Net Income (Loss) Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Computation of Basic and diluted earnings (loss) per share
Net income (loss)	$ 551	$ (293)	$ 1,154	$ (1,186)
Basic weighted average shares outstanding	44,954	42,857	44,827	42,299
Effect of potentially dilutive securities	2,696		2,674
Diluted weighted average shares outstanding	47,650	42,857	47,501	42,299
Basic EPS	$ 0.01	$ (0.01)	$ 0.03	$ (0.03)
Diluted EPS	$ 0.01	$ (0.01)	$ 0.02	$ (0.03)