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Net Loss Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net Loss Per Share Details
Net loss available for common shareholders - basic and diluted	$ (3,962)us-gaap_NetIncomeLoss	$ (8,018)us-gaap_NetIncomeLoss
Weighted-average shares outstanding - basic and diluted	44,963	34,842
Net loss per share - basic and diluted	$ (0.09)	$ (0.23)

The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.