CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Total	COMMON STOCK	ADDITIONAL PAID-IN CAPITAL	RETAINED DEFICIT	TREASURY STOCK
BALANCE at Dec. 31, 2012	$ 79,842,117	$ 46,259	$ 246,007,941	$ (165,343,525)	$ (868,558)
BALANCE (in shares) at Dec. 31, 2012	46,063,822	46,063,822
Increase (Decrease) in Stockholders' Equity
Current period net loss	(4,193,080)			(4,193,080)
Share-based compensation	1,390,585	692	1,389,893
Share-based compensation (in shares)		692,388
Treasury stock	(268,650)				(268,650)
Treasury stock (in shares)		(84,224)
BALANCE at Jun. 30, 2013	$ 76,770,972	$ 46,951	$ 247,397,834	$ (169,536,605)	$ (1,137,208)
BALANCE (in shares) at Jun. 30, 2013	46,671,986	46,671,986

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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- Definition

Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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- Definition

Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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