Per Share Data (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Numerator:
Net (loss) income attributable to common stockholders	$ (1,407)	$ 80
Denominator:
Weighted average common shares - basic	59,745	59,252
Effect of dilutive securities:
Weighted average common shares - diluted	59,745	62,552
Earnings per share:
Basic	$ (0.02)	$ 0.00
Diluted	$ (0.02)	$ 0.00
Series C convertible preferred stock [Member]
Effect of dilutive securities:
Series C convertible preferred stock		3,300
Stock Option [Member]
Effect of dilutive securities:
Stock options
Warrants [Member]
Effect of dilutive securities:
Warrants