Per Share Data (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Numerator:
Net income (loss) attributable to common stockholders	$ 1,037	$ (2,550)	$ 2,724	$ (6,479)
Add: Impact of assumed conversions Interest on convertible debts	233		696
Net income (loss) attributable to common stockholders after assumed conversions	$ 1,270	$ (2,550)	$ 3,420	$ (6,479)
Denominator:
Weighted average common shares-basic	59,252	58,379	59,252	56,283
Convertible debts	20,766		20,712
Weighted average common shares-diluted	90,524	58,379	90,034	56,283
Earnings per share:
Basic	$ 0.02	$ (0.04)	$ 0.05	$ (0.12)
Diluted	$ 0.01		$ 0.04
Series C convertible preferred stock [Member]
Denominator:
Effect of dilutive securities	3,300		3,300
Series D convertible preferred stock [Member]
Denominator:
Effect of dilutive securities	7,206		6,770
Stock Options [Member]
Denominator:
Effect of dilutive securities, warrants and options
Warrants [Member]
Denominator:
Effect of dilutive securities, warrants and options