CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Deficit
Balance at Dec. 31, 2011	$ 11,898,000	$ 74,000	$ 73,869,000	$ (25,000)	$ (62,020,000)
Balance (in shares) at Dec. 31, 2011		74,306,895		50,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	2,539,000		2,539,000
Exercise of stock options	1,053,000	1,000	1,052,000
Exercise of stock options (in shares)		843,863
Exercise of warrants	6,001,000	8,000	5,993,000
Exercise of warrants (in shares)		7,959,767
Common stock issued for 5% convertible note	0
Repurchase warrants	(1,000)		(1,000)
Cashless exercise of warrants (in shares)		216,085
Common stock issued for accrued director fees	184,000		184,000
Common stock issued for accrued director fees (in shares)		167,086
Common stock issued for earn-out liability	3,186,000	3,000	3,183,000
Common stock issued for earn-out liability (in shares)		2,632,576
Discount on beneficial conversion feature	514,000		514,000
Common stock issued for acquisition note	893,000	1,000	892,000
Common stock issued for acquisition note (in shares)	893,267	893,267
Conversion of line of credit with related party	1,403,000	1,000	1,402,000
Conversion of line of credit with related party (in shares)		1,403,630
Shares issued for services performed	0
Net income (loss)	(7,663,000)				(7,663,000)
Balance at Dec. 31, 2012	20,007,000	88,000	89,627,000	(25,000)	(69,683,000)
Balance (in shares) at Dec. 31, 2012		88,423,169		50,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	6,010,000		6,010,000
Exercise of stock options	1,981,000	2,000	1,979,000
Exercise of stock options (in shares)		1,958,674
Exercise of warrants	2,108,000	2,000	2,106,000
Exercise of warrants (in shares)		1,844,352
Common stock issued for 5% convertible note	5,272,000	5,000	5,267,000
Common stock issued for 5% convertible note (n shares)		5,272,004
Common stock issued for accrued director fees	0
Common stock issued for earn-out liability	5,792,000	1,000	5,791,000
Common stock issued for earn-out liability (in shares)	2,632,576	1,174,915
Common stock issued for acquisition note (in shares)	893,267
Conversion of line of credit with related party	0
Conversion of line of credit with related party (in shares)	1,403,630
Public offering of common stock, net of expenses	36,510,000	6,000	36,504,000
Public offering of common stock, net of expenses (in shares)		5,750,000
Issuance of restricted stock (in shares)		2,500
Shares issued for services performed	0
Net income (loss)	(4,112,000)				(4,112,000)
Balance at Dec. 31, 2013	73,568,000	104,000	147,284,000		(73,795,000)
Balance (in shares) at Dec. 31, 2013		104,425,614
Balance at Nov. 30, 2013
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Public offering of common stock, net of expenses (in shares)		5,750,000
Balance at Dec. 31, 2013	73,568,000	104,000	147,284,000	(25,000)	(73,795,000)
Balance (in shares) at Dec. 31, 2013		104,425,614		50,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation expense	11,453,000		11,453,000
Exercise of stock options	2,470,000	2,000	2,468,000
Exercise of stock options (in shares)	1,653,690	1,653,690
Exercise of warrants	1,113,000	1,000	1,112,000
Exercise of warrants (in shares)		1,242,416
Common stock issued for 5% convertible note	0
Common stock issued for 5% convertible note (n shares)	5,272,004
Common stock issued for accrued director fees	0
Common stock issued for earn-out liability	0
Common stock issued for earn-out liability (in shares)	1,174,915
Common stock issued for acquisition note (in shares)	893,267
Conversion of line of credit with related party	0
Issuance of restricted stock		1,000	(1,000)
Issuance of restricted stock (in shares)		1,438,569
Shares issued for services performed	117,000		117,000
Shares issued for services performed (in shares)	15,958	15,958
Stock repurchase	(5,612,000)			(5,612,000)
Stock repurchase (in shares)	940,000			936,636
Net income (loss)	6,220,000				6,220,000
Balance at Dec. 31, 2014	$ 89,329,000	$ 108,000		$ (5,637,000)	$ (67,575,000)
Balance (in shares) at Dec. 31, 2014		108,776,247	162,433,000	986,636