Shareholders' Equity

3 Months Ended

Mar. 31, 2015

Shareholders’ Equity [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

Shareholders' Equity

Equity Issuances

In March 2014, the Company entered into a common stock purchase agreement (the “Purchase Agreement”) with Aspire Capital Fund, LLC, an Illinois limited liability company (“Aspire Capital”), which provides that, subject to certain terms and conditions, Aspire Capital is committed to purchase up to an aggregate of $30.0 million worth of shares (up to a maximum of 5.7 million shares) of the Company’s common stock over the 24-month term. At the Company’s discretion, it may present Aspire Capital with purchase notices from time to time to purchase the Company’s common stock, provided certain price and other requirements are met. The purchase price for the shares of stock is based upon one of two formulas set forth in the Purchase Agreement depending on the type of purchase notice the Company submits to Aspire Capital, and is based on market prices of the Company’s common stock (in the case of regular purchases) or a discount of 5% applied to volume weighted average prices (in the case of VWAP purchases), in each case as determined by parameters defined in the Purchase Agreement. As consideration for entering into the Purchase Agreement, we issued 150,000 shares of our common stock to Aspire Capital. During the three months endedMarch 31, 2015, the Company issued 2.2 million shares of common stock under the provisions of the Purchase Agreement with Aspire for gross proceeds of approximately $7.4 million. As of March 31, 2015, the remaining amount available to the Company under the Purchase Agreement was $11.7 million, subject to an issuance limit of 1.4 million shares.

Stock Options and Warrants

The following table summarizes the activity for stock options and warrants for the three months endedMarch 31, 2015:

	Stock Options							Warrants
	Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value (In Thousands)		Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value (In Thousands)
Outstanding at December 31, 2014	4,427,234		$	9.19	6.93	$	28.6	3,550,956		$	14.12	2.12	$	1.0
Changes during the period:
Granted	2,121,488		$	3.68				—		$	—
Exercised	—		$	—				—		$	—
Forfeited	(81,097	)	$	6.92				—		$	—
Expired	(96,092	)	$	7.18				(5,200	)	$	14.20
Outstanding at March 31, 2015	6,371,533		$	7.41	7.70	$	—	3,545,756		$	14.12	1.88	$	—
Vested at March 31, 2015 or expected to vest in the future	5,841,147		$	7.67	7.52	$	—	3,545,756		$	14.12	1.88	$	—
Vested at March 31, 2015	3,720,160		$	9.11	6.62	$	—	3,545,756		$	14.13	1.88	$	—

Restricted Stock

During the three months endedMarch 31, 2015 and 2014, the Company issued restricted stock for services as follows ($ in thousands, except share data):

	Three Months Ended March 31,
	2015		2014
Number of Restricted Stock Issued	818,004		329,698
Value of Restricted Stock Issued	$	2,955.8	$	2,511.7

The weighted average estimated fair value of restricted stock issued for services in the three months endedMarch 31, 2015 and 2014 was $3.61 and $7.62 per share, respectively. The fair value of the restricted stock was determined using the Company’s closing stock price on the date of issuance. The vesting terms of restricted stock issuances are generally within one year.