Consolidated Statements of Stockholders' (Deficit) Equity (USD $)	Total	Common stock	Additional paid-in capital	Accumulated deficit	Treasury stock	Accumulated other comprehensive loss	Stockholders' equity
Beginning Balance, amount at Dec. 31, 2011		$ 54,931	$ 157,321,564	$ (85,925,798)	$ (46,916,339)	$ (1,717,420)
Exercise of stock awards		685	737,500
Beneficial conversion feature			0
Accretion of Series A redeemable convertible preferred stock	0		0
Dividends on Series A redeemable convertible preferred stock	0		0
Share-based compensation to non-employees			27,487
Share-based compensation to employees			4,587,282
Net loss	(14,984,321)			(14,984,321)
Shares received for Estate litigation settlement					0
Purchase of shares					0
Other comprehensive income (loss), net						67,370
Ending Balance, amount at Dec. 31, 2012		55,616	162,673,833	(100,910,119)	(46,916,339)	(1,650,050)	13,252,941
Exercise of stock awards		421	697,081
Beneficial conversion feature			1,951,266
Accretion of Series A redeemable convertible preferred stock	(127,504)		(127,504)
Dividends on Series A redeemable convertible preferred stock	(216,379)		(216,379)
Share-based compensation to non-employees			37,379
Share-based compensation to employees			1,668,050
Net loss	(10,932,590)			(10,932,590)
Shares received for Estate litigation settlement					0
Purchase of shares					0
Other comprehensive income (loss), net						(112,337)
Ending Balance, amount at Dec. 31, 2013		56,037	166,683,726	(111,842,709)	(46,916,339)	(1,762,387)	6,218,328
Exercise of stock awards		323	24,361
Beneficial conversion feature			0
Accretion of Series A redeemable convertible preferred stock	(493,363)		(493,363)
Dividends on Series A redeemable convertible preferred stock	(747,616)		(747,616)
Share-based compensation to non-employees			1,173
Share-based compensation to employees			1,465,010
Net loss	(7,211,821)			(7,211,821)
Shares received for Estate litigation settlement					(5,293,319)
Purchase of shares	(4,685,401)				(4,685,401)
Other comprehensive income (loss), net						251,097
Ending Balance, amount at Dec. 31, 2014		$ 56,360	$ 166,933,291	$ (119,054,530)	$ (56,895,059)	$ (1,511,290)	$ (10,471,228)