2018
Document and Entity Information
Entity Registrant Name	CDTi ADVANCED MATERIALS, INC.
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Entity Central Index Key	949,428
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Entity Common Stock, Shares Outstanding (in shares)		20,352,965

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash	$ 1,779	$ 2,807
Accounts receivable, net	2,011	1,877
Inventories	1,126	1,355
Prepaid expenses and other current assets	245	656
Current assets of discontinued operations	599	1,524
Total current assets	5,760	8,219
Property and equipment, net	365	414
Intangible assets, net	970	1,051
Deferred tax asset	0	644
Other assets	94	62
Assets of discontinued operations	105	424
Total assets	7,294	10,814
Current liabilities:
Accounts payable	1,520	1,684
Accrued expenses and other current liabilities	886	1,539
Income taxes payable	807	789
Liabilities of discontinued operations	1,328	2,421
Total current liabilities	4,541	6,433
Other liabilities	0	0
Liabilities of discontinued operations	462	0
Total liabilities	5,003	6,433
Commitments and contingencies (Note 12)
Stockholders’ equity:
Preferred stock, par value $0.01 per share: authorized 100,000; no shares issued and outstanding	0	0
Common stock, par value $0.01 per share: authorized 50,000,000; issued and outstanding 15,908,736 and 15,803,736 shares at June 30, 2018 and December 31, 2017, respectively	158	158
Additional paid-in capital	238,729	238,455
Accumulated other comprehensive loss	(6,004)	(5,886)
Accumulated deficit	(230,592)	(228,346)
Total stockholders’ equity	2,291	4,381
Total liabilities and stockholders’ equity	$ 7,294	$ 10,814

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	100,000	100,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	15,908,736	15,803,736
Common stock, shares outstanding (in shares)	15,908,736	15,803,736

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Revenues	$ 2,433	$ 3,556	$ 4,630	$ 7,405
Cost of revenues	1,666	2,291	2,825	5,653
Gross profit	767	1,265	1,805	1,752
Operating expenses:
Research and development	621	917	1,321	1,911
Selling, general and administrative	1,300	1,899	2,734	4,607
Severance and other charges	0	(619)	0	(619)
Total operating expenses	1,921	2,197	4,055	5,899
Loss from continuing operations	(1,154)	(932)	(2,250)	(4,147)
Other income (expense):
Interest expense, net	0	(67)	0	(190)
Loss on extinguishment of debt	0	0	0	(194)
Gain (loss) on change in fair value of liability-classified warrants	170	4	534	(334)
Other expense, net	217	184	122	83
Total other income (expense)	387	121	656	(635)
Loss from continuing operations before income taxes	(767)	(811)	(1,594)	(4,782)
Income tax expense from continuing operations	704	169	741	168
Net loss from continuing operations	(1,471)	(980)	(2,335)	(4,950)
Net (loss) income from discontinued operations	(481)	595	89	1,469
Net loss	(1,952)	(385)	(2,246)	(3,481)
Foreign currency translation adjustments	(298)	211	(118)	221
Comprehensive loss	$ (2,250)	$ (174)	$ (2,364)	$ (3,260)
Basic and diluted net (loss) income per common share:
Net loss from continuing operations (in dollars per share)	$ (0.09)	$ (0.05)	$ (0.15)	$ (0.32)
Net (loss) income from discontinued operations (in dollars per share)	(0.03)	0.04	0.01	0.09
Net loss (in dollars per share)	$ (0.12)	$ (0.01)	$ (0.14)	$ (0.22)
Weighted average shares outstanding - basic and diluted (in shares)	15,876	15,708	15,840	15,706
Weighted average number of shares outstanding, diluted	15,876	16,408	15,840	15,936

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net loss	$ (2,246)	$ (3,481)
Net income from discontinued operations	(89)	(1,469)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	136	291
Stock-based compensation expense	276	224
(Gain) loss on change in fair value of liability-classified warrants	(534)	334
Deferred income tax provision	633	0
Loss on extinguishment of debt	0	194
Gain on foreign currency transactions	(98)	92
Other	(34)	4
Changes in operating assets and liabilities:
Accounts receivable	(169)	516
Inventories	207	268
Prepaid expenses and other assets	379	14
Accounts payable, accrued expenses and other current liabilities	(248)	(2,425)
Income taxes payable	21	40
Cash used in operating activities of continuing operations	(1,766)	(5,398)
Cash provided by operating activities of discontinued operations	703	1,845
Net cash used in operating activities	(1,063)	(3,553)
Cash flows from investing activities:
Purchases of property and equipment	(8)	0
Proceeds from sale of property and equipment	35	0
Net cash provided by investing activities	27	0
Cash flows from financing activities:
Net payments under demand line of credit	0	(710)
Payments of shareholder notes payable	0	(2,000)
Proceeds from exercise of stock options	0	30
Cash used in financing activities of continuing operations	0	(2,680)
Cash used in financing activities of discontinued operations	0	(76)
Net cash used in financing activities	0	(2,756)
Effect of exchange rates on cash	8	81
Net change in cash	(1,028)	(6,228)
Cash at beginning of period	2,807	7,839
Cash at end of period	$ 1,779	$ 1,611

Organization

Organization	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization CDTi Advanced Materials, Inc. ("CDTi" or the "Company") is a leading provider of technology and solutions to the automotive emissions control markets. The Company possesses market leading expertise in emissions catalyst design and engineering for automotive and off-road applications The Company has a proven ability to develop proprietary materials incorporating various base metals that replace costly platinum group metals ("PGMs") in coatings on vehicle catalytic converters. Recently, the Company has expanded its materials platform to include new synergized-PGM diesel oxidation catalysts (SPGM ™ DOC), Base-Metal Activated Rhodium Support (BMARS ™ ), and Spinel™ technologies, and it is in the process of introducing these new catalyst technologies to OEMs and other vehicle catalyst manufacturers in a proprietary powder form. The Company believes that this powder-to-coat business model will allow it to achieve greater scale and higher return on its technology investment than in the past. The Company's business is driven by increasingly stringent global emission standards for internal combustion engines, which are major sources of a variety of harmful pollutants. It has operations in the United States ("U.S."), the United Kingdom and Sweden.

Liquidity and Going Concern

Liquidity and Going Concern	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Liquidity and Going Concern	Liquidity and Going Concern The accompanying condensed consolidated financial statements have been prepared assuming the Company will continue as a going concern. Therefore, the condensed consolidated financial statements contemplate the realization of assets and liquidation of liabilities in the ordinary course of business. The Company has suffered recurring losses and negative cash flows from operations since inception, resulting in an accumulated deficit of $230.6 million at June 30, 2018 . The Company has funded its operations through asset sales, credit facilities and other borrowings and equity sales. At June 30, 2018 , the Company had $1.8 million in cash. The Company’s continuation as a going concern is dependent upon its ability to obtain adequate financing, which the Company has successfully secured since inception, including financing from equity sales and asset divestitures. However, there is no assurance that the Company will be able to achieve projected levels of revenue and maintain access to sufficient working capital, and accordingly, there is substantial doubt as to whether the Company’s existing cash resources and working capital are sufficient to enable it to continue its operations within one year from the financial statement issuance date. If the Company is unable to obtain the necessary capital, it will be forced to license or liquidate its assets, significantly curtail or cease its operations and/or seek reorganization under the U.S. Bankruptcy Code. The condensed consolidated financial statements do not include any adjustments that may be necessary if the Company is unable to continue as a going concern. On May 19, 2015, the Company filed a shelf registration statement on Form S-3 with the SEC, which was declared effective on November 17, 2015. The Form S-3 permits the Company to sell in one or more registered transactions up to an aggregate of $50.0 million of various securities not to exceed one-third of the Company’s public float in any 12 -month period. As of June 30, 2018 , the Company had sold an aggregate of $3.1 million using the Form S-3. In July 2018, the Company sold approximately $2.2 million of common stock in a rights offering to existing shareholders utilizing the Form S-3.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the SEC for interim financial reporting. In the opinion of management, all normal recurring accruals and adjustments that are necessary for a fair presentation have been reflected. Intercompany transactions and balances have been eliminated in consolidation. The results reported in these unaudited condensed consolidated financial statements should not necessarily be taken as indicative of results that may be expected for the entire year. Certain financial information that is normally included in annual financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), but is not required for interim reporting purposes, has been condensed or omitted. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2017, filed with the SEC on April 2, 2018. Discontinued Operations Upon divesture of a business, the Company classifies such business as a discontinued operation, if the divested business represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results. For disposals other than by sale such as abandonment, the results of operations of a business would not be recorded as a discontinued operation until the period in which the business is actually abandoned. We have completed manufacturing commitments to Honda for production catalysts. In line with our strategy to provide our catalyst technology to other catalyst manufacturers in the form of functional powders or material systems, we will no longer sell coated catalysts and have exited our Coated Catalyst business. Our exit of the Coated Catalyst business qualifies as discontinued operations and therefore has been presented as such for all reporting periods. Results of discontinued operations include all revenues and expenses directly derived from such businesses; general corporate overhead is not allocated to discontinued operations. The Company also presents cash flows from discontinued operations separately from cash flows of continuing operations. All discussions and amounts in the consolidated financial statements and related notes for all periods presented relate to continuing operations only, unless otherwise noted. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the U.S requires management of the Company to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent liabilities. These estimates and assumptions are based on management's best estimates and judgment. On an ongoing basis, the Company evaluates its estimates and assumptions, including those related to impairment of long-lived assets, stock-based compensation, the fair value of financial instruments including warrants, allowance for doubtful accounts, inventory valuation, taxes and contingent and accrued liabilities. The Company bases its estimates on historical experience and various other factors, including the current economic environment, which it believes to be reasonable under the circumstances. Estimates and assumptions are adjusted when facts and circumstances dictate. Actual results may differ from these estimates under different assumptions and conditions. Management believes that the estimates are reasonable. Revenue Adoption of Recent Accounting Pronouncement Effective January 1, 2018, the Company adopted the Financial Accounting Standards Board ("FASB") Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers (Topic 606). ASU 2014-09 supersedes the revenue recognition requirements in FASB Accounting Standards Codification ("ASC") 605, Revenue Recognition, and is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. It also requires additional disclosure about the nature, amount, timing, and uncertainty of revenue, cash flows arising from customer contracts, including significant judgments and changes in judgments, and assets recognized from costs incurred to obtain or fulfill a contract. The adoption of ASU 2014-09, using the modified retrospective approach, had no significant impact on the Company's results of operations, cash flows or financial position. Revenue Recognition Net sales include products and shipping and handling charges, net of estimates for product returns as well as royalties earned under licensing agreements. Revenue for products and shipping and handling charges are measured as the amount of consideration the Company expects to receive in exchange for transferring products. All revenue is recognized when the Company satisfies its performance obligations under the contract. The Company recognizes revenue by transferring the promised products to the customer, with revenue recognized at the point in time the customer obtains control of the products. The Company recognizes revenue for shipping and handling charges at the time the products are delivered to or picked up by the customer. The Company estimates product returns based on historical return rates. The majority of the Company's contracts have a single performance obligation and are short term in nature. The Company recognizes revenue for its usage based royalties when the usage has occurred. Sales taxes and value added taxes in foreign jurisdictions that are collected from customers and remitted to governmental authorities are accounted for on a net basis and therefore excluded from the transaction price and net sales. Recent Accounting Pronouncements In February 2016, the FASB issued ASU 2016-2, Leases (Topic 842) . ASU 2016-2 requires the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under previous U.S. generally accepted accounting principles. It is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. Entities are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The Company is evaluating the impact of adoption of ASU 2016-2 on its consolidated financial statements. In July 2017, the FASB issued ASU 2017-11, Earnings Per Share (Topic 260), Distinguishing Liabilities from Equity (Topic 480), Derivatives and Hedging (Topic 815). The amendments in Part I of this Update change the classification analysis of certain equity-linked financial instruments (or embedded features) with down round features. The amendments in Part II of this Update recharacterize the indefinite deferral of certain provisions of Topic 480 that now are presented as pending content in the Codification, to a scope exception. Those amendments do not have an accounting effect. For public business entities, the amendments in Part I of this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted for all entities, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The Company is currently evaluating the impact that ASU 2017-11 will have on its consolidated financial statements.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories consists of the following (in thousands): June 30, 2018 December 31, 2017 Raw materials $ 657 $ 721 Work in process 226 322 Finished goods 243 312 Total inventories $ 1,126 $ 1,355

Intangible Assets

Intangible Assets	6 Months Ended
	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	Intangible Assets Intangible assets consist of the following (in thousands): Useful Life in Years June 30, 2018 December 31, 2017 Trade name 15 - 20 $ 1,208 $ 1,208 Patents and know-how 5 - 12 4,113 4,113 Customer relationships 4 - 8 730 750 6,051 6,071 Less accumulated amortization (5,081 ) (5,020 ) $ 970 $ 1,051 The Company recorded amortization expense related to amortizable intangible assets of less than $0.1 million and $0.1 million during the three months ended June 30, 2018 and 2017 , respectively and approximately $0.1 million and $0.2 million for the six months ended June 30, 2018 and 2017 , respectively Estimated amortization expense for each of the next five years is as follows (in thousands): Years ending December 31: Remainder of 2018 $ 81 2019 162 2020 162 2021 162 2022 142 Thereafter 261 $ 970

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	6 Months Ended
	Jun. 30, 2018
Accrued Expenses and Other Current Liabilities
Accrued Expenses and Other Current Liabilities	Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities consist of the following (in thousands): June 30, 2018 December 31, 2017 Accrued salaries and benefits $ 550 $ 560 Accrued severance and other charges (1) — 28 Accrued warranty (2) 66 125 Warrant liability (3) 135 669 Other 135 157 $ 886 $ 1,539 (1) For additional information, refer to Note 7, “Severance and Other Charges”. (2) For additional information, refer to Note 8, “Accrued Warranty”. (3) For additional information, refer to Note 9, “Warrants” and Note 10, “Fair Value Measurements”.

Severance and Other Charges

Severance and Other Charges	6 Months Ended
	Jun. 30, 2018
Restructuring and Related Activities [Abstract]
Severance and Other Charges	Severance and Other Charges Severance and other charges consist of employee severance expense and lease exit costs, and the following summarizes the activity (in thousands): Severance Lease Exit Costs Total December 31, 2016 $ 718 $ 1,020 $ 1,738 Provision — (619 ) (619 ) Payments (482 ) (237 ) (719 ) June 30, 2017 $ 236 $ 164 $ 400 Severance Lease Exit Costs Total December 31, 2017 $ 28 $ — $ 28 Provision — — — Payments (28 ) — (28 ) June 30, 2018 $ — $ — $ — During 2016, the Company accrued severance and lease exit costs associated with its manufacturing facility in Canada and other North American locations. During 2017, the Company incurred severance charges related to the sale of its DuraFit business as well as the contraction in its operations team in response to the permanent decrease in sales to Honda.

Accrued Warranty

Accrued Warranty	6 Months Ended
	Jun. 30, 2018
Product Warranties Disclosures [Abstract]
Accrued Warranty	Accrued Warranty The Company establishes reserves for future product warranty costs that are expected to be incurred pursuant to specific warranty provisions with its customers. The Company generally warrants its products against defects between one and five years from date of shipment, depending on the product. The warranty reserves are established at the time of sale and updated throughout the warranty period based upon numerous factors including historical warranty return rates and expenses over various warranty periods. Historically, warranty returns have not been material. The following summarizes the activity in the Company’s accrual for product warranty (in thousands): Six Months Ended 2018 2017 Balance at beginning of period $ 125 $ 338 Accrued warranty expense/(benefit) (24 ) 121 Warranty claims paid (35 ) (147 ) Balance at end of period $ 66 $ 312 At June 30, 2018 and December 31, 2017 , the balance of accrued warranty was recorded in accrued expenses and other liabilities in the condensed consolidated balance sheet.

Warrants

Warrants	6 Months Ended
	Jun. 30, 2018
Warrants and Rights Note Disclosure [Abstract]
Warrants	Warrants Warrants outstanding and exercisable are summarized as follows: Shares(1) Weighted Average Exercise Price Range of Exercise Prices Outstanding at December 31, 2017 904,470 $ 5.27 $2.20-$21.00 Exercised — — — Expired (6,920 ) 6.25 — Outstanding at June 30, 2018 897,550 $ 5.26 $2.20-$21.00 Exercisable at June 30, 2018 897,550 $ 5.26 $2.20-$21.00 (1) Outstanding and exercisable information includes 15,000 equity-classified warrants. Warrant Liability The Company's warrant liability is carried at fair value and is classified as Level 3 in the fair value hierarchy because the warrants are valued based on unobservable inputs. The Company determines the fair value of its warrant liability using the Black-Scholes option-pricing model unless the awards are subject to market conditions, in which case it uses a Monte Carlo simulation model, which utilizes multiple input variables to estimate the probability that market conditions will be achieved. These models are dependent on several variables such as the instrument's expected term, expected strike price, expected risk-free interest rate over the expected term of the instrument, expected dividend yield rate over the expected term and the expected volatility. The expected strike price for warrants with full-ratchet down-round price protection is based on a weighted average probability analysis of the strike price changes expected during the term as a result of the full-ratchet down-round price protection. The assumptions used in the Black-Scholes option-pricing model to estimate the fair value of the warrant liability as of June 30, 2018 were as follows: Expected volatility 96.1% - 104.9% Risk-free interest rate 2.38% - 2.65% Dividend yield — Expected life in years 1.26 - 3.46 The assumptions used in the Monte Carlo simulation model to estimate the fair value of the warrant liability as of June 30, 2018 were as follows: Expected volatility 13.2% - 101.9% Risk-free interest rate 0.18% - 2.4% Dividend yield — Expected life in years 0.01 - 1.36 The warrant liability, included in accrued expenses and other current liabilities in the accompanying consolidated balance sheets, is re-measured at the end of each reporting period with changes in fair value recognized in other income (expense), net in the consolidated statements of comprehensive loss. Upon the exercise of a warrant that is classified as a liability, the fair value of the warrant exercised is re-measured on the exercise date and reclassified from warrant liability to additional paid-in capital.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company measures certain financial assets and liabilities at fair value in accordance with a hierarchy which requires an entity to maximize the use of observable inputs which reflect market data obtained from independent sources and minimize the use of unobservable inputs. There are three levels of inputs that may be used to measure fair value: Level 1: Quoted prices (unadjusted) in active markets for identical assets or liabilities; Level 2: Inputs other than quoted prices included within Level 1 that are either directly or indirectly observable including quoted prices for similar instruments in active markets and quoted prices for identical or similar instruments in markets that are not active; and Level 3: Unobservable inputs in which little or no market activity exists, therefore requiring an entity to develop its own assumptions about the assumptions that market participants would use in pricing. Assets and liabilities measured at fair value on the Company’s balance sheet on a recurring basis include the following at June 30, 2018 and December 31, 2017 (in thousands): Warrant Liability Level 1 Level 2 Level 3 June 30, 2018 — — $ 135 December 31, 2017 — — $ 669 There were no transfers in or out of Level 1, Level 2 or Level 3 fair value measurements during the six months ended June 30, 2018 . The following is a reconciliation of the warrant liability, included in accrued expenses and other current liabilities in the accompanying unaudited condensed consolidated balance sheets, measured at fair value using Level 3 inputs (in thousands): Six Months Ended 2018 2017 Balance at beginning of period $ 669 $ 1,226 Exercise of common stock warrants — — Remeasurement of common stock warrants (534 ) 334 Balance at end of period $ 135 $ 1,560 The fair values of the Company’s cash, accounts receivable, prepaid expenses and other current assets, accounts payable and accrued expenses and other current liabilities approximate carrying values due to the short maturity of these instruments. The Company’s assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the valuation of assets and liabilities and their placement within the fair value hierarchy.

Loss per Share

Loss per Share	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Loss per Share	Loss per Share Basic net loss per share is computed using the weighted average number of common shares outstanding during the period. Diluted net loss per share is computed using the weighted average number of common shares plus potentially dilutive common shares. Potentially dilutive common shares include employee stock options and restricted share units and warrants and debt that are convertible into the Company’s common stock. Because the Company incurred net losses in the three and six months ended June 30, 2018 and 2017, the effect of potentially dilutive securities has been excluded in the computation of diluted loss per share as their impact would be anti-dilutive. Potentially dilutive common stock equivalents excluded were 1.9 million and 2.1 million shares during the three and six months ended June 30, 2018 and 2017, respectively.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The Company leases facilities under non-cancellable operating leases. The leases expire at various dates through fiscal 2018 and frequently include renewal provisions for varying periods of time, provisions which require us to pay taxes, insurance and maintenance costs, and provisions for minimum rent increases. Minimum lease payments, including scheduled rent increases are recognized as rent expense on a straight-line basis over the term of the lease. Litigation The Company is involved in legal proceedings from time to time in the ordinary course of its business. Management does not believe that any of these claims and proceedings against it is likely to have, individually or in the aggregate, a material adverse effect on the Company’s condensed consolidated financial condition, results of operations or cash flows. Accordingly, the Company cannot determine the final amount, if any, of its liability beyond the amount accrued in the unaudited condensed consolidated financial statements as of June 30, 2018 , nor is it possible to estimate what litigation-related costs will be in the future. Applied Utility Systems, Inc. The Company is undergoing a sales and use tax audit by the State of California (the "State") with respect to Applied Utility Systems, Inc., a former subsidiary of the Company that was sold in 2009, for the period of 2007 through 2009. The audit has identified a project performed by the Company during that time period for which sales tax was not collected and remitted and for which the State asserts that proper documentation of resale may not have been obtained and that the Company owes sales tax of $1.5 million , inclusive of interest. The Company contends and believes that it received sufficient and proper documentation from its customer to support not collecting and remitting sales tax from that customer and is actively disputing the audit report with the State. On August 12, 2013, the Company appeared at an appeals conference with the State Board of Equalization ("BOE"). On July 21, 2014, the Company received a Decision and Recommendation ("D&R") from the BOE. The D&R's conclusion was that the basis for the calculation of the aforementioned $1.5 million tax due should be reduced from $12.2 million to $9.0 million with a commensurate reduction in the tax owed to the State. Regardless of this finding, the Company continues to believe that it will prevail in this matter, as it believes that the State did not adequately address the legal arguments related to the Company's acceptance of the valid resale certificate from its customer. The Company has not agreed to these findings, and therefore, it will be appealing at a higher level at the BOE. Based on a re-audit, the BOE lowered the tax due to $0.9 million , inclusive of interest. The Company continues to disagree with these findings based on the aforementioned reasons. However, in October 2015, the Company offered to settle this case for $0.1 million , which is based on the expected cost of continuing to contest this audit. Accordingly, an accrual was charged to discontinued operations during the year ended December 31, 2015 to reflect the offer to settle this case. Should the Company not prevail with the offer to settle this case, it plans to continue with the appeals process. Further, should the Company not prevail in this case, it will pursue reimbursement from the customer for all assessments from the State.

Geographic Information

Geographic Information	6 Months Ended
	Jun. 30, 2018
Segment Reporting [Abstract]
Geographic Information	Geographic Information Net sales by geographic region based on the location of the customer is as follows (in thousands): Three Months Ended Six Months Ended 2018 2017 2018 2017 United States $ 894 $ 2,063 $ 1,661 $ 4,585 International: Canada 339 475 603 741 Europe 1,172 1,018 2,290 1,946 Asia 28 — 76 133 Total international 1,539 1,493 2,969 2,820 Total revenues $ 2,433 $ 3,556 $ 4,630 $ 7,405

Concentrations

Concentrations	6 Months Ended
	Jun. 30, 2018
Risks and Uncertainties [Abstract]
Concentrations	Concentrations For the three months ended June 30, 2018, one customer accounted for approximately 10% of the Company's revenues. For all other period presented, no customer accounted for more than 10% of the Company's revenues. For the three months ended June 30, 2018, the Company had two suppliers that accounted for approximately 43% and 11% of the Company's material purchases. For the three months ended June 30, 2017, the Company had three suppliers that accounted for approximately 35% , 15% and 14% of the Company's material purchases. For the six months ended June 30, 2018, the Company had two suppliers that accounted for approximately 56% , and 10% of the Company's material purchases. For the six months ended June 30, 2017, the Company had three suppliers that accounted for approximately 28% , 14% and 11% of the Company's material purchases.

Discontinued Operations

Discontinued Operations	6 Months Ended
	Jun. 30, 2018
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations The Coated Catalyst operations are presented below as discontinued operations. The following table presents the major classes of assets and liabilities of discontinued operations in the consolidated balance sheets as of June 30, 2018 and December 31, 2017 (in thousands). June 30, 2018 December 31, 2017 Assets Accounts receivable, net $ 325 $ 220 Inventories 221 1,292 Prepaid expenses and other current assets 53 12 Current assets of discontinued operations 599 1,524 Property and equipment, net — 300 Other assets 105 124 Assets of discontinued operations 105 424 Total assets of discontinued operations 704 1,948 Liabilities Accounts payable 421 375 Accrued expenses and other current liabilities 907 2,046 Current liabilities of discontinued operations 1,328 2,421 Other liabilities 462 — Net liabilities of discontinued operations $ 1,086 $ 473 The following table presents revenue and expense information for discontinued operations for the three and six months ended June 30, 2018 and 2017 (in thousands). Three Months Ended Six Months Ended 2018 2017 2018 2017 Revenues $ 574 $ 4,843 $ 3,289 $ 9,208 Pre-tax (loss) income (481 ) 595 89 1,469 Income tax expense — — — — Net (loss) income from discontinued operations $ (481 ) $ 595 $ 89 $ 1,469

Subsequent Event

Subsequent Event	6 Months Ended
	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On July 25, 2018, the Company issued and sold an aggregate of 4,427,563 shares of its common stock at the subscription price of $0.50 per share, pursuant to a rights offering to its existing stockholders. The Company received aggregate gross proceeds of approximately $2.2 million from the rights offering before deducting offering expenses.

Summary of Significant Accoun22

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the SEC for interim financial reporting. In the opinion of management, all normal recurring accruals and adjustments that are necessary for a fair presentation have been reflected. Intercompany transactions and balances have been eliminated in consolidation. The results reported in these unaudited condensed consolidated financial statements should not necessarily be taken as indicative of results that may be expected for the entire year. Certain financial information that is normally included in annual financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), but is not required for interim reporting purposes, has been condensed or omitted. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2017, filed with the SEC on April 2, 2018.
Discontinued Operations	Discontinued Operations Upon divesture of a business, the Company classifies such business as a discontinued operation, if the divested business represents a strategic shift that has (or will have) a major effect on an entity’s operations and financial results. For disposals other than by sale such as abandonment, the results of operations of a business would not be recorded as a discontinued operation until the period in which the business is actually abandoned. We have completed manufacturing commitments to Honda for production catalysts. In line with our strategy to provide our catalyst technology to other catalyst manufacturers in the form of functional powders or material systems, we will no longer sell coated catalysts and have exited our Coated Catalyst business. Our exit of the Coated Catalyst business qualifies as discontinued operations and therefore has been presented as such for all reporting periods. Results of discontinued operations include all revenues and expenses directly derived from such businesses; general corporate overhead is not allocated to discontinued operations. The Company also presents cash flows from discontinued operations separately from cash flows of continuing operations. All discussions and amounts in the consolidated financial statements and related notes for all periods presented relate to continuing operations only, unless otherwise noted.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the U.S requires management of the Company to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent liabilities. These estimates and assumptions are based on management's best estimates and judgment. On an ongoing basis, the Company evaluates its estimates and assumptions, including those related to impairment of long-lived assets, stock-based compensation, the fair value of financial instruments including warrants, allowance for doubtful accounts, inventory valuation, taxes and contingent and accrued liabilities. The Company bases its estimates on historical experience and various other factors, including the current economic environment, which it believes to be reasonable under the circumstances. Estimates and assumptions are adjusted when facts and circumstances dictate. Actual results may differ from these estimates under different assumptions and conditions. Management believes that the estimates are reasonable.
Revenue	Revenue Adoption of Recent Accounting Pronouncement Effective January 1, 2018, the Company adopted the Financial Accounting Standards Board ("FASB") Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers (Topic 606). ASU 2014-09 supersedes the revenue recognition requirements in FASB Accounting Standards Codification ("ASC") 605, Revenue Recognition, and is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. It also requires additional disclosure about the nature, amount, timing, and uncertainty of revenue, cash flows arising from customer contracts, including significant judgments and changes in judgments, and assets recognized from costs incurred to obtain or fulfill a contract. The adoption of ASU 2014-09, using the modified retrospective approach, had no significant impact on the Company's results of operations, cash flows or financial position. Revenue Recognition Net sales include products and shipping and handling charges, net of estimates for product returns as well as royalties earned under licensing agreements. Revenue for products and shipping and handling charges are measured as the amount of consideration the Company expects to receive in exchange for transferring products. All revenue is recognized when the Company satisfies its performance obligations under the contract. The Company recognizes revenue by transferring the promised products to the customer, with revenue recognized at the point in time the customer obtains control of the products. The Company recognizes revenue for shipping and handling charges at the time the products are delivered to or picked up by the customer. The Company estimates product returns based on historical return rates. The majority of the Company's contracts have a single performance obligation and are short term in nature. The Company recognizes revenue for its usage based royalties when the usage has occurred. Sales taxes and value added taxes in foreign jurisdictions that are collected from customers and remitted to governmental authorities are accounted for on a net basis and therefore excluded from the transaction price and net sales.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In February 2016, the FASB issued ASU 2016-2, Leases (Topic 842) . ASU 2016-2 requires the recognition of lease assets and lease liabilities by lessees for those leases classified as operating leases under previous U.S. generally accepted accounting principles. It is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. Entities are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The Company is evaluating the impact of adoption of ASU 2016-2 on its consolidated financial statements. In July 2017, the FASB issued ASU 2017-11, Earnings Per Share (Topic 260), Distinguishing Liabilities from Equity (Topic 480), Derivatives and Hedging (Topic 815). The amendments in Part I of this Update change the classification analysis of certain equity-linked financial instruments (or embedded features) with down round features. The amendments in Part II of this Update recharacterize the indefinite deferral of certain provisions of Topic 480 that now are presented as pending content in the Codification, to a scope exception. Those amendments do not have an accounting effect. For public business entities, the amendments in Part I of this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted for all entities, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. The Company is currently evaluating the impact that ASU 2017-11 will have on its consolidated financial statements.

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2018
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories consists of the following (in thousands): June 30, 2018 December 31, 2017 Raw materials $ 657 $ 721 Work in process 226 322 Finished goods 243 312 Total inventories $ 1,126 $ 1,355

Intangible Assets (Tables)

Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of intangible assets	Intangible assets consist of the following (in thousands): Useful Life in Years June 30, 2018 December 31, 2017 Trade name 15 - 20 $ 1,208 $ 1,208 Patents and know-how 5 - 12 4,113 4,113 Customer relationships 4 - 8 730 750 6,051 6,071 Less accumulated amortization (5,081 ) (5,020 ) $ 970 $ 1,051
Schedule of estimated amortization expense	Estimated amortization expense for each of the next five years is as follows (in thousands): Years ending December 31: Remainder of 2018 $ 81 2019 162 2020 162 2021 162 2022 142 Thereafter 261 $ 970

Accrued Expenses and Other Cu25

Accrued Expenses and Other Current Liabilities (Tables)	6 Months Ended
	Jun. 30, 2018
Accrued Expenses and Other Current Liabilities
Schedule of accrued expenses and other current liabilities	Accrued expenses and other current liabilities consist of the following (in thousands): June 30, 2018 December 31, 2017 Accrued salaries and benefits $ 550 $ 560 Accrued severance and other charges (1) — 28 Accrued warranty (2) 66 125 Warrant liability (3) 135 669 Other 135 157 $ 886 $ 1,539 (1) For additional information, refer to Note 7, “Severance and Other Charges”. (2) For additional information, refer to Note 8, “Accrued Warranty”. (3) For additional information, refer to Note 9, “Warrants” and Note 10, “Fair Value Measurements”.

Severance and Other Charges (Ta

Severance and Other Charges (Tables)	6 Months Ended
	Jun. 30, 2018
Restructuring and Related Activities [Abstract]
Schedule of severance and other charges	Severance and other charges consist of employee severance expense and lease exit costs, and the following summarizes the activity (in thousands): Severance Lease Exit Costs Total December 31, 2016 $ 718 $ 1,020 $ 1,738 Provision — (619 ) (619 ) Payments (482 ) (237 ) (719 ) June 30, 2017 $ 236 $ 164 $ 400 Severance Lease Exit Costs Total December 31, 2017 $ 28 $ — $ 28 Provision — — — Payments (28 ) — (28 ) June 30, 2018 $ — $ — $ —

Accrued Warranty (Tables)

Accrued Warranty (Tables)	6 Months Ended
	Jun. 30, 2018
Product Warranties Disclosures [Abstract]
Schedule of accrual for product warranty	The following summarizes the activity in the Company’s accrual for product warranty (in thousands): Six Months Ended 2018 2017 Balance at beginning of period $ 125 $ 338 Accrued warranty expense/(benefit) (24 ) 121 Warranty claims paid (35 ) (147 ) Balance at end of period $ 66 $ 312

Warrants (Tables)

Warrants (Tables)	6 Months Ended
	Jun. 30, 2018
Schedule of warrants activity	Warrants outstanding and exercisable are summarized as follows: Shares(1) Weighted Average Exercise Price Range of Exercise Prices Outstanding at December 31, 2017 904,470 $ 5.27 $2.20-$21.00 Exercised — — — Expired (6,920 ) 6.25 — Outstanding at June 30, 2018 897,550 $ 5.26 $2.20-$21.00 Exercisable at June 30, 2018 897,550 $ 5.26 $2.20-$21.00 (1) Outstanding and exercisable information includes 15,000 equity-classified warrants.
Black Scholes
Schedule of Share Based Payment Award Warrants Valuation Assumptions	The assumptions used in the Black-Scholes option-pricing model to estimate the fair value of the warrant liability as of June 30, 2018 were as follows: Expected volatility 96.1% - 104.9% Risk-free interest rate 2.38% - 2.65% Dividend yield — Expected life in years 1.26 - 3.46
Monte Carlo Simulation Model
Schedule of Share Based Payment Award Warrants Valuation Assumptions	The assumptions used in the Monte Carlo simulation model to estimate the fair value of the warrant liability as of June 30, 2018 were as follows: Expected volatility 13.2% - 101.9% Risk-free interest rate 0.18% - 2.4% Dividend yield — Expected life in years 0.01 - 1.36

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured at fair value on a recurring basis	Assets and liabilities measured at fair value on the Company’s balance sheet on a recurring basis include the following at June 30, 2018 and December 31, 2017 (in thousands): Warrant Liability Level 1 Level 2 Level 3 June 30, 2018 — — $ 135 December 31, 2017 — — $ 669
Schedule of reconciliation of warrant liability	The following is a reconciliation of the warrant liability, included in accrued expenses and other current liabilities in the accompanying unaudited condensed consolidated balance sheets, measured at fair value using Level 3 inputs (in thousands): Six Months Ended 2018 2017 Balance at beginning of period $ 669 $ 1,226 Exercise of common stock warrants — — Remeasurement of common stock warrants (534 ) 334 Balance at end of period $ 135 $ 1,560

Geographic Information (Tables)

Geographic Information (Tables)	6 Months Ended
	Jun. 30, 2018
Segment Reporting [Abstract]
Schedule of net sales by geographic region	Net sales by geographic region based on the location of the customer is as follows (in thousands): Three Months Ended Six Months Ended 2018 2017 2018 2017 United States $ 894 $ 2,063 $ 1,661 $ 4,585 International: Canada 339 475 603 741 Europe 1,172 1,018 2,290 1,946 Asia 28 — 76 133 Total international 1,539 1,493 2,969 2,820 Total revenues $ 2,433 $ 3,556 $ 4,630 $ 7,405

Discontinued Operations (Tables

Discontinued Operations (Tables)	6 Months Ended
	Jun. 30, 2018
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations	The following table presents the major classes of assets and liabilities of discontinued operations in the consolidated balance sheets as of June 30, 2018 and December 31, 2017 (in thousands). June 30, 2018 December 31, 2017 Assets Accounts receivable, net $ 325 $ 220 Inventories 221 1,292 Prepaid expenses and other current assets 53 12 Current assets of discontinued operations 599 1,524 Property and equipment, net — 300 Other assets 105 124 Assets of discontinued operations 105 424 Total assets of discontinued operations 704 1,948 Liabilities Accounts payable 421 375 Accrued expenses and other current liabilities 907 2,046 Current liabilities of discontinued operations 1,328 2,421 Other liabilities 462 — Net liabilities of discontinued operations $ 1,086 $ 473 The following table presents revenue and expense information for discontinued operations for the three and six months ended June 30, 2018 and 2017 (in thousands). Three Months Ended Six Months Ended 2018 2017 2018 2017 Revenues $ 574 $ 4,843 $ 3,289 $ 9,208 Pre-tax (loss) income (481 ) 595 89 1,469 Income tax expense — — — — Net (loss) income from discontinued operations $ (481 ) $ 595 $ 89 $ 1,469

Liquidity and Going Concern - N

Liquidity and Going Concern - Narrative (Details) - USD ($)	1 Months Ended
	Jul. 31, 2018	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016	May 19, 2015
Liquidity and Going Concern
Accumulated deficit		$ 230,592,000	$ 228,346,000
Cash		1,779,000	$ 2,807,000	$ 1,611,000	$ 7,839,000
Shelf Registration
Liquidity and Going Concern
Aggregate securities authorized						$ 50,000,000
Aggregate securities sold		$ 3,100,000
Subsequent Event
Liquidity and Going Concern
Shares Sold In Rights Offering	$ 2,200,000

Inventories - Summary of Invent

Inventories - Summary of Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 657	$ 721
Work in process	226	322
Finished goods	243	312
Total inventories	$ 1,126	$ 1,355

Intangible Assets - Intangible

Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Finite-lived intangible assets
Intangible assets, gross	$ 6,051		$ 6,051		$ 6,071
Less accumulated amortization	(5,081)		(5,081)		(5,020)
Intangible assets, net	970		970		1,051
Amortization of intangible assets	100	$ 100	100	$ 200
Trade name
Finite-lived intangible assets
Intangible assets, gross	1,208		1,208		1,208
Patents and know-how
Finite-lived intangible assets
Intangible assets, gross	4,113		4,113		4,113
Customer relationships
Finite-lived intangible assets
Intangible assets, gross	$ 730		$ 730		$ 750
Minimum | Trade name
Finite-lived intangible assets
Useful life			15 years
Minimum | Patents and know-how
Finite-lived intangible assets
Useful life			5 years
Minimum | Customer relationships
Finite-lived intangible assets
Useful life			4 years
Maximum | Trade name
Finite-lived intangible assets
Useful life			20 years
Maximum | Patents and know-how
Finite-lived intangible assets
Useful life			12 years
Maximum | Customer relationships
Finite-lived intangible assets
Useful life			8 years

Intangible Assets - Amortizatio

Intangible Assets - Amortization Expense (Details) $ in Thousands	Jun. 30, 2018USD ($)
Estimated amortization expense for each of the next five years
Remainder of 2018	$ 81
2,019	162
2,020	162
2,021	162
2,022	142
Thereafter	261
Finite-Lived Intangible Assets, Net	$ 970

Accrued Expenses and Other Cu36

Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Accrued Expenses and Other Current Liabilities
Accrued salaries and benefits	$ 550	$ 560
Accrued severance and other charges	0	28
Accrued warranty	66	125	$ 312	$ 338
Warrant liability	135	669
Other	135	157
Accrued expenses and other current liabilities	$ 886	$ 1,539

Severance and Other Charges - S

Severance and Other Charges - Summary of Activity (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Severance and other charges
Balance, start of period	$ 28	$ 1,738
Provision	0	(619)
Payments	(28)	(719)
Balance, end of period	0	400
Severance
Severance and other charges
Balance, start of period	28	718
Provision	0	0
Payments	(28)	(482)
Balance, end of period	0	236
Lease Exit Costs
Severance and other charges
Balance, start of period	0	1,020
Provision	0	(619)
Payments	0	(237)
Balance, end of period	$ 0	$ 164

Accrued Warranty - Summary of A

Accrued Warranty - Summary of Activity (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Product Warranty Liability [Line Items]
Balance at beginning of period	$ 125	$ 338
Accrued warranty expense/(benefit)	(24)	121
Warranty claims paid	(35)	(147)
Balance at end of period	$ 66	$ 312
Minimum
Product Warranty Liability [Line Items]
Warrants period	1 year
Maximum
Product Warranty Liability [Line Items]
Warrants period	5 years

Warrants - Activity (Details)

Warrants - Activity (Details) - $ / shares	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Shares
Outstanding at beginning of period (in shares)	904,470
Exercised (in shares)	0
Expired (in shares)	(6,920)
Outstanding at end of period (in shares)	897,550
Exercisable at end of period (in shares)	897,550
Weighted Average Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 5.27
Expired ( in dollars per share)	6.25
Outstanding at end of period (in dollars per share)	5.26
Exercisable at end of period (in dollars per share)	$ 5.26
Range of Exercise Prices
Temporary equity, shares outstanding (in shares)	15,000	15,000
Minimum
Range of Exercise Prices
Outstanding at beginning of period (in dollars per share)	$ 2.20
Outstanding at end of period (in dollars per share)	2.20
Exercisable (in dollars per share)	2.20
Maximum
Range of Exercise Prices
Outstanding at beginning of period (in dollars per share)	21
Outstanding at end of period (in dollars per share)	21
Exercisable (in dollars per share)	$ 21

Warrants - Fair Value of Warran

Warrants - Fair Value of Warrant Liabilities (Details)	6 Months Ended
	Jun. 30, 2018
Black Scholes
Fair value assumptions and methodology for assets and liabilities
Dividend yield	0.00%
Monte Carlo Simulation Model
Fair value assumptions and methodology for assets and liabilities
Dividend yield	0.00%
Measurement Input, Price Volatility | Minimum | Black Scholes
Fair value assumptions and methodology for assets and liabilities
Expected volatility	96.10%
Measurement Input, Price Volatility | Minimum | Monte Carlo Simulation Model
Fair value assumptions and methodology for assets and liabilities
Expected volatility	13.20%
Measurement Input, Price Volatility | Maximum | Black Scholes
Fair value assumptions and methodology for assets and liabilities
Expected volatility	104.90%
Measurement Input, Price Volatility | Maximum | Monte Carlo Simulation Model
Fair value assumptions and methodology for assets and liabilities
Expected volatility	101.90%
Measurement Input, Risk Free Interest Rate | Minimum | Black Scholes
Fair value assumptions and methodology for assets and liabilities
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum	2.38%
Measurement Input, Risk Free Interest Rate | Minimum | Monte Carlo Simulation Model
Fair value assumptions and methodology for assets and liabilities
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum	0.18%
Measurement Input, Risk Free Interest Rate | Maximum | Black Scholes
Fair value assumptions and methodology for assets and liabilities
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum	2.65%
Measurement Input, Risk Free Interest Rate | Maximum | Monte Carlo Simulation Model
Fair value assumptions and methodology for assets and liabilities
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum	2.40%
Measurement Input, Expected Term | Minimum | Black Scholes
Fair value assumptions and methodology for assets and liabilities
Expected life in years	1 year 3 months 4 days
Measurement Input, Expected Term | Minimum | Monte Carlo Simulation Model
Fair value assumptions and methodology for assets and liabilities
Expected life in years	4 days
Measurement Input, Expected Term | Maximum | Black Scholes
Fair value assumptions and methodology for assets and liabilities
Expected life in years	3 years 5 months 16 days
Measurement Input, Expected Term | Maximum | Monte Carlo Simulation Model
Fair value assumptions and methodology for assets and liabilities
Expected life in years	1 year 4 months 10 days

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Liabilities measured at fair value on a recurring basis
Warrant liability	$ 135,000	$ 669,000
Liability transfers from Level 1 to Level 2		0
Liability transfers from Level 2 to Level 1	0
Level 1
Liabilities measured at fair value on a recurring basis
Warrant liability	0	0
Level 2
Liabilities measured at fair value on a recurring basis
Warrant liability	0	0
Level 3
Liabilities measured at fair value on a recurring basis
Warrant liability	$ 135,000	$ 669,000

Fair Value Measurements - Recon

Fair Value Measurements - Reconciliation of Warrant Liability (Details) - Warrants - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Reconciliation of warrant liability and embedded derivative
Balance at beginning of period	$ 669	$ 1,226
Exercise of common stock warrants	0	0
Remeasurement of common stock warrants	(534)	334
Balance at end of period	$ 135	$ 1,560

Loss per Share (Details)

Loss per Share (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Potentially dilutive common stock equivalents excluded from computation (in shares)	1.9	2.1	1.9	2.1

Commitments and Contingencies (

Commitments and Contingencies (Details) - Applied Utility Systems Inc - Sales And Use Tax Audit - USD ($) $ in Millions	1 Months Ended
	Oct. 31, 2015	Jun. 30, 2018	Jul. 21, 2014	Dec. 31, 2013
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss				$ 1.5
Loss contingency, original basis for determining sales taxes owed			$ 12.2
Loss contingency, adjusted basis for determining sales taxes owed			$ 9
Discontinued operation income tax examination settlement of case amount offered	$ 0.1
Maximum
Loss Contingencies [Line Items]
Loss contingency, estimate of possible loss		$ 0.9

Geographic Information - Net Sa

Geographic Information - Net Sales by Geographic Region based on Location of Sales Organization (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net sales by geographic region
Revenues	$ 2,433	$ 3,556	$ 4,630	$ 7,405
United States
Net sales by geographic region
Revenues	894	2,063	1,661	4,585
Canada
Net sales by geographic region
Revenues	339	475	603	741
Europe
Net sales by geographic region
Revenues	1,172	1,018	2,290	1,946
Asia
Net sales by geographic region
Revenues	28	0	76	133
Total international
Net sales by geographic region
Revenues	$ 1,539	$ 1,493	$ 2,969	$ 2,820

Concentrations - Narrative (Det

Concentrations - Narrative (Details) - Customer Concentration Risk	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
One additional OEM customer | Sales Revenue, Net
Concentration Risk [Line Items]
Concentration risk, percentage			10.00%
Supplier One | Material Purchases
Concentration Risk [Line Items]
Concentration risk, percentage	43.00%		56.00%
Supplier Two | Material Purchases
Concentration Risk [Line Items]
Concentration risk, percentage	11.00%		10.00%
Supplier Three | Material Purchases
Concentration Risk [Line Items]
Concentration risk, percentage		35.00%		28.00%
Supplier Four | Material Purchases
Concentration Risk [Line Items]
Concentration risk, percentage		15.00%		14.00%
Supplier Five | Material Purchases
Concentration Risk [Line Items]
Concentration risk, percentage		14.00%		11.00%

Discontinued Operations - Held

Discontinued Operations - Held for Disposal (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Assets
Accounts receivable, net	$ 325	$ 220
Inventories	221	1,292
Prepaid expenses and other current assets	53	12
Current assets of discontinued operations	599	1,524
Property and equipment, net	0	300
Other assets	105	124
Assets of discontinued operations	105	424
Total assets of discontinued operations	704	1,948
Liabilities
Accounts payable	421	375
Accrued expenses and other current liabilities	907	2,046
Current liabilities of discontinued operations	1,328	2,421
Other liabilities	462	0
Net liabilities of discontinued operations	$ 1,086	$ 473

Discontinued Operations - Reven

Discontinued Operations - Revenues and Expense Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Discontinued Operations and Disposal Groups [Abstract]
Revenues	$ 574	$ 4,843	$ 3,289	$ 9,208
Pre-tax (loss) income	(481)	595	89	1,469
Income tax expense	0	0	0	0
Net (loss) income from discontinued operations	$ (481)	$ 595	$ 89	$ 1,469

Subsequent Event (Details)

Subsequent Event (Details) - Subsequent Event $ / shares in Units, $ in Millions	Jul. 25, 2018USD ($)$ / sharesshares
Subsequent Event [Line Items]
Common stock, shares issued | shares	4,427,563
Sale of stock, price per share | $ / shares	$ 0.50
Proceeds from issuance of common stock | $	$ 2.2