CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Allowance for doubtful accounts (in dollars)	$ 207	$ 336
Interest rate on convertible notes, current portion	5.45%	5.45%
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	37,500,000	37,500,000
Common stock, shares issued	30,633,302	23,527,814
Common stock, shares outstanding	30,612,508	23,507,020
Common shares held in Treasury Stock	20,794	20,794