Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning balance at Dec. 31, 2011	$ 19,039	$ 238	$ 42,869	$ (24,068)
Beginning balance (in shares) at Dec. 31, 2011		23,783,106
Issuance of common stock in connection with asset purchase (in shares)		160,305
Issuance of common stock in connection with asset purchase	600	1	599	0
Issuance of common stock upon exercise of stock options and warrants (in shares)		161,214
Issuance of common stock upon exercise of stock options and warrants	122	2	120	0
Issuance of common stock for services (in shares)		20,000
Issuance of common stock for services	74	0	74	0
Value of share-based arrangements (in shares)		0
Value of share-based arrangements	60	0	60	0
Net Income (Loss)	12,801	0	0	12,801
Ending balance at Dec. 31, 2012	32,696	241	43,722	(11,267)
Ending balance (in shares) at Dec. 31, 2012		24,124,625
Issuance of common stock upon exercise of stock options (in shares)		945,761
Issuance of common stock upon exercise of stock options	1,110	10	1,100	0
Value of share-based arrangements (in shares)		0
Value of share-based arrangements	122	0	122	0
Net Income (Loss)	(5,842)	0	0	(5,842)
Ending balance at Dec. 31, 2013	$ 28,086	$ 251	$ 44,944	$ (17,109)
Ending balance (in shares) at Dec. 31, 2013		25,070,386