Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net loss (Numerator):
Net loss, basic and diluted	$ (827)	$ (1,881)	$ (10,074)	$ (4,449)
Shares (Denominator):
Weighted average common shares outstanding	43,000	42,560	42,965	42,442
Shares used in basic computation	43,000	42,560	42,965	42,442
Common shares issuable upon exercise of stock options (treasury stock method)	0	0	0	0
Shares used in diluted computation	43,000	42,560	42,965	42,442
Net loss per share:
Basic	$ (0.02)	$ (0.04)	$ (0.23)	$ (0.10)
Diluted	$ (0.02)	$ (0.04)	$ (0.23)	$ (0.10)