Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net loss (Numerator):
Net loss, basic and diluted	$ (3,973)	$ (9,247)
Shares (Denominator):
Weighted average common shares outstanding	43,264	42,929
Shares used in basic computation	43,264	42,929
Common shares issuable upon exercise of stock options (treasury stock method)	0	0
Shares used in diluted computation	43,264	42,929
Net loss per share:
Basic	$ (0.09)	$ (0.22)
Diluted	$ (0.09)	$ (0.22)