CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Issuance During Period 1st [Member]
Issuance of common stock (in shares)	100
Common stock, price per share	$ 5.07
Issuance During Period 2nd [Member]
Issuance of common stock (in shares)	2,463,537
Common stock, price per share	$ 4.50
Issuance of common stock, offering costs	$ 777
Issuance During Period Three [Member]
Issuance of common stock (in shares)	11,173
Common Stock Option Shares	27,915
Issuance During Period Four [Member]
Issuance of common stock (in shares)	2,145,636
Common stock, price per share	$ 11.00
Issuance of common stock, offering costs	$ 586
Stock Option [Member] | Maximum [Member]
Common stock, price per share	$ 10.88
Stock Option [Member] | Minimum [Member]
Common stock, price per share	$ 1.33
Series B Warrants [Member]
Exercise of 121,079 Series B Warrants to purchase common stock for cash @ $2.49 per share (in shares)	121,079
Common stock, price per share	$ 2.49