Stock Option and Restricted Stock Activity (Detail) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Shares
Outstanding, beginning of period	2,228,067	1,611,267
Granted	500	781,000
Exercised	(2,500)	(2,500)
Canceled/Expired	(125,800)	(172,500)
Outstanding, end of period	2,100,267	2,217,267
Exercisable, end of period	1,393,217	1,086,967
Weighted Avg Exercise Price
Outstanding, beginning of period	$ 1.14	$ 1.54
Granted	$ 0.34	$ 0.35
Exercised	$ 0.00	$ 0.00
Canceled/Expired	$ 0.59	$ 1.18
Outstanding, end of period	$ 1.17	$ 1.15
Exercisable, end of period	$ 1.50	$ 1.75