CONDENSED CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Allowance for doubtful accounts (in dollars)	$ 186	$ 186
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	47,500,000	47,500,000
Common stock, shares issued	37,570,132	36,107,763
Common stock, shares outstanding	37,549,338	36,086,969
Common shares held in Treasury Stock	20,794	20,794