Net Loss Per Common Share (Tables)

9 Months Ended

Sep. 30, 2013

Net Loss Per Common Share

Schedule of net loss attributable to common shareholders and share data used in the basic and diluted earnings per share computations using the two class method

	Quarter Ended September 30,						Nine Months Ended September 30,
(Amounts in thousands except per share amounts)	2012			2013			2012			2013
Numerator:
Net loss	$	(6,034	)	$	(2,273	)	$	(22,824	)	$	(12,706	)
Less: earnings attributable to convertible preferred stock	1,218			1,368			2,738			3,945
Numerator of basic and diluted EPS	$	(7,252	)	$	(3,641	)	$	(25,562	)	$	(16,651	)
Denominator:
Denominator for basic and diluted EPS: weighted-average common shares outstanding	43,336			60,847			40,331			50,517
Net loss per share attributable to common shareholders (basic and diluted)	$	(0.17	)	$	(0.06	)	$	(0.63	)	$	(0.33	)