Liquidity and Going Concern	3 Months Ended
Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Substantial Doubt about Going Concern [Text Block]	2. Liquidity and Going Concern The accompanying consolidated financial statements have been prepared assuming the Company will continue as a going concern. Therefore, the 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 $194.1 million at March 31, 2015. The Company has funded its operations through asset sales, credit facilities and other borrowings and equity sales. At March 31, 2015, the Company had $4.3 million in cash, and based upon the Company’s current and anticipated usage of cash resources, it may require additional financing in the form of funding from outside sources during 2015. The Company will evaluate the amount of cash needed, and the manner in which such cash will be raised, on an ongoing basis. The Company’s continuation as a going concern is dependent upon its ability to obtain adequate additional 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 for the next twelve months. The Company has a $7.5 million secured demand financing facility backed by its receivables and inventory with Faunus Group International, Inc. (“FGI”) that terminates on August 15, 2015 and may be extended at the Company’s option for additional one-year terms. However, FGI can cancel the facility at any time. At March 31, 2015, the Company had $3.1 million in borrowings outstanding under this facility with $4.4 million available, subject to the availability of eligible accounts receivable and inventory balances for collateral. However, there is no guarantee that the Company will be able to borrow to the full limit of $7.5 million if FGI chooses not to finance a portion of its receivables or inventory. On May 15, 2012, the Company filed a shelf registration statement on Form S-3 with the Securities and Exchange Commission (“SEC”) (the “Shelf Registration”), which was declared effective by the SEC on May 21, 2012. The Shelf Registration permits the Company to sell, from time to time, up to an aggregate of $50.0 million of various securities, provided that the Company may not sell its securities in a primary offering pursuant to the Shelf Registration or any other registration statement on Form S-3 with a value exceeding one-third of its public float in any 12-month period (unless the Company’s public float rises to $75.0 million or more). On July 3, 2013, the Company sold 1,730,000 units pursuant to the Shelf Registration for $1.25 per unit, with each unit consisting of one share of common stock and one half of a warrant to purchase one share of common stock with an exercise price of $1.25 per share. The Company received net proceeds of $1.7 million after deducting discounts and commissions to the underwriter and offering expenses. In the first quarter of 2014, warrant holders exercised an aggregate of 800,000 of the warrants issued in this offering at an exercise price of $1.25 per share for proceeds of $1.0 million. On April 4, 2014, the Company sold 2,030,000 units pursuant to the Shelf Registration for $3.40 per unit, with each unit consisting of one share of common stock and 0.4 of one warrant to purchase one share of common stock with an exercise price of $4.20 per share. The Company received net proceeds of $6.1 million after deducting placement agent fees and other offering expenses. On October 20, 2014, the Company completed the sale of its Reno, Nevada-based custom fabricated exhaust parts and accessories business (the “Reno Business”) for $1.3 million in cash. On November 4, 2014, the Company entered into subscription agreements to sell 1,385,000 shares of common stock and warrants to purchase up to an aggregate of 388,393 shares of common stock with an exercise price of $3.25 per share (the “Series A Warrants”), for a combined purchase price of $2.80 per share and 0.28 of one Series A Warrant, and other warrants to purchase up to an aggregate of 168,571 shares of common stock with an exercise price of $0.01 per share (the “Series B Warrants”) for a purchase price of $2.79 per Series B Warrant, pursuant to the Shelf Registration. The Company received net proceeds of $3.8 million after deducting placement agent fees and other offering expenses. On November 11, 2014, the Company and Kanis S.A. entered into a letter agreement whereby Kanis S.A. agreed to amend the terms of the outstanding loans, in the aggregate principal amount of $7.5 million, made to the Company, such that (i) the maturity dates of all outstanding loans were extended to October 1, 2016; and (ii) the early redemption feature applicable to one of the outstanding loans was removed.

Liquidity and Going Concern

3 Months Ended

Mar. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Substantial Doubt about Going Concern [Text Block]

2. Liquidity and Going Concern

The accompanying consolidated financial statements have been prepared assuming the Company will continue as a going concern. Therefore, the 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 $194.1 million at March 31, 2015. The Company has funded its operations through asset sales, credit facilities and other borrowings and equity sales.

At March 31, 2015, the Company had $4.3 million in cash, and based upon the Company’s current and anticipated usage of cash resources, it may require additional financing in the form of funding from outside sources during 2015. The Company will evaluate the amount of cash needed, and the manner in which such cash will be raised, on an ongoing basis. The Company’s continuation as a going concern is dependent upon its ability to obtain adequate additional 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 for the next twelve months.

The Company has a $7.5 million secured demand financing facility backed by its receivables and inventory with Faunus Group International, Inc. (“FGI”) that terminates on August 15, 2015 and may be extended at the Company’s option for additional one-year terms. However, FGI can cancel the facility at any time. At March 31, 2015, the Company had $3.1 million in borrowings outstanding under this facility with $4.4 million available, subject to the availability of eligible accounts receivable and inventory balances for collateral. However, there is no guarantee that the Company will be able to borrow to the full limit of $7.5 million if FGI chooses not to finance a portion of its receivables or inventory.

On May 15, 2012, the Company filed a shelf registration statement on Form S-3 with the Securities and Exchange Commission (“SEC”) (the “Shelf Registration”), which was declared effective by the SEC on May 21, 2012. The Shelf Registration permits the Company to sell, from time to time, up to an aggregate of $50.0 million of various securities, provided that the Company may not sell its securities in a primary offering pursuant to the Shelf Registration or any other registration statement on Form S-3 with a value exceeding one-third of its public float in any 12-month period (unless the Company’s public float rises to $75.0 million or more).

On July 3, 2013, the Company sold 1,730,000 units pursuant to the Shelf Registration for $1.25 per unit, with each unit consisting of one share of common stock and one half of a warrant to purchase one share of common stock with an exercise price of $1.25 per share. The Company received net proceeds of $1.7 million after deducting discounts and commissions to the underwriter and offering expenses. In the first quarter of 2014, warrant holders exercised an aggregate of 800,000 of the warrants issued in this offering at an exercise price of $1.25 per share for proceeds of $1.0 million.

On April 4, 2014, the Company sold 2,030,000 units pursuant to the Shelf Registration for $3.40 per unit, with each unit consisting of one share of common stock and 0.4 of one warrant to purchase one share of common stock with an exercise price of $4.20 per share. The Company received net proceeds of $6.1 million after deducting placement agent fees and other offering expenses.

On October 20, 2014, the Company completed the sale of its Reno, Nevada-based custom fabricated exhaust parts and accessories business (the “Reno Business”) for $1.3 million in cash.

On November 4, 2014, the Company entered into subscription agreements to sell 1,385,000 shares of common stock and warrants to purchase up to an aggregate of 388,393 shares of common stock with an exercise price of $3.25 per share (the “Series A Warrants”), for a combined purchase price of $2.80 per share and 0.28 of one Series A Warrant, and other warrants to purchase up to an aggregate of 168,571 shares of common stock with an exercise price of $0.01 per share (the “Series B Warrants”) for a purchase price of $2.79 per Series B Warrant, pursuant to the Shelf Registration. The Company received net proceeds of $3.8 million after deducting placement agent fees and other offering expenses.

On November 11, 2014, the Company and Kanis S.A. entered into a letter agreement whereby Kanis S.A. agreed to amend the terms of the outstanding loans, in the aggregate principal amount of $7.5 million, made to the Company, such that (i) the maturity dates of all outstanding loans were extended to October 1, 2016; and (ii) the early redemption feature applicable to one of the outstanding loans was removed.